B Physics and Quarkonia studies with early ATLAS data

TL;DR

This paper discusses early B-Physics and quarkonia studies with ATLAS data at the LHC, focusing on detector calibration, production mechanisms, and potential for new physics insights in the initial data collection phase.

Contribution

It presents the first analysis prospects for B-Physics and quarkonia with early ATLAS data, including production mechanisms and detector performance insights.

Findings

Feasibility of quarkonia production measurements at early LHC energies

Potential to distinguish color octet and singlet production mechanisms

Calibration and detector performance insights from early B-physics data

Abstract

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