The large hadron collider is the worlds biggest particle accelerator, what will it find? 99 LHC 2010-09-02T20:58:07 Science Guy barry.david.adams@gmail.com Physics Forums 2010-09-02T20:33:00

Ok so Im given a rigid bar, with length L. There is a point P right at the bottom of the bar which is moved at a constant speed V along the floor. The bar rests on a step of height L/2. I have to...

d06bbf95caca548836fec5e3a1464f0a Physics Forums 2010-09-02T20:23:29

Please read this page: http://home.howstuffworks.com/home-thermostat3.htm And now tell me, or better draw, how is the circuitry connected when the heat is turned on, following those pictures. It...

43847e279b3d1e55c5a4c3768a3ccb5b symmetry breaking 2010-09-02T19:28:27

For years, the Britney Spears Guide to Semiconductor Physics has been floating around the Web intriguing, amusing, troubling, or infuriating different people. Doing one better, pop star Lady Gaga is now immortalized in the name of a published physics paper.

acd0941051738a80ab09f3f4b2a97777 Physics Forums 2010-09-02T19:00:08

*1. The problem statement, all variables and given/known data* My professor has provided me with an equation, and my task is to write a conservation of energy problem whose solution would produce...

d995342bc42b0be0e6be0c12e5cc8847 symmetry breaking 2010-09-01T17:12:29

As of today you can see and download the latest print issue of symmetry. This issue looks at many of the varied uses of accelerators in society. Although accelerators were typically created for basic physics research, they are key components of many medical and industrial applications now.

0acf17532f4dc24b3738232d82bbcbc7 physicsworld.com: all content 2010-09-01T12:06:29

Extended run could find first evidence of the Higgs boson

94749040613fdb286f30e7861c611977 physicsworld.com: all content 2010-09-01T12:00:20

Rasmus Benestad looks at the link between computer models, politics and global warming

ea0a728ba0a44fb6d2a695aba7826cb6 symmetry breaking 2010-08-30T23:25:04

Students from 17 African countries came together for the rare opportunity to learn about particle physics this month. Some African students have earned advanced science degrees but are looking for the specialized training in particle physics and its associated applications not usually offered on their own continent. The first African School of Fundamental Physics and its Applications in Stellenbosch, South Africa, provided that training and financially supported some African students.

2a120b0710b89284cd0f8b9b0f95a2c1 supersymmetry «WordPress.com Tag Feed 2010-08-28T16:55:55

This post is now also on The Guardian. Back in Geneva after the SUSY meeting in Bonn and a day in th

d776bb56aba7f9de4adf4f4c495de57c tevatron «WordPress.com Tag Feed 2010-08-27T15:26:30

“Beyond the Standard Model” or BSM has become this years trending phrase in particle phy

539d7f8e8b7d320a0c3aede794bd843c symmetry breaking 2010-08-27T12:53:08

In a fun Q&A piece, the HHMI Bulletin asked four researchers "What 'For Dummies' book are you most qualified to write?"

7d67393829d013996cbfbbe3b64363f8 higgs-boson «WordPress.com Tag Feed 2010-08-27T12:17:19

Yes, it’s fake. Brilliant however A would-be saboteur arrested today at the Large Hadron Colli

3d33aadf9c2f3d49b25bd4882c162ca7 Cosmic Variance 2010-08-26T23:01:31

Speaking of video goodness, we’d be remiss not to remind everyone that Sunday is the premiere of Phil Plait’s new mini-series on Discovery, Bad Universe. It will be a lot like Armageddon, with Phil instead of Bruce Willis in the role of the balding hero figure. And science instead of complete nonsense. [...]

59b1ce70a0b502d13e24746f8bb33402 symmetry breaking 2010-08-26T18:54:11

After a lengthy process examining a complaint by Water Wagner and others about the risks of switching on the LHC, an appellate judge has dismissed the lawsuit finding that Wagner had no standing in the case. According to the decision, Wagner failed to show a "credible threat of harm", and that the US government does not control the operation of the LHC and therefore is not the correct party to bring action against.

617e27db868a87d17dc32d499c0f7360 symmetry breaking 2010-08-26T15:41:54

Members of the CERN choir sing an ode the Higgs boson to the tune of "The Hippopotamus Song" by Flanders and Swann.

e570194ea1d9c0d12cf114e625b13d3b symmetry breaking 2010-08-24T23:32:51

A contest inspires breakthroughs in clear communication.

4640bc3cace763c75ee096b2cf38936a US LHC Blog 2010-08-24T03:57:17

, Follow us : on US LHC Blogs Home Sorry , can you repeat that Posted by Ken Bloom on 23 Aug 2010 at 09:57 pm This post is meant to have a positive tone . . Really The LHC experiments all rely heavily on some form of teleconferencing to get their work done . As experimental collaborators number in the thousands , we can’t get by without conversing with each other . And with collaborators all over the world , we can’t expect people to physically appear at every single meeting . This could work fifteen or twenty years ago , when people typically participated in experiments on the regional or national scale . I know a whole fleet of professors who used to drive a car or take a plane to Fermilab once every two weeks , or even every week , so that they could be in the room for some particular

supersymmetry «WordPress.com Tag Feed 2010-08-21T07:32:43

This post is also on The Guardian. Next week I am giving a talk a the SUSY 2010 conference in Bonn.

fcfd1749bc6c912c8d8e5e5fc9a4f690 symmetry breaking 2010-08-20T22:18:06

It was a good week for mathematical physics. Three of the four winners of the 2010 Fields Medal, considered the Nobel Prize for mathematics, were honored for studies in the field.

e327d4d881055a52f86e57064122b389 US LHC Blog 2010-08-20T19:04:09

Follow us : on US LHC Blogs Home Off to Geneva Posted by Christine Nattrass on 20 Aug 2010 at 01:04 pm I’m off to Geneva for a couple of weeks . While I’m there I’ll work on the test beam for the ALICE electromagnetic calorimeter . I’ll tell you more about that in the next posts . But I thought I’d share with you the contents of my long trip survival : kit A travel pillow , a bandana which serves both as an eye mask and a lazy hair style an outlet adapter , a netbook and mini-optical mouse , ear plugs , an mp3 player with a 30 hour battery , a hair brush and extra hair bands , two change purses one for Euros , the other for Swiss Francs and little mini-toothbrushes with toothpaste already on them . I don’t deal with sleep deprivation very well so these flights are never very fun but

US LHC Blog 2010-08-20T18:11:10

Follow us : on US LHC Blogs Home Month-long Vacations in France Posted by Mike Anderson on 20 Aug 2010 at 12:11 pm Workers in France are guaranteed at least 5 weeks paid vacation time each . year 1 2 Many people take that time off in the month of August . I don’t know how August became the vacation month , but that’s the way it is . Hours for many stores become even more limited or simply close for the month Even in my hometown of Madison , WI there is a French bakery owned by a french family and they close up shop for most of . August The disappearing of French workers also happens at CERN professors , scientists , etc , many of them are gone . That leaves the rest of us with the chance to either get ahead in our work , or relax and take it easy as . well Oh , and did I mention that the

Cosmic Variance 2010-08-19T19:51:15

The recent US Decadal Survey (Astro2010) contains a conundrum. As part of the report, the Decadal Survey committee identified three key “scientific objectives” on which they felt the community should focus. These were: “Cosmic Dawn: Searching for the First Stars, Galaxies, and Black Holes” “New Worlds: Seeking Nearby, Habitable Planets” “Physics of the Universe: Understanding [...]

7f4f6637fbc4a8f0d820864103daedfe US LHC Blog 2010-08-19T15:26:13

Follow us : on US LHC Blogs Home A Physicist’s Dinner in Paris Posted by Seth Zenz on 19 Aug 2010 at 09:26 am One of the nights at ICHEP , I ended up by myself and wandered around the middle of Paris a bit . At last I was hungry , and decided I wanted something easy and affordable if at all possible . The best solution for this , in Paris , is one of the touristy restaurants . So what I ate is below . Some aspects of it are typically French , but there is nothing unfamiliar to an American about it except the concept of an omelet at . dinner You can also see what I was reading : a book of papers on the multiverse hypothesis” adapted from some conference lectures . Among some theoretical physicists trying to build a fundamental theory of life , the universe , and everything , there is

symmetry breaking 2010-08-19T11:44:33

At the 38th annual SLAC Summer Institute, more than 150 graduate students, postdocs and researchers got an in-depth look at "Neutrinos: Nature's Mysterious Messengers" -- and built social bonds that will sustain them throughout their careers.

1ce340621475f5de5c7ee66b4260a1b1 Cosmic Variance 2010-08-18T18:14:52

The big news this week in astrophysics is not the discovery of a new planet. Nor is it the first glimpse of a galaxy on the other side of the Universe. It’s much more important: the arrival of the latest Decadal Report. It all started over a year ago, and fellow blogger Julianne has been [...]

10c36cf3fc9d7f2584851d494e8d9396 US LHC Blog 2010-08-15T02:57:59

, Follow us : on US LHC Blogs Home A TeV , measured in chocolate and coffee Posted by Christine Nattrass on 14 Aug 2010 at 08:57 pm We toss around the term TeV” a teraelectron volt , 10 12 electron volts eV But how much energy is it really An electron volt is the energy an electron gains when it is accelerated through a potential difference of one volt . An electron volt is defined as a unit of energy . Various prefixes are defined here Let’s put this in terms we can all understand . A Lindt 70 cocoa chocolate bar has 194 Calories To convert this to electron : volts 194 Calories 1000 calories Calorie 4.2J calorie 1.6 10 19 J eV 5 10 24 eV Note that the dietary unit , a Calorie , is 1000 calories , the amount of energy needed to raise the temperature of one mL of water by one degree Celsius

US LHC Blog 2010-08-09T23:38:07

Follow us : on US LHC Blogs Home First pb^-1, courtesy of the LHC Posted by Regina on 09 Aug 2010 at 05:38 pm Over the weekend the LHC was able to deliver our first pb^-1 of data Milestones keep rolling on by and the data keeps rolling in . This is a big first step in getting what will hopefully be lots and lots of data . I’ve included a link to the ATLAS luminosity plot for your viewing pleasure . CMS has one too but I’m on ATLAS To anyone who isn’t a particle physicist an inverse picobarn pb^-1 is a pretty bizarre unit . I’ll start out with the base unit : the barn b It’s a measurement of area , proportional to m^2 or cm^2. The barn unit comes from when nuclear physics was in its infancy and refers to a uranium nucleus which is as big as a barn 1 barn 10^-24 cm^2 I still think physicists

higgs-boson «WordPress.com Tag Feed 2010-08-09T23:19:48

Today I was very surprised to discover that I got a video answer on YouTube by the renowned physicis

c2c048214a574e6d9dd98e680ea4a9ed US LHC Blog 2010-08-06T21:20:39

Welcome to the C ryogenic D ark M atter S earch Homepage CDMS in the News The Collaboration Collaborator Websites : Brown . U Caltech CWRU FNAL MIT SCU Southern Methodist University SUF Stanford Syracuse Texas A M UCBerkeley UCSB U.Florida U.Minnesota Zurich CDMS Publications and Dissertations CDMS Internal Page collaboration only CDMS Management Reports restricted The CDMSII Experiment Scientific , with explanations of the dark matter problem , WIMPs and our detectors Science article 2 12 2010 Abstract Printed report(pdf Supplementary Online Material pdf Latest results of CDMS-II , December 17, 2009 Summary of the results can be found here : pdf Results from the Final Exposure of the CDMS II Experiment arXiv pdf Announcement talks 12 December 2009 Jodi Cooley SLAC pdf Berkeley copy of the

US LHC Blog 2010-08-04T02:40:42

Follow us : on US LHC Blogs Home Tour a particle collider Posted by Christine Nattrass on 03 Aug 2010 at 08:33 pm This weekend I’ll be headed up to Long Island , where I’ll be one of the volunteers for the Brookhaven National Laboratory Summer Sundays public tours of the Relativistic Heavy Ion Collider . It’s free and no reservations are required . Details are available here I’d recommend it to anyone interested in particle . accelerators The Relativistic Heavy Ion Collider RHIC is a little over a kilometer in diameter . By comparison , the LHC is about 8.5 kilometers in diameter . The top center of mass energy at RHIC is 500 GeV for proton-proton collisions and 200 GeV for heavy ion collisions , about 1 28th of the top LHC energies . While the LHC can collide protons at the top energy in

US LHC Blog 2010-08-04T02:40:40

, Community Home Contact Us Visit Us Brookhaven Lab Home Search Summer Sundays July 11 August 8, 2010 This summer , Brookhaven National Laboratory invites you to attend our Summer Sundays experience to explore world-class facilities , see a different science show each week . FREE No reservations needed . Gates open 10 a.m . 3 p.m . Visitors age 16 and over must bring a photo ID . Handicapped accessible 1-1 2 miles north of LIE Exit 68 Call 631 344-2651 For several weeks this summer , the Laboratory welcomes members of the public to its site . We plan days that include visits to our facilities , opportunities to speak with our researchers , special activities for adults and children , and much more and it’s all free Check back in May for more . details July 11 The Center for Functional

US LHC Blog 2010-08-04T02:40:39

, Relativistic Heavy Ion Collider From Wikipedia , the free encyclopedia Jump to : navigation search Hadron colliders The Relativistic Heavy Ion Collider at Brookhaven National Laboratory Note especially the second , independent ring behind the blue striped one . Barely visible and between the white and red pipes on the left wall , is the orange Crash Cord which should be used to stop the beam in the case a person is still left in the . tunnel Intersecting Storage Rings CERN 1971–1984 Super Proton Synchrotron CERN 1981–1984 ISABELLE BNL cancelled in 1983 Tevatron Fermilab 1987–present Relativistic Heavy Ion Collider BNL 2000–present Superconducting Super Collider Cancelled in 1993 Large Hadron Collider CERN 2009–present Super Large Hadron Collider Proposed , CERN 2019– Very Large Hadron

US LHC Blog 2010-08-04T02:40:38

: Home Physics Experiment Collaboration Publications News Events Mailing lists Computing The future Sitemap BNL RHIC Brahms Phenix Phobos pp2pp www.energy.gov star focus : Baryon Number Fluctuations to look for the QCD Critical Point Highlights from the STAR papers Higher Moments of Net-proton Multiplicity Distributions at RHIC Published in Physical Review Letters 105 2010 022302 A recent paper from the STAR Collaboration published in Physical Review Letters proposes using the higher moments of net-proton multiplicity distributions produced in high energy heavy-ion collisions as an observable for locating the QCD Critical Point . It has been shown that a careful choice of the products of the moments of the net-proton distributions form observables that can be related to the ratios of

US LHC Blog 2010-08-04T02:40:38

main intro speakers contacts results internal search A Physics Experiment at RHIC Privacy and Security Notice Report problems to H . Kehayias

US LHC Blog 2010-08-04T02:40:38

, , Preferences Get the button Share Bookmark Tour a particle collider : URL Email Facebook Digg MySpace Windows Live Favorites Bebo Google Reader Evernote Strands Google Gmail AOL Mail Expression SmakNews Yahoo Messenger Blogger Post Mixx Shoutwire Windows Live Spaces Instapaper Netvouz BibSonomy StartAid Meneame Technotizie FriendFeed Squidoo Faves Segnalo Slashdot Jamespot LinkaGoGo Hugg Propeller Current Yample Simpy Ask.com MyStuff Wists MyLinkVault DZone Sphere Symbaloo Feeds Folkd Amazon Wish List Email program Twitter Google Bookmarks Reddit StumbleUpon Mister-Wong Orkut Netvibes Share Posterous Yahoo Mail MSDN Arto Plurk Identi.ca TypePad Post Netlog CiteULike Hemidemi PhoneFavs Wink BlogMarks Kledy Yoolink NewsVine Plaxo Pulse Protopage Bookmarks YiGG Pusha Fark Imera Brazil

US LHC Blog 2010-08-04T02:40:36

Follow us : on US LHC Blogs Home Busman’s or miner’s holiday Posted by Ken Bloom on 03 Aug 2010 at 03:16 pm Shh don’t tell anyone that I’m online I am writing from a secure , undisclosed location in northern Minnesota , where I am taking a vacation between the end of the ICHEP rush and the start of the fall semester . But longtime readers will remember my penchant for physics tourism and it turns out that I am within an hour’s drive of the Soudan Underground Mine State Park So I had to go visit The Soudan mine is the oldest iron mine in Minnesota , with amazingly pure ore deposits . But by the 1960’s , it wasn’t cost-effective to operate , and it was turned into an historic park . In the late 1970’s , particle physicists at the University of Minnesota , led by Marvin Marshak , realized

US LHC Blog 2010-08-04T02:40:34

NuMI-MINOS Home MINOS for the Public MINOS for Scientists Fermilab at Work FNAL PhoneBook NuMI Beam at Work MINOS at Work MINOS Contacts MINOS Facility Site MINOS Site Index MINOS for the Public Welcome to NuMI-MINOS for the Public MINOS , or Main Injector Neutrino Oscillation Search , is an experiment at Fermilab designed to study the phenomena known as neutrino oscillations . It uses a beam of neutrino particles produced by the NuMI beamline facility Neutrinos at the Main Injector . The beam of neutrinos is sent through the two MINOS detectors , one at Fermilab and one in the Soudan Mine in northern . Minnesota For basic background , go through the About Neutrinos Tour learn about neutrinos , their history , the experiments which have studied them , and how neutrinos fit into the

US LHC Blog 2010-08-03T18:04:13

: logbook : solar neutrinos Logbook courtesy of Ray Davis Click on image for larger version . Deep in the Homestake Gold Mine in Lead , South Dakota , during the early 1970s , Ray Davis monitored a 100,000-gallon tank of perchloroethylene , a chlorine-rich dry-cleaning chemical . The experiment was designed to detect solar neutrinos , using the theory that an incoming neutrino would produce radioactive argon by interacting with a chlorine nucleus . Davis was successful , but detected just one-third of the expected number . This solar neutrino puzzle inspired a series of experiments that eventually confirmed neutrinos change flavors . For his work , Davis won the 2002 Nobel Prize in Physics . This page from his notebook captures a piece of that work . Davis discusses the tank cars

US LHC Blog 2010-08-03T18:04:13

, Homestake experiment From Wikipedia , the free encyclopedia Redirected from Homestake Experiment Jump to : navigation search The Homestake experiment sometimes referred to as the Davis experiment was an experiment headed by astrophysicists Raymond Davis , . Jr and John N . Bahcall in the late 1960s . Its purpose was to collect and count neutrinos emitted by nuclear fusion taking place in the Sun Bahcall did the theoretical calculations and Davis designed the experiment . After Bahcall calculated the rate at which the detector should capture neutrinos , Davis's experiment turned up only one third of this figure . The experiment was the first to successfully detect and count solar neutrinos , and the discrepancy in results essentially created the solar neutrino problem The experiment

US LHC Blog 2010-08-03T18:04:08

: Follow us : on US LHC Blogs Home The W boson : mixing things up Posted by Flip Tanedo on 02 Jul 2010 at 03:03 pm For those of you who have been following our foray into the particle content of the Standard Model , this is where thing become exciting . We now introduce the W boson and present a nearly-complete picture of what we know about . leptons We’re picking up right where we left off , so if you need a refresher , please refer to previous installments where we introduce Feynman rules and several particles : Part 1 Part 2 Part 3 Part 4 Part 5 The W is actually two particles : one with positive charge and one with negative charge . This is similar to every electron having a positron anti-partner . Here’s the Particle Zoo s depiction of the W boson Together with the Z boson , the W s

US LHC Blog 2010-08-03T18:04:05

: : skip to main skip to sidebar RESONAANCES Particle theory blog no longer from CERN Saturday , 24 July 2010 D0 says : neither dead nor alive This year CP violation in the Bs meson system has made the news , including BBC News and American Gardener . The D0 measurement of the same-sign dimuon asymmetry in B decays got by far the largest publicity . Recall that Tevatron's D0 reported 1 percent asymmetry at the 3.1 sigma confidence level , whereas the standard model predicts a much smaller value . The results suggests a new source of CP violation , perhaps new heavy particles that we could later discover at the . LHC The dimuon asymmetry is not the only observable sensitive to CP violation in the Bs system . Another accessible observable is the CP violating phase in time-dependent Bs decays

US LHC Blog 2010-08-03T18:04:05

: Pages Blog About this blog Featured bloggers Blogging ICHEP 2010 A collective forum about the 35th edition of the International Conference on High Energy Physics Paris , July 2010 Wednesday , July 28, 2010 Trouble with Flavor Flavor physics gives me a headache . Unfortunately , this sub-field of particle physics is where new particles and interactions are very likely to show up , so it's essential to follow all hints from latest observations . Yesterday at ICHEP Gino Isidori gave a nice theoretical summary of where we . stand Overall , the standard model frustratingly well explains the multitude of observed transitions between quarks and leptons of different generations . If we extend the standard model with generic non-renormalizable 4-fermion operators , their coefficients are

US LHC Blog 2010-08-03T18:04:04

arXiv.org hep-ph arXiv:0706.1216 Search or Article-id Help Advanced search All papers Titles Authors Abstracts Full text Help pages Full-text : links : Download PDF PostScript Other formats Current browse : context hep-ph next new recent 0706 Change to browse : by astro-ph hep-ex References Citations SLAC-SPIRES HEP refers to cited by NASA ADS Bookmark what is this High Energy Physics Phenomenology : Title Do charged leptons oscillate : Authors Evgeny Akhmedov Submitted on 8 Jun 2007 v1 last revised 27 Jul 2007 this version , v3 : Abstract The question of whether charged leptons oscillate is discussed in detail , with a special emphasis on the coherence properties of the charged lepton states created via weak interactions . This analysis allows one to clarify also an important issue of the

US LHC Blog 2010-08-02T20:44:47

Follow us : on US LHC Blogs Home End of Another Great 25×25 run Posted by Seth Zenz on 31 Jul 2010 at 05:01 am I’m on pixel shift in the ATLAS control room at the moment . We’ve had a very successful run , with stable LHC beams for about the past 12 hours . The luminosity of the detector is another step forward , because the past two nights have seen more bunches per beam than ever before The lifetime of the beam is also excellent . You can see below that the luminosity of the beam has only been decaying very slowly for the past 9 or 10 . hours The LHC reports that , after the dump , they will fill the LHC for another physics run . I’m actually not sure why they’re dumping so soon , given that it will likely take a few hours to dump and refill , and the beam still has a lot of oomph in it

US LHC Blog 2010-07-31T18:03:59

: : : Skip past navigation On a mobile phone Check out m.twitter.com Skip to navigation Skip to sign in form Login Join Twitter 1 2 LHC 10:38:44 : Plan : programmed dump around noon then refill for physics filling scheme : Mu|ti,25bi16,16,16 same filled buckets as f about 9 hours ago via API lhcstatus Andrew Elwell Footer 2010 Twitter About Us Contact Blog Status Goodies API Business Help Jobs Terms Privacy

US LHC Blog 2010-07-31T18:03:59

Archives Contact us Sign Up Staff Association CERN Home english français Issue No . 31-33 2010 Monday 2 August 2010 News Articles General Information Staff Association Printable colour version now available for download Physics buzz in Paris Postcards from Paris CERN , one of the proudest flagships of European cooperation Preparing for faster filling The proton as seen by TOTEM LHCf completes its first run ALPHA freezes antiprotons The importance of the Summer Student Programme 19 years old and a neutrino expert The invention that is shaping Linac4 Transfer your ideas to society CAS Accelerator Physics RF for Accelerators in Denmark A borderless Library Subscribe by RSS Preparing for faster filling Following the programmed technical stop last week , operators focussed on preparing the

US LHC Blog 2010-07-31T11:01:59

Follow us : on US LHC Blogs Home End of Another Great 25×25 run Posted by Seth Zenz on 31 Jul 2010 at 05:01 am I’m on pixel shift in the ATLAS control room at the moment . We’ve had a very successful run , with stable LHC beams for about the past 12 hours . The luminosity of the detector is another step forward , because the past two nights have seen more bunches per beam than ever before The lifetime of the beam is also excellent . You can see below that the luminosity of the beam has only been decaying very slowly for the past 9 or 10 . hours The LHC reports that , after the dump , they will fill the LHC for another physics run . I’m actually not sure why they’re dumping so soon , given that it will likely take a few hours to dump and refill , and the beam still has a lot of oomph in it

supersymmetry «WordPress.com Tag Feed 2010-07-30T20:30:16

I have uploaded a paper on arxiv with a new theorem of mine. I have already exposed the idea in this

87ecde4090d9ea96ee0e2a61cee3cb04 tevatron «WordPress.com Tag Feed 2010-07-30T10:56:32

The first time I went to a lecture on supersymmetry the auditorium was so packed that many people co

6c6736e1db93dce130315f2a47a6f6ca US LHC Blog 2010-07-30T04:30:38

: Follow us : on US LHC Blogs Home Right now : Trying to collide 25×25 bunches Posted by Mike Anderson on 29 Jul 2010 at 02:20 pm As we speak there are 25 bunches of protons in both proton beams in the LHC . See all those steps in the graph red and blue lines Each little step is one bunch being added , and each big” step is 4 bunches being added . So if you count the steps yourself you should get a total bunch count of 25 in each beam . The red and blue lines correspond to the left-hand y-axis showing . Intensity” The energy of the proton beams is in black and goes with the right-hand y-axis , Energy GeV As I write this the protons are around 500-some GeV and being ramped up to 3500 GeV which should take about half an . hour Once both beams are at 3500 GeV and they declare stable beams ,

US LHC Blog 2010-07-30T04:30:37

, , : Preferences Get the button Share Bookmark Right now : Trying to collide 25×25 bunches : URL Email Facebook Digg MySpace Windows Live Favorites Bebo Google Reader Evernote Strands Google Gmail AOL Mail Expression SmakNews Yahoo Messenger Blogger Post Mixx Shoutwire Windows Live Spaces Instapaper Netvouz BibSonomy StartAid Meneame Technotizie FriendFeed Squidoo Faves Segnalo Slashdot Jamespot LinkaGoGo Hugg Propeller Current Yample Simpy Ask.com MyStuff Wists MyLinkVault DZone Sphere Symbaloo Feeds Folkd Amazon Wish List Email program Twitter Google Bookmarks Reddit StumbleUpon Mister-Wong Orkut Netvibes Share Posterous Yahoo Mail MSDN Arto Plurk Identi.ca TypePad Post Netlog CiteULike Hemidemi PhoneFavs Wink BlogMarks Kledy Yoolink NewsVine Plaxo Pulse Protopage Bookmarks YiGG Pusha

higgs-boson «WordPress.com Tag Feed 2010-07-28T19:00:25

The God Particle, or the Higgs Boson as its known in the Physics world, is coming closer and closer

b04f70796adbb574542880429d89d5e0 tevatron «WordPress.com Tag Feed 2010-07-28T08:19:35

Particle Physicists hunting for the ever elusive Higgs Boson reported their latest findings at the I

40e18f089377f447afce89e276ca22aa higgs-boson «WordPress.com Tag Feed 2010-07-28T05:12:17

Recipe for a Universe: excerpt from website – CERN-RecipeforaUniverse :> http://public.web.

ff8686ac720989f61a4996906b69c693 tevatron «WordPress.com Tag Feed 2010-07-28T00:06:53

Image by Getty Images via @daylife and the really important proton collisions haven’t happened

32abb2949df2fbc9b369c708800f0ce1 supersymmetry «WordPress.com Tag Feed 2010-07-27T17:44:40

At the International Conference on High Energy Physics someone said something about Supersymmetry. T

57e9f7c68954bc7ef76a8975b0f91b34 US LHC Blog 2010-07-27T17:20:54

Follow us : on US LHC Blogs Home ICHEP’s Biggest Day Posted by Seth Zenz on 27 Jul 2010 at 04:12 am Yesterday was , I suppose , the biggest and most formal day here at the 35th International Conference of High Energy Physics . I wore my suit , and took some ribbing from some of my colleagues for dressing up so much , but I’ve worn it for far less excuse and am not sorry in the slightest . It’s not every day , or even every ICHEP , that one hears an address from the President of the French Republic Mr . Sarkozy’s speech was great to hear . He is a very emotive , enthusiastic , and informal speaker , which made him relatively easy to understand for those in the audience like me with limited French . He didn’t claim to know the details of our work , and seemed to think we’re all a little

US LHC Blog 2010-07-27T17:20:49

: : . . Pages Blog About this blog Featured bloggers Blogging ICHEP 2010 A collective forum about the 35th edition of the International Conference on High Energy Physics Paris , July 2010 Tuesday , July 27, 2010 Day 4 : the Higgs is not there . . Yet Now we know , the Higgs boson did not show up at Tevatron . Yet But we also know that , if it exists , we would not find it in the 158-175 GeV mass range . Th e saga of the Tevatron Higgs talks finally came to an end , certainly matching the expectation , at least for what concerns the show part . Well , as for the scientific part , after all the preliminary steps of the last days nobody was really any hint of signal anymore . We mortals might not be able to make fancy statistical combinations by eye , but it was still not too complicated to

US LHC Blog 2010-07-27T17:20:48

Follow us : on US LHC Blogs Home ICHEP’s Biggest Day Posted by Seth Zenz on 27 Jul 2010 at 04:12 am Yesterday was , I suppose , the biggest and most formal day here at the 35th International Conference of High Energy Physics . I wore my suit , and took some ribbing from some of my colleagues for dressing up so much , but I’ve worn it for far less excuse and am not sorry in the slightest . It’s not every day , or even every ICHEP , that one hears an address from the President of the French Republic Mr . Sarkozy’s speech was great to hear . He is a very emotive , enthusiastic , and informal speaker , which made him relatively easy to understand for those in the audience like me with limited French . He didn’t claim to know the details of our work , and seemed to think we’re all a little

tevatron «WordPress.com Tag Feed 2010-07-26T19:41:44

Otherwise known as the “God Particle”, the theoretical Higgs Boson is the elemental part

371f1127e76e9dd431d1bacd914ddd58 tevatron «WordPress.com Tag Feed 2010-07-26T15:56:42

The combination of the CDF and DZero results previously described individually are now available. Th

f369d5173a2bb79ff62e057d9774af6f supersymmetry «WordPress.com Tag Feed 2010-07-26T15:35:20

The race is on, or continuing between the LHC and the Tevatron.  Regular readers know of my passion

95d3f46424a77ba5e67d868c89929a41 Not Even Wrong 2010-07-26T15:22:26

Just got back from vacation this morning. Luckily I managed to be away for the blogosphere-fueled Higgs rumors, returned just in time to catch the released results which appeared in a Fermilab press release minutes ago. The ICHEP talk in Paris announcing these results will start in about half an hour, slides should appear here. [...]

4c043cd1a44d74688a726abfcb4d0c34 higgs-boson «WordPress.com Tag Feed 2010-07-26T11:28:16

one black mass of jigs and jimjams... Based on your own experience, complete the following sentence

dfb382fc47b5f4fa3f4e500bc0537872 dorigo's blog 2010-07-26T01:41:14

Ø Ø Ø FAQ Register Now Sign In Full Site Physical Sciences Earth Sciences Life Sciences Medicine Social Sciences Culture Newsletter HOME PHYSICAL SCIENCES PHYSICS SPACE CHEMISTRY APPLIED PHYSICS AEROSPACE OPTICS EARTH SCIENCES ENVIRONMENT ENERGY ATMOSPHERIC PALEONTOLOGY GEOLOGY OCEANOGRAPHY LIFE SCIENCES GENETICS MOLECULAR BIOLOGY EVOLUTION MICROBIOLOGY ECOLOGY ZOOLOGY IMMUNOLOGY NEUROSCIENCE MEDICINE CANCER RESEARCH PUBLIC HEALTH PHARMACOLOGY CLINICAL RESEARCH AGING VISION SOCIAL SCIENCES ANTHROPOLOGY ARCHAEOLOGY PSYCHOLOGY SCIENCE EDUCATION POLICY SCIENCE HISTORY PHILOSOPHY ETHICS CULTURE TECHNOLOGY MATHEMATICS SCIENCE SOCIETY CONSERVATION RANDOM THOUGHTS HUMOR VIDEO CONTRIBUTORS Subscribe to the newsletter x Stay in touch with the scientific world Home Physical Sciences Physics A

148b5cb4a83dfa3fe1f5a308ec1fe75e dorigo's blog 2010-07-25T08:26:23

: , Ø Ø Ø FAQ Register Now Sign In Full Site Physical Sciences Earth Sciences Life Sciences Medicine Social Sciences Culture Newsletter HOME PHYSICAL SCIENCES PHYSICS SPACE CHEMISTRY APPLIED PHYSICS AEROSPACE OPTICS EARTH SCIENCES ENVIRONMENT ENERGY ATMOSPHERIC PALEONTOLOGY GEOLOGY OCEANOGRAPHY LIFE SCIENCES GENETICS MOLECULAR BIOLOGY EVOLUTION MICROBIOLOGY ECOLOGY ZOOLOGY IMMUNOLOGY NEUROSCIENCE MEDICINE CANCER RESEARCH PUBLIC HEALTH PHARMACOLOGY CLINICAL RESEARCH AGING VISION SOCIAL SCIENCES ANTHROPOLOGY ARCHAEOLOGY PSYCHOLOGY SCIENCE EDUCATION POLICY SCIENCE HISTORY PHILOSOPHY ETHICS CULTURE TECHNOLOGY MATHEMATICS SCIENCE SOCIETY CONSERVATION RANDOM THOUGHTS HUMOR VIDEO CONTRIBUTORS Subscribe to the newsletter x Stay in touch with the scientific world Home Physical Sciences Physics A

7ef3ba15f042920873acf222a1919852 higgs-boson «WordPress.com Tag Feed 2010-07-24T02:54:03

In the Guardian’s science blog, a great writeup on what’s happening at the International

d09eb45952a5a67c16ecc5bff1ea76a3 US LHC Blog 2010-07-23T20:15:06

Europe reaches the top , err , the top reaches Europe July 23, 2010 5:44 am It might be a long way to the top , but the LHC experiments are already half-way there . Today at the International Conference on High Energy Physics in Paris , the CMS and ATLAS experiments presented their first top quark candidates . These candidates are collisions that have all the hallmarks of having produced top quarks , but the experiments don’t yet have enough data to be 100 sure that the events created top quarks that decayed into other particles rather than another type of . event The signal is starting to rise from the background , 8221 notes Tim Christiansen from . CMS The top quark , the heaviest particle in the Standard Model , was discovered at Fermilab’s Tevatron in 1995. The CDF and DZero

US LHC Blog 2010-07-23T20:15:05

Thursday , Oct . 15, 2009 Subscribe Contact Us Archive Classifieds Guidelines Help Search Calendar Have a safe day Thursday , Oct . 15 2:30 . p.m Theoretical Physics Seminar Curia II Speaker : Tanju Gleisberg , SLAC National Accelerator Laboratory Title : Multiparton Production at NLO with BlackHat and Sherpa 3:30 . p.m DIRECTOR'S COFFEE BREAK 2nd Flr X-Over 4 . p.m Accelerator Physics and Technology Seminar One West Speaker : Yipeng Sun , CERN Title : Beam Dynamics Aspects of Crab Cavities in the Large Hadron Collider Friday , Oct . 16 3:30 . p.m DIRECTOR'S COFFEE BREAK 2nd Flr X-Over THERE WILL BE NO JOINT EXPERIMENTAL-THEORETICAL PHYSICS SEMINAR THIS WEEK 8 . p.m Fermilab Lecture Series Ramsey Auditorium , 7 Dr . Domenico Meli , Indiana University presents : Galileo and the

US LHC Blog 2010-07-23T20:15:04

Follow us : on US LHC Blogs Home Particles and Searches Posted by Regina on 23 Jul 2010 at 09:30 am Lots of us bloggers have been talking about ICHEP which is going on this week . I’m not attending the conference , although some of the work I’ve been doing is Now I’ve been turning my attention back to my physics analysis . As of about a week ago we have 200 nb-1 now closer to 300 nb-1 of data which is about 1 50th of what I hope to get for an . analysis I briefly mentioned that I’ll be doing a search in a previous post Now I’d like to share a bit what this particle beast is . A leptoquark carries quantum numbers for both quarks and leptons . It would decay by generation such that it mixes families of quarks and leptons . So why do we think it exists In a word : . Symmetry Physicists love

US LHC Blog 2010-07-23T20:15:00

Follow us : on US LHC Blogs Home My First Day at ICHEP Posted by Seth Zenz on 23 Jul 2010 at 01:51 am There are probably many blogs where you can read summaries of the ICHEP conference or if not , there will be soon enough so I’m going to limit myself to telling you about my day . Getting my poster printed and getting it to Paris in one piece was stressful but uneventful in the end , and once I got to the conference things were easy . The poster session was the first evening , and you can see me at right standing in front of the thing , ready to explain what’s going on . I will soon post more about the measurement shown in the poster , but here is the official ATLAS conference note and here is an old summary of some of the concepts I didn’t get an overwhelming number of people asking

US LHC Blog 2010-07-23T15:30:15

Follow us : on US LHC Blogs Home Particles and Searches Posted by Regina on 23 Jul 2010 at 09:30 am Lots of us bloggers have been talking about ICHEP which is going on this week . I’m not attending the conference , although some of the work I’ve been doing is Now I’ve been turning my attention back to my physics analysis . As of about a week ago we have 200 nb-1 now closer to 300 nb-1 of data which is about 1 50th of what I hope to get for an . analysis I briefly mentioned that I’ll be doing a search in a previous post Now I’d like to share a bit what this particle beast is . A leptoquark carries quantum numbers for both quarks and leptons . It would decay by generation such that it mixes families of quarks and leptons . So why do we think it exists In a word : . Symmetry Physicists love

tevatron «WordPress.com Tag Feed 2010-07-23T14:17:51

This afternoon there will be a couple of talks corresponding to Higgs searches at CDF and DZero (The

cb7b3db606892f00d9f5748d04c9b7d1 US LHC Blog 2010-07-23T07:51:56

Follow us : on US LHC Blogs Home My First Day at ICHEP Posted by Seth Zenz on 23 Jul 2010 at 01:51 am There are probably many blogs where you can read summaries of the ICHEP conference or if not , there will be soon enough so I’m going to limit myself to telling you about my day . Getting my poster printed and getting it to Paris in one piece was stressful but uneventful in the end , and once I got to the conference things were easy . The poster session was the first evening , and you can see me at right standing in front of the thing , ready to explain what’s going on . I will soon post more about the measurement shown in the poster , but here is the official ATLAS conference note and here is an old summary of some of the concepts I didn’t get an overwhelming number of people asking

higgs-boson «WordPress.com Tag Feed 2010-07-22T23:12:51

Scientists searching for the Higgs boson or ‘god particle’ have appeared confused and em

623658420420fdc5069cc17efd0a9af1 tevatron «WordPress.com Tag Feed 2010-07-22T16:20:24

Today saw the launch of the ICHEP parallel sessions and for those of us not able to attend it meant

18779f9f12b21fd5848d5ff886169b24 Asymptotia 2010-07-22T03:47:11

Skip to content Asymptotia Proof Happy Higgs Hunting Published by Clifford on July 21, 2010 in research science science in the media and work In case you were wondering , things are moving steadily along in the search for the Higgs boson , and in the general ramping up to study entirely new frontiers of particle physics . I noticed a couple of interesting articles today that give you a nice sample . The first , by Dick Ahlstrom in the Irish Times , and is about the announced rediscovery” of the W and Z bosons at the Large Hadron Collider by a team working at the LHCb experiment . I personally think that the term rediscovery” is somewhat misleading since it makes it seem like the community forgot where they the key signatures of the unity of the electromagnetic and weak nuclear forces at

1226966c240cdddce370761d6793daab higgs-boson «WordPress.com Tag Feed 2010-07-21T19:00:34

The ‘God Particle’. Pretty catchy name. Its been in the news quite a bit lately. But wha

5430d36a21739f850e8e646b43921480 dorigo's blog 2010-07-21T10:54:38

The Atlas collaboration made public, just in time for the 2010 ICHEP conference in Paris, the projected reach of their searches for standard model Higgs bosons. This is a whole set of interesting new results which, although necessarily still based on simulations, tell us a lot about what we might see toward the end of next year at the LHC. Here I will just flash a couple of the results, because the plentiful online documentation that ATLAS provided makes it a worthless exercise on my part to just echo it here. However, maybe I can comment the most relevant plots for those of you too lazy to browse the information-thick ATLAS pages. read more

e0f0e71b07f98a8aa3035e0ab81747e6 US LHC Blog 2010-07-20T02:00:23

Follow us : on US LHC Blogs Home Almost There Posted by Seth Zenz on 19 Jul 2010 at 01:31 pm The official ATLAS conference note describing the analysis I worked on was approved on Saturday morning . My poster was finalized , approved , and printed possibly not in that order just in the past few hours . Now the only challenge left is to get myself and my poster through a French air traffic controllers’ strike and to the Palais de Congrès by Thursday . morning No Comments Leave a Reply All comments must be approved before appearing in the thread . We will only approve comments that are directly related to the blog , use appropriate language and are not attacking the comments of . others Name required Mail will not be published required Website Submit Comment Search : for Latest posts That’s

US LHC Blog 2010-07-19T00:43:54

ADE CPS CPS EAST Area CTF GPS HRS LEIR LHC Beam Dump LHC CMS Experiment LHC Configuration LHC Coordination LHC Cryogenics LHC Exp Magnets LHC Operation LHC Page 1 LHCf Experiment Linac II PSB PSP CNGS SPS LHC HIGH SPS LHC LOW SPS Page 1 SPS SFTLONG OP Vistars

tevatron «WordPress.com Tag Feed 2010-07-17T21:43:44

Mexico rocked my socks. That country rocked my socks right off. I have no more socks. And I’m

c08c0cf47308c8ed6f066fad1dce9786 tevatron «WordPress.com Tag Feed 2010-07-14T09:50:41

In search of fame I spread around A rumour that the Higgs was found; But now it’s clear it was

7a1817b475c748474c2d0568fea97e5d higgs-boson «WordPress.com Tag Feed 2010-07-14T06:34:00

Rumours of a discovery of the Higgs boson at Fermilab’s Tevatron collider appear to be unfound

dc4876c26648feba92b8ddb4272ad544 higgs-boson «WordPress.com Tag Feed 2010-07-14T05:06:52

Scuttlebutt is that the scientists at Fermilab just outside of Chicago may have found evidence for t

d70fd91178af391fb5c7bf37ba45bbb1 higgs-boson «WordPress.com Tag Feed 2010-07-14T00:50:37

* Circumstances when whipping it should be considered. * I can’t believe there are actually pe

f892ec0f1cc1b608b5dc5f516a562ea8 tevatron «WordPress.com Tag Feed 2010-07-13T21:06:05

There’s been a lot of buzz lately about possible evidence of the elusive Higgs Boson, the so-c

9f1434a66740f824a0911b3546413e08 tevatron «WordPress.com Tag Feed 2010-07-13T00:40:25

Fermilab Accelerator Rumours have being coming from the Fermi National Accelerator Laboratory in Bat

876a2e585d4c22800a433650db1f4a13 tevatron «WordPress.com Tag Feed 2010-07-10T19:51:33

It is not my habit to put rumors about as my readers know, but the news is really sensational. Tomma

d31bb3a8cd04fb7e6a913b373b7f5dc0 US LHC Blog 2010-07-10T13:13:51

: Follow us : on US LHC Blogs Home My Thesis Topic : Measuring Jets with the Inner Detector Posted by Seth Zenz on 03 Oct 2009 at 11:38 pm Hi , Seth here . I haven’t written much here lately , because I’ve been busy with two rather involved tasks . First , I’ve been working on the logistics of moving back to California in a few months and second , I’ve been I’ve been getting my thesis topic in shape . I gave a talk on it in a decent-sized ATLAS experiment meeting last week . Now that I’ve explained my work to my collaborators , I’m ready to try my hand at explaining it to all of . you The current title , at least for the talk I just gave , is Inclusive Jet Cross Section using the Inner Detector To explain what that means , I’ll have to take the title literally word by . word What’s a cross

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