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arXiv · 0809.1459

ATLAS reach for Quarkonium cross section and polarization measurement

Erez Etzion·Jony Ginzburg
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Abstract

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.

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Erez Etzion, Jony Ginzburg. 2008-09-08. ATLAS reach for Quarkonium cross section and polarization measurement. https://doi.org/10.1016/j.nuclphysbps.2009.01.020

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