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, 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; Aiola, Salvatore; Ajaz, Muhammad; Akindinov, Alexander; Alam, Sk Noor; Aleksandrov, Dimitry; Alessandro, Bruno; Alexandre, Didier; ALICE, Collaboration
Journal article, Peer reviewed
Published version
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http://hdl.handle.net/11250/2501986Utgivelsesdato
2017Metadata
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Sammendrag
The first study of φ-meson production in p–Pb collisions at forward and backward rapidity, at nucleon–nucleon centre-of-mass energy √sNN=5.02TeV, has been performed with the ALICE apparatus at the LHC. The φ-mesons have been identified in the dimuon decay channel in he transverse momentum (pT) range 1 < pT < 7 GeV/c, both in the p-going (2.03 < y < 3.53) and the Pb-going ( −4.46 < y < −2.96) directions — where ystands for the rapidity in the ucleon–nucleon centre-of-mass — the integrated luminosity amounting to 5.01 ±0.19nb−1and 5.81 ±0.20nb−1, respectively, for the two data sam-ples. 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 ∼0.5with no ignificant pTdependence within the uncertainties. The pTdependence of the φnuclear modification factor RpPbexhibits an enhancement up to a factor1.6 at pT=3–4GeV/cin the Pb-going direction. The pTdependence of the φ-meson cross section in pp collisions at √s=2.76TeV, which is used to determine a reference for the p–Pb results, is also presented here for 1 < pT < 5GeV/cand 2.5