Multiplicity and rapidity dependence of K∗(892)0 and ϕ(1020) production in p–Pb collisions at √sNN = 5.02 TeV

The transverse-momentum (p _T) spectra of K ∗(892)0 and ϕ(1020) measured with the ALICE detector up to p _T = 16 GeV/c in the rapidity range - 1.2 < y< 0.3 , in p–Pb collisions at the center-of-mass energy per nucleon–nucleon collision sNN=5.02 TeV are presented as a function of charged particle multiplicity and rapidity. The measured p _T distributions show a dependence on both multiplicity and rapidity at low p _T whereas no significant dependence is observed at high p _T . A rapidity dependence is observed in the p _T -integrated yield (dN/dy), whereas the mean transverse momentum (⟨ p _T⟩) shows a flat behavior as a function of rapidity. The rapidity asymmetry (Y _asym) at low p _T (< 5 GeV/c) is more significant for higher multiplicity classes. At high p _T , no significant rapidity asymmetry is observed in any of the multiplicity classes. Both K ∗(892)0 and ϕ(1020) show similar Y _asym . The nuclear modification factor (Q _CP) as a function of p _T shows a Cronin-like enhancement at intermediate p _T , which is more prominent at higher rapidities (Pb-going direction) and in higher multiplicity classes. At high p _T (> 5 GeV/ c), the Q _CP values are greater than unity and no significant rapidity dependence is observed.