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

TL;DR

This study uses Monte Carlo simulations to evaluate the detection feasibility of the Chic quarkonium family via J/Psi + gamma decay in proton-proton collisions at 14 TeV with the ALICE detector at CERN LHC.

Contribution

It demonstrates the potential to identify Chic states through their decay channels using detailed detector simulations, highlighting the detector's capabilities.

Findings

Separate signals for Chic1 and Chic2 were observed.

The reconstructed signals matched input values within statistical limits.

Feasibility of detecting Chic states in pp collisions was confirmed.

Abstract

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.