In:
Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2018, No. 7 ( 2018-07)
Abstract:
Inclusive J/ ψ production is studied in p-Pb interactions at a centre-of-mass energy per nucleon-nucleon collision $$ \sqrt{s_{\mathrm{NN}}}=8.16 $$ s N N = 8.16 TeV, using the ALICE detector at the CERN LHC. The J/ ψ meson is reconstructed, via its decay to a muon pair, in the centre-of-mass rapidity intervals 2.03 〈 y cms 〈 3.53 and −4.46 〈 y cms 〈 −2.96, where positive and negative y cms refer to the p-going and Pb-going direction, respectively. The transverse momentum coverage is p T 〈 20 GeV/ c . In this paper, y cms - and p T -differential cross sections for inclusive J/ ψ production are presented, and the corresponding nuclear modification factors R pPb are shown. Forward results show a suppression of the J/ ψ yield with respect to pp collisions, concentrated in the region p T ≲ 5 GeV/ c . At backward rapidity no significant suppression is observed. The results are compared to previous measurements by ALICE in p-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ s N N = 5.02 TeV and to theoretical calculations. Finally, the ratios R FB between forward- and backward- y cms R pPb values are shown and discussed.
Type of Medium:
Online Resource
ISSN:
1029-8479
DOI:
10.1007/JHEP07(2018)160
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2018
detail.hit.zdb_id:
2027350-2