\(\phi\)-meson production at forward rapidity in p-Pb collisions at \(\sqrt{s_{\rm NN}}\) = 5.02 TeV and in pp collisions at \(\sqrt{s}\) = 2.76 TeV
Adam, Jaroslav; Adamová, Dagmar; Aggarwal, Madan M.; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Nikita; Ahammed, Zubayer; Ahmad, Shafiq F.; Ahn, Sang Un; Aimo, Ilaria; Alme, Johan; Helstrup, Håvard; Hetland, Kristin Fanebust; Kileng, Bjarte; Altinpinar, Sedat; Djuvsland, Øystein; Haaland, Øystein Senneset; Huang, Meidana; Lønne, Per-Ivar; Nystrand, Joakim; Rehman, Attiq ur; Røhrich, Dieter; Tambave, Ganesh Jagannath; Ullaland, Kjetil; Wagner, Boris; Zhang, Hui; Zhou, Zhuo; Zhu, Hongsheng; Arsene, Ionut Christian; Bätzing, Paul Christoph; Dordic, Olja; Lindal, Svein; Mahmood, Sohail Musa; Milosevic, Jovan; Qvigstad, Henrik; Richter, Matthias; Røed, Ketil; Skaali, Toralf Bernhard; Tveter, Trine Spedstad; Wikne, Jon Christopher; Zhao, Chengxin; Langøy, Rune; Lien, Jørgen André; Aiola, Salvatore; Ajaz, Muhammad; Akindinov, Alexander; Alam, Sk Noor; Aleksandrov, Dimitry; Alessandro, Bruno; Alexandre, Didier; ALICE, Collaboration
Peer reviewed, Journal article
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Date
2017-03Metadata
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https://doi.org/10.1016/j.physletb.2017.01.074Abstract
The first measurement of \(\phi\).meson production in p-Pb collisions at a nucleon-nucleon centre-of-mass energy \(\sqrt{s_{\rm NN}}\) = 5.02 TeV has been performed with the ALICE apparatus at the LHC. \(\phi\) mesons have been identified in the dimuon decay channel in the transverse momentum \(p_{\rm T}\) range \(1 < p_{\rm T} < 7\) GeV/c, both in the p-going \(2.03 < y < 3.53\) and the Pb-going \(-4.46 < y < -2.96\) directions, where \(y\) stands for the rapidity in the nucleon-nucleon centre-of-mass. Differential cross sections as a function of transverse momentum and rapidity are presented. The forward-backward asymmetry for \(\phi\).meson production is measured for \(2.96 < |y| < 3.53\). showing no significant \(p_{\rm T}\) dependence within the uncertainties. The \(p_{\rm T}\).dependence of the \(\phi\) nuclear modification factor \(R_{\rm pPb}\) exhibits an enhancement up to a factor 1.6 at \(p_{\rm T}\) = 3-4 GeV/c in the Pb-going direction. The \(p_{\rm T}\) dependence of the \(\phi\).meson cross section in pp collisions at \(\sqrt{s}\) = 2.76 TeV, which is used to determine a reference for the p-Pb results, is also presented here for \(1 < p_{\rm T} < 5\) GeV/c and \(2.5 < y < 4\).