Coherent J/ψ photoproduction in ultra-peripheral Pb–Pb collisions at sNN=2.76 TeV
Nuclear and High Energy Physics
Electroproduction
FOS: Physical sciences
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
530
01 natural sciences
High Energy Physics - Experiment
High Energy Physics - Experiment (hep-ex)
High Energy Physics - Phenomenology (hep-ph)
0103 physical sciences
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Nuclear Physics - Experiment
Nuclear Experiment (nucl-ex)
Nuclear Experiment
Hera
ta114
PHYSICS; HERA; ELECTROPRODUCTION; LHC; QCD
J/ψ photoproduction
Physics
ddc:530
ALICE experiment; Ultra-peripheral Pb-Pb collisions; J/psi photoproduction
Qcd
ddc:
High Energy Physics - Phenomenology
QC Physics / fizika
[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
Lhc
Particle Physics - Experiment
j/Psi production, ultra-peripheral Pb-Pb collisions
DOI:
10.1016/j.physletb.2012.11.059
Publication Date:
2012-12-06T00:33:08Z
AUTHORS (976)
ABSTRACT
The ALICE Collaboration has made the first measurement at LHC of J/ψ photoproduction in ultra-peripheral Pb–Pb collisions sNN=2.76TeV. is identified via its dimuon decay forward rapidity region with muon spectrometer for events where hadronic activity required to be minimal. analysis based on an event sample corresponding integrated luminosity about 55 μb−1. cross section coherent production interval −3.6<y<−2.6 measured dσJ/ψcoh/dy=1.00±0.18(stat)−0.26+0.24(syst)mb. result compared theoretical models and found good agreement those which include nuclear gluon shadowing.
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