B Physics and Quarkonia studies with early ATLAS data

Details B Physics and Quarkonia studies with early ATLAS data B Physics and Quarkonia studies with early ATLAS data

2010-01-21

arxiv.org/abs/1001.3806v1

Physics

High Energy Physics

High Energy Physics - Experiment

Proceedings of the Fourth High-Energy Physics International Conference HEP-MAD 09, Antananarivo, Madagascar, August 21-28, 200

Scientific paper

Quarkonia and B-Physics are among the first areas to be investigated with the first data collected by ATLAS. The ATLAS detector at CERN's LHC is preparing to take data from proton-proton collisions expected to start by the end of 2009. Investigation of the decay of B-hadrons represents a complementary approach to direct searches for Physics beyond the Standard Model. Early B-physics data will provide valuable information on the detector performance, as well as allow calibration studies in support of new Physics searches. Meaningful quarkonia studies performed with early data are expected to have the reach to make authoritative statements about the underlying production mechanism and provide cross-sections in this new energy regime. We review various aspects of prompt quarkonium production at the LHC: the accessible ranges in transverse momentum and pseudo-rapidity, spin alignment of vector states, separation of color octet and color singlet production mechanism and feasibility of observing radiative chi_c decays

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