Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2008-09-08
Nuclear Physics B (Proceedings Supplements) (2009), pp. 136-144
Physics
High Energy Physics
High Energy Physics - Experiment
8 pages, 7 figures, presented at 8th International Conference on Hyperons, Charm and Beauty Hadrons, Columbia, SC, USA, 22 - 2
Scientific paper
10.1016/j.nuclphysbps.2009.01.02
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/psi and Upsilon, 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 Xi_c and Xi_b decays. Strategies of various measurements are outlined and methods of separating promptly produced J/psi and Upsilon mesons from various backgrounds are discussed.
Etzion Erez
Ginzburg Jony
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