phi-Meson production at forward rapidity in p-Pb collisions at root s(NN)=5.02 TeV and in pp collisions at root s=2.76 TeV

0475681 - ÚJF 2018 RIV NL eng J - Článek v odborném periodiku
Adam, J. - Adamová, Dagmar - Bielčík, J. - Bielčíková, Jana - Broz, M. - Čepila, J. - Contreras, J. G. - Eyyubova, G. - Ferencei, Jozef - Křížek, Filip - Kučera, Vít - Kushpil, Svetlana - Mareš, Jiří A. - Petráček, V. - Pospíšil, Jan - Schulc, M. - Špaček, M. - Šumbera, Michal - Vajzer, Michal - Vaňát, Tomáš - Závada, Petr … celkem 990 autorů
phi-Meson production at forward rapidity in p-Pb collisions at root s(NN)=5.02 TeV and in pp collisions at root s=2.76 TeV.
Physics Letters. B. Roč. 768, MAY (2017), s. 203-2017. ISSN 0370-2693. E-ISSN 1873-2445
Grant CEP: GA MŠMT(CZ) LG15052
Institucionální podpora: RVO:68378271 ; RVO:61389005
Klíčová slova: ALICE collaboration * quark gluon plasma * transverse momentum dependence
Obor OECD: Nuclear physics; Particles and field physics (FZU-D)
Impakt faktor: 4.254, rok: 2017

The first study of phi-meson production in p-Pb collisions at forward and backward rapidity, at a nucleonnucleon centre-of-mass energy root s(NN)= 5.02 TeV, has been performed with the ALICE apparatus at the LHC. The phi-mesons have been identified in the dimuon decay channel in the transverse momentum (p(T)) range 1 < p(T) < 7GeV/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 nucleon-nucleon centre-of-mass - the integrated luminosity amounting to 5.01 +/- 0.19nb(-1) and 5.81 +/- 0.20nb(-1), respectively, for the two data samples. Differential cross sections as a function of transverse momentum and rapidity are presented. The forward-backward ratio for f-meson production is measured for 2.96 <|y| < 3.53, resulting in a ratio similar to 0.5 with no significant p(T) dependence within the uncertainties. The p(T) dependence of the phi nuclear modification factor R-pPb exhibits an enhancement up to a factor 1.6 at p(T) = 3-4GeV/c in the Pb-going direction. The p(T) dependence of the f-meson cross section in pp collisions at root s= 2.76 TeV, which is used to determine a reference for the p-Pb results, is also presented here for 1 < pT< 5GeV/c and 2.5 < y < 4, for a 78 +/- 3nb(-1) integrated luminosity sample.
Trvalý link: http://hdl.handle.net/11104/0272336