Simulation study of χc→J/Ψ+γ detection with J/Ψ→e+e− in pp collisions in the ALICE experiment at LHC

We present Monte Carlo preliminary results about the feasibility to detect the χ c family in p-p collisions at 14 TeV in the ALICE Central Barrel at CERN LHC. The χ c 1 and χ c 2 were forced to decay in the radiative channel J / Ψ + γ → e + e − + γ and were merged with a proton-proton non-biased col...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2009-06, Vol.61 (4), p.899-903
Main Authors: González, P., de Guevara, P. Ladrón, Torres, E. López, Marín, A., Serradilla, E.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Cosmology
Collisions
Computer simulation
Elementary Particles
Hadrons
Heavy Ions
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Protons
Quantum Field Theories
Quantum Field Theory
Regular Article - Experimental Physics
String Theory
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Summary:We present Monte Carlo preliminary results about the feasibility to detect the χ c family in p-p collisions at 14 TeV in the ALICE Central Barrel at CERN LHC. The χ c 1 and χ c 2 were forced to decay in the radiative channel J / Ψ + γ → e + e − + γ and were merged with a proton-proton non-biased collision. After Monte Carlo transport and simulation of the detector response, the e + , e − and converted γ were reconstructed and identified in the ALICE ITS, TPC and TRD detectors. Separate signals corresponding to γ from χ c 1 and from χ c 2 were observed. The position and relative weight of the fit to gaussians agreed with the input values within the statistical limits.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-009-0895-4