TY - JOUR
T1 - Coherent J/psi photoproduction at forward rapidity in ultra-peripheral Pb-Pb collisions at root s(NN)=5.02 TeV
AU - Acharya, S.
AU - Adamova, D.
AU - Adhya, SP
AU - Adler, A.
AU - Adolfsson, J
AU - Aggarwal, MM.
AU - Rinella, G.A.
AU - Agnello, Maria
AU - Agrawal, N.
AU - Ahammed, Z.
AU - Bearden, Ian
AU - Bourjau, Christian Alexander
AU - Chojnacki, Marek
AU - Bilandzic, Ante
AU - Gajdosova, Katarina
AU - Gaardhøje, Jens Jørgen
AU - bsm989, bsm989
AU - rtc312, rtc312
AU - Thoresen, Freja
AU - Pacik, Vojtech
AU - Vislavicius, Vytautas
AU - Zhou, You
AU - Nielsen, Børge Svane
AU - Schukraft, Jürgen
AU - Alice Collaboration
PY - 2019/11/10
Y1 - 2019/11/10
N2 - The ALICE collaboration performed the first rapidity-differential measurement of coherent J/ψ photoproduction in ultra-peripheral Pb–Pb collisions at a center-of-mass energy sNN=5.02 TeV. The J/ψ is detected via its dimuon decay in the forward rapidity region (−4.0−1. The cross section for coherent J/ψ production is presented in six rapidity bins. The results are compared with theoretical models for coherent J/ψ photoproduction. These comparisons indicate that gluon shadowing effects play a role in the photoproduction process. The ratio of ψ′ to J/ψ coherent photoproduction cross sections was measured and found to be consistent with that measured for photoproduction off protons.
AB - The ALICE collaboration performed the first rapidity-differential measurement of coherent J/ψ photoproduction in ultra-peripheral Pb–Pb collisions at a center-of-mass energy sNN=5.02 TeV. The J/ψ is detected via its dimuon decay in the forward rapidity region (−4.0−1. The cross section for coherent J/ψ production is presented in six rapidity bins. The results are compared with theoretical models for coherent J/ψ photoproduction. These comparisons indicate that gluon shadowing effects play a role in the photoproduction process. The ratio of ψ′ to J/ψ coherent photoproduction cross sections was measured and found to be consistent with that measured for photoproduction off protons.
U2 - 10.1016/j.physletb.2019.134926
DO - 10.1016/j.physletb.2019.134926
M3 - Journal article
SN - 0370-2693
VL - 798
JO - Physics Letters B
JF - Physics Letters B
M1 - 134926
ER -