ATLAS reach for Quarkonium production and polarization measurements

✍ Scribed by Erez Etzion; Jonatan Ginzburg

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 574 KB
• Volume: 187
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/j.nuclphysbps.2009.01.020

✦ Synopsis

The ATLAS detector at CERN's LHC is preparing to take data from the first proton-proton collisions expected in the next few months. We report on the analysis of simulated data samples for production of heavy Quarkonium states J/ψ and Υ, corresponding to an integrated luminosity of 10 pb -1 with center of mass energy of 14 TeV expected at the early ATLAS data. We review various aspects of prompt Quarkonium production at LHC: the accessible ranges in transverse momentum and pseudorapidity, spin alignment of vector states, separation of color octet and color singlet production mechanism and feasibility of observing radiative decays χc and χ b decays. Strategies of various measurements are outlined and methods of separating promptly produced J/ψ and Υ mesons from various backgrounds are discussed.