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Record LHC Collisions Mark New Era for Physics!

#81  Postby andyx1205 » Mar 31, 2010 3:54 am

http://www.newscientist.com/blogs/short ... break.html
Imagine firing needles across the Atlantic and getting them to collide halfway. That's the technical challenge facing engineers at the Large Hadron Collider today as they prepare to smash together proton beams at the highest-ever recorded energies.

The first attempt to achieve collisions at 7 teraelectronvolts - 3.5 TeV in each beam - began this morning. If successful, the machine will have broken its own world record for collision energy, which was set at 2.36 TeV last December.

Achieving collisions at 7 TeV is a milestone, and marks the official start of the LHC physics programme. Experiments around the machine will probe tens of trillions of high-energy collisions over the next 18 to 24 months.
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Re: Large Hadron Collider (LHC) News

#82  Postby Alan C » Mar 31, 2010 6:48 am

:yay: :yay: :yay:
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Re: Large Hadron Collider (LHC) News

#83  Postby Beelzebub » Mar 31, 2010 7:55 pm

They're at it again!! :grin:
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Re: Large Hadron Collider (LHC) News

#84  Postby newolder » Apr 01, 2010 11:42 am

http://user.web.cern.ch/user/news/2010/100401.html
News: 1 April 2010

High energy collisions reveal a paleoparticle


:lol:
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Re: Large Hadron Collider (LHC) News

#85  Postby Made of Stars » Apr 01, 2010 12:06 pm

newolder wrote:http://user.web.cern.ch/user/news/2010/100401.html
News: 1 April 2010

High energy collisions reveal a paleoparticle


:lol:

Someone has to tell Answers in Genesis, to see if they get the joke... :evilgrin:
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Re: Large Hadron Collider (LHC) News

#86  Postby trubble76 » Apr 01, 2010 12:32 pm

This is quite funny.

http://uk.news.yahoo.com/5/20100330/twl-success-for-god-particle-search-mach-3fd0ae9.html

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Re: Large Hadron Collider (LHC) News

#87  Postby Beelzebub » Apr 05, 2010 11:16 am

The cats are invading the LHC!!!!!!
Oh Noes !11!!111! :mrgreen:
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Re: Large Hadron Collider (LHC) News

#88  Postby juːtoʊpiə » Apr 18, 2010 10:58 am

Nautilidae wrote:This is a moment to be proud, gentlemen. This is what science is all about; progress.

But at what cost?!?! :ahrr:
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Re: Large Hadron Collider (LHC) News

#89  Postby klazmon » Apr 19, 2010 12:24 am

juːtoʊpiə wrote:
Nautilidae wrote:This is a moment to be proud, gentlemen. This is what science is all about; progress.

But at what cost?!?! :ahrr:


Small change in the great scheme of things.
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Re: Large Hadron Collider (LHC) News

#90  Postby newolder » Apr 21, 2010 9:02 pm

lhc-b sees decay of its first beauty particle.

The meson B+ is an anti-b and u quark pair that decays some distance from its source.
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Re: Large Hadron Collider (LHC) News

#91  Postby klazmon » Apr 21, 2010 11:40 pm

newolder wrote:lhc-b sees decay of its first beauty particle.

The meson B+ is an anti-b and u quark pair that decays some distance from its source.


I wonder why they didn't stick with b(eauty) quark and t(ruth) quark instead of the boring b(ottom) and t(op) quarks.
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Re: Large Hadron Collider (LHC) News

#92  Postby Rumraket » Apr 22, 2010 6:42 am

newolder wrote:lhc-b sees decay of its first beauty particle.

The meson B+ is an anti-b and u quark pair that decays some distance from its source.


This is not something "new" right? This is only another step on their way to reaffirm the standard model and already known physics in order to better understand the machine?
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Re: Large Hadron Collider (LHC) News

#93  Postby tnjrp » Apr 22, 2010 6:46 am

I understood it to be the fist B+ meson detection at LHCb.
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Re: Large Hadron Collider (LHC) News

#94  Postby Rumraket » Apr 22, 2010 7:34 am

tnjrp wrote:I understood it to be the fist B+ meson detection at LHCb.

Yes so did I. But what I meant was that, B+ mesons have been detected before in other accelerators.
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Re: Large Hadron Collider (LHC) News

#95  Postby tnjrp » Apr 22, 2010 8:04 am

Yep, that's my understanding too tho I didn't check right now. Sorry for causing confusion.
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Re: Large Hadron Collider (LHC) News

#96  Postby newolder » Apr 22, 2010 10:20 am

klazmon wrote:
newolder wrote:lhc-b sees decay of its first beauty particle.

The meson B+ is an anti-b and u quark pair that decays some distance from its source.


I wonder why they didn't stick with b(eauty) quark and t(ruth) quark instead of the boring b(ottom) and t(op) quarks.

I don't know how the Council For Naming Things works but my guess is the philosophers on that council probably don't like the idea of lowly physicists having a handle on the properties of truth and beauty. :dunno: :lol:
Rumraket wrote:This is not something "new" right? This is only another step on their way to reaffirm the standard model and already known physics in order to better understand the machine?

Correct. At these energies this confirms the lhc as a veritable beauty factory.

See also:
C. Amsler et al. (Particle Data Group), PL B667, 1 (2008) (URL: http://pdg.lbl.gov)
Many measurements of B decays involve admixtures of B hadrons. Previously we arbitrarily included such admixtures in the B± section, but because of their importance we have created two new sections: “B±/B0 Admixture” for Υ(4S) results and “B±/B0/B0s/b-baryon Admixture” for results at higher energies. Most inclusive decay branching fractions and χb at high energy are found in the Admixture sections. B0-B0 mixing data are found in the B0 section, while B0s-B0s mixing data and B-B mixing data for a B0/B0s admixture are found in the B0s section. CP-violation data are found in the B±, B0, and B± B0 Admixture sections. B-baryons are found near the end of the Baryon section.
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Re: Large Hadron Collider (LHC) News

#97  Postby newolder » May 20, 2010 7:24 pm

Geometric forgetting gives me loops. - Nima A-H
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Re: Large Hadron Collider (LHC) News

#98  Postby hackenslash » Jun 01, 2010 10:42 am

[youtube]http://www.youtube.com/watch?v=M3aB_zUZ1c8[/youtube]
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Re: Large Hadron Collider (LHC) News

#99  Postby lpetrich » Jun 03, 2010 12:31 pm

About a possible detection of an oscillation-generated tau neutrino.

It's produced with CERN's older hardware, the Super Proton Synchrotron. Its protons are sent into a beam dump, where they collide and produce lots of other particles, whose decays include muon-neutrinos. Those neutrinos are aimed at some detectors in Gran Sasso, Italy, and they oscillate along the way.

This program was about a tau-neutrino "candidate event" that was observed at Gran Sasso.
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Re: Large Hadron Collider (LHC) News

#100  Postby newolder » Jul 03, 2010 11:42 am

Monday, 5th July: :shock:
http://cdsweb.cern.ch/journal/CERNBulle ... 4486?ln=en
A new record peak luminosity for the LHC

Two weeks of dedicated machine development paid off last weekend when the LHC ran for physics with three nominal intensity (∼1011 protons) bunches in each beam. ...
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