Observation and study of the J/ψ → μ+μ- in the ATLAS experiment at LHC

2010/10/15 by Elvira Rossi, Rossi, Elvira
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex

paper · pdf · doi:10.48550/arxiv.1010.3123

3 pages, 2 figures, HCP2010

arxiv created 2010/10/15 · arxiv updated 2015/03/17

Abstract

The high cross section for the J/ψ production and the wide transverse momentum spectrum accessible to ATLAS give to these events a central role in the calibration of the ATLAS detector. The data collected during the first months of the 2010 run at \sqroots = 7 TeV p-p collisions (integrated Luminosity up to 290 nb-1) show a clear signal with two muons in the final state. The reconstructed invariant mass agrees with the PDG value and the peak width is compatible with Monte Carlo expectations. The doubly differential cross section is measured with respect to the transverse momentum and rapidity.

Related

• Measurement of coherent exclusive J/ψ→μ⁺μ^- production in ultraperipheral Pb+Pb collisions at √s_\textrmNN=5.36 TeV with the ATLAS detector
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• Muon Performance in the Presence of High Pile-up in ATLAS
• Measurement of the ATLAS di-muon trigger efficiency in proton-proton collisions at 7 TeV
• Production of charm and charmonium with the ATLAS detector at 7 TeV