Simulation Study of Chic -> J/Psi + gamma Detection with J/Psi -> e+ e- in pp Collisions

Details Simulation Study of Chic -> J/Psi + gamma Detection with J/Psi -> e+ e- in pp Collisions Simulation Study of Chic -> J/Psi + gamma Detection with J/Psi -> e+ e- in pp Collisions

2008-11-11

arxiv.org/abs/0811.1592v1

Eur.Phys.J.C61:899-903,2009; Erratum-ibid.C61:915,2009

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

10.1140/epjc/s10052-009-0895-4 1

We present Monte Carlo preliminary results about the feasibility to detect the Chic family in p-p collisions at 14 TeV in the ALICE Central Barrel at CERN LHC. The Chic1 and Chic2 were forced to decay in the channel J/Psi + gamma -> e+ e- + gamma and were merged with a proton-proton non-biased collision. After MonteCarlo transport and simulation of the detector response, the e+, e- and converted gamma were reconstructed and identified in the ALICE ITS, TPC and TRD detectors. Separate signals corresponding to gamma from Chic1 and from Chic2 were observed. The position and relative weight of the fit to gaussians agreed with the input values within the statistical limits. Similar studies will be done for Pb-Pb collisions.

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