KWSN Orbiting Fortress Forum Index KWSN Orbiting Fortress
KWSN Distributed Computing Teams forum
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

LHC News!

 
Post new topic   Reply to topic    KWSN Orbiting Fortress Forum Index -> Science News and Discussion
View previous topic :: View next topic  
Author Message
PhastPhred
Prince
Prince


Joined: 22 Mar 2006
Posts: 6017
Location: Northwest AR (USA)
PostPosted: Sat Dec 24, 2011 9:17 pm    Post subject: LHC News! Reply with quote
http://arxiv.org/abs/1112.5154
High Energy Physics - Experiment
Observation of a new chi_b state in radiative transitions to Upsilon(1S) and Upsilon(2S) at ATLAS
Quote:
ATLAS Collaboration
(Submitted on 21 Dec 2011)

The chi_b(nP) quarkonium states are produced in proton-proton collisions at the Large Hadron Collider (LHC) at sqrt(s) = 7 TeV and recorded by the ATLAS detector. Using a data sample corresponding to an integrated luminosity of 4.4 fb^-1, these states are reconstructed through their radiative decays to Upsilon(1S,2S) with Upsilon->mu+mu-. In addition to the mass peaks corresponding to the decay modes chi_b(1P,2P)->Upsilon(1S)gamma, a new structure centered at a mass of 10.539+/-0.004 (stat.)+/-0.008 (syst.) GeV is also observed, in both the Upsilon(1S)gamma and Upsilon(2S)gamma decay modes. This is interpreted as the chi_b(3P) system.


http://www.bbc.co.uk/news/science-environment-16301908
22 December 2011 Last updated at 05:59 ET

LHC reports discovery of its first new particle
Quote:
The Large Hadron Collider (LHC) on the Franco-Swiss border has made its first clear observation of a new particle since opening in 2009.

It is called Chi_b (3P) and will help scientists understand better the forces that hold matter together.


_________________
Back to top
View user's profile Send private message Send e-mail Visit poster's website AIM Address Yahoo Messenger MSN Messenger
Sir Hamster's Goat
Goat-tacular!


Joined: 21 Jul 2010
Posts: 352
Location: http://goat-simulator.com/
PostPosted: Sun Dec 25, 2011 11:52 pm    Post subject: Reply with quote
MAAAASS!
_________________
BAAAA!
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    KWSN Orbiting Fortress Forum Index -> Science News and Discussion All times are GMT - 5 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group
Optimized Seti@Home App | BOINC Stats