Multiplicity and rapidity dependence of K*(892)<SUP>0</SUP> and φ(1020) production in p-Pb collisions at √<i>s</i><sub>NN</sub>=5.02 TeV


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Acharya S., Adamová D., Adler A., Aglieri Rinella G., Agnello M., Agrawal N., ...More

EUROPEAN PHYSICAL JOURNAL C, vol.83, no.6, 2023 (SCI-Expanded, Scopus) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 83 Issue: 6
  • Publication Date: 2023
  • Doi Number: 10.1140/epjc/s10052-023-11449-3
  • Journal Name: EUROPEAN PHYSICAL JOURNAL C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, INSPEC, zbMATH, Directory of Open Access Journals, Nature Index
  • Open Archive Collection: AVESIS Open Access Collection
  • Yıldız Technical University Affiliated: Yes

Abstract

The transverse-momentum (p(T)) spectra of K* (892)(0) and phi(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 root s(NN) = 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 (< pT >) 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 phi(1020) showsimilar Y-asym. The nuclear modification factor (QCP) 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.