Coherent photoproduction of ρ 0 vector mesons in ultra-peripheral Pb-Pb collisions at √sNN = 5.02 TeV



Acharya, S, Adamova, D, Adler, A, Adolfsson, J, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S
et al (show 985 more authors) (2020) Coherent photoproduction of ρ 0 vector mesons in ultra-peripheral Pb-Pb collisions at √sNN = 5.02 TeV. JOURNAL OF HIGH ENERGY PHYSICS (6).

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Abstract

Cross sections for the coherent photoproduction of ρ0 vector mesons in ultra-peripheral Pb-Pb collisions at sNN−−−√ = 5.02 TeV are reported. The measurements, which rely on the π+π− decay channel, are presented in three regions of rapidity covering the range |y| < 0.8. For each rapidity interval, cross sections are shown for different nuclear-breakup classes defined according to the presence of neutrons measured in the zero-degree calorimeters. The results are compared with predictions based on different models of nuclear shadowing. Finally, the observation of a coherently produced resonance-like structure with a mass around 1.7 GeV/c2 and a width of about 140 MeV/c2 is reported and compared with similar observations from other experiments.

Item Type: Article
Uncontrolled Keywords: Heavy Ion Experiments, Heavy-ion collision, Particle and resonance production
Depositing User: Symplectic Admin
Date Deposited: 10 Sep 2020 12:50
Last Modified: 14 May 2021 04:11
DOI: 10.1007/JHEP06(2020)035
Open Access URL: https://doi.org/10.1007/JHEP06(2020)035
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3100679