φ-Meson production at forward rapidity in p-Pb collisions at √sNN=5.02 TeV and in pp collisions at √s=2.76 TeV



Adam, J, Adamova, D, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahn, SU, Aimo, I, Aiola, S
et al (show 980 more authors) (2017) φ-Meson production at forward rapidity in p-Pb collisions at √sNN=5.02 TeV and in pp collisions at √s=2.76 TeV PHYSICS LETTERS B, 768. pp. 203-217. ISSN 0370-2693, 1873-2445

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Abstract

The first study of ϕ-meson production in p–Pb collisions at forward and backward rapidity, at a nucleon–nucleon centre-of-mass energy s<inf>NN</inf>=5.02 TeV, has been performed with the ALICE apparatus at the LHC. The ϕ-mesons have been identified in the dimuon decay channel in the transverse momentum (p<inf>T</inf>) range 1<p<inf>T</inf><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 — the integrated luminosity amounting to 5.01±0.19 nb<sup>−1</sup> and 5.81±0.20 nb<sup>−1</sup>, respectively, for the two data samples. Differential cross sections as a function of transverse momentum and rapidity are presented. The forward–backward ratio for ϕ-meson production is measured for 2.96<|y|<3.53, resulting in a ratio ∼0.5 with no significant p<inf>T</inf> dependence within the uncertainties. The p<inf>T</inf> dependence of the ϕ nuclear modification factor R<inf>pPb</inf> exhibits an enhancement up to a factor 1.6 at p<inf>T</inf>=3–4 GeV/c in the Pb-going direction. The p<inf>T</inf> dependence of the ϕ-meson cross section in pp collisions at s=2.76 TeV, which is used to determine a reference for the p–Pb results, is also presented here for 1<p<inf>T</inf><5 GeV/c and 2.5<y<4, for a 78±3 nb<sup>−1</sup> integrated luminosity sample.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 29 Mar 2017 10:30
Last Modified: 23 Jun 2026 10:32
DOI: 10.1016/j.physletb.2017.01.074
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3006690
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