Flow of [phi] mesons in pPb collisions at the LHC with the CMS detector

Abstract

Measurements of two-particle angular correlations between unidentified charged particles and [phi]-mesons are shown over a wide pseudorapidity range ([delta] [eta] < 2) in pPb collisions. The data, collected during 2013 pPb run at a nucleon-nucleon center-ofmass energy of 5.02 TeV with the CMS detector, corresponds to a total integrated luminosity of aproximately 35nb-1. [Phi]-mesons are reconstructed via their hadronic decay channel, [phi] --> K+K-, for high multiplicity events. The observed two-particle long range correlations are quantified by the second-order Fourier coefficients (v2) as a function of transverse momentum. The v2 of [phi]-mesons is compared to that of other identified particles, to study the mass ordering and quark number scaling effects in measurements of elliptic flow.