physics4me

physicsgg

Posts Tagged ‘High Energy Physics

The First Year of the Large Hadron Collider: A Brief Review

leave a comment »

Abstract: The first year of LHC data taking provided an integrated luminosity of about 35/pb in proton-proton collisions at sqrt(s)=7 TeV. The accelerator and the experiments have demonstrated an excellent performance. The experiments have obtained important physics results in many areas, ranging from tests of the Standard Model to searches for new particles. Among other results the physics highlights have been the measurements of the W-, Z-boson and t t-bar production cross-sections, improved limits on supersymmetric and other hypothetical particles and the observation of jet-quenching, elliptical flow and J/Psi suppression in lead-lead collisions at sqrt(sNN) = 2.76 TeV…………..
Summary: …….Already in the first months the LHC experiments reached the design performance. In more than hundred publications and conference notes tests of the Standard Model and searches for new particles were performed. Among other results the physics highlights have been the measurements of the W-, Z-boson and tt production cross-section, improved limits on supersymmetric and other hypothetical particles and the observation of jet-quenching, elliptical flow and J/ψ suppression in lead-lead collisions at sqrt(sNN) = 2.76 TeV. For the 2011 data taking one expects more than 50 times higher integrated luminosities. This will open the possibilities to search for the Higgs boson and to explore a wide parameter space in supersymmetric models. With the recent decision to continue the LHC data taking in 2012 at 7 or 8 TeV it should be possible to place 95% C.L. limits on Standard Model Higgs bosons from 114 GeV up to 600 GeV at the end of 2012. Therefore the coming two years will be decisive for the validity of the Standard Model and for the search for new particles.
Read more:  http://arxiv.org/PS_cache/arxiv/pdf/1104/1104.4205v1.pdf

Written by physicsgg

April 30, 2011 at 4:53 pm