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



Acharya, S, Adamová, D, Adler, A, Aglieri Rinella, G, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Ahuja, I
et al (show 1021 more authors) (2023) Multiplicity and rapidity dependence of K∗(892)0 and ϕ(1020) production in p–Pb collisions at √(sNN)=5.02 TeV The European Physical Journal C, 83 (6). 540-. ISSN 1434-6044, 1434-6052

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Abstract

AbstractThe transverse-momentum $$(p_{\textrm{T}})$$ ( p T ) spectra of K$$^{*}(892)^{0}~$$ ( 892 ) 0 and $$\mathrm {\phi (1020)}~$$ ϕ ( 1020 ) measured with the ALICE detector up to $$p_{\textrm{T}} $$ p T  = 16 GeV/c in the rapidity range $$-1.2< y < 0.3,$$ - 1.2 < y < 0.3 , in p–Pb collisions at the center-of-mass energy per nucleon–nucleon collision $$\sqrt{s_{\textrm{NN}}} = 5.02$$ s NN = 5.02  TeV are presented as a function of charged particle multiplicity and rapidity. The measured $$p_{\textrm{T}} $$ p T distributions show a dependence on both multiplicity and rapidity at low $$p_{\textrm{T}} $$ p T whereas no significant dependence is observed at high $$p_{\textrm{T}} $$ p T . A rapidity dependence is observed in the $$p_{\textrm{T}} $$ p T -integrated yield (dN/dy), whereas the mean transverse momentum $$\left( \langle p_{\textrm{T}} \rangle \right) $$ p T shows a flat behavior as a function of rapidity. The rapidity asymmetry ($$Y_{\textrm{asym}}$$ Y asym ) at low $$p_{\textrm{T}} $$ p T (< 5 GeV/c) is more significant for higher multiplicity classes. At high $$p_{\textrm{T}} $$ p T , no significant rapidity asymmetry is observed in any of the multiplicity classes. Both K$$^{*}(892)^{0}~$$ ( 892 ) 0 and $$\mathrm {\phi (1020)}~$$ ϕ ( 1020 ) show similar $$Y_{\textrm{asym}}$$ Y asym . The nuclear modification factor $$(Q_{\textrm{CP}})$$ ( Q CP ) as a function of $$p_{\textrm{T}} $$ p T shows a Cronin-like enhancement at intermediate $$p_{\textrm{T}} $$ p T , which is more prominent at higher rapidities (Pb-going direction) and in higher multiplicity classes. At high $$p_{\textrm{T}}$$ p T (> 5 GeV/$$c$$ c ), the $$Q_{\textrm{CP}}$$ Q CP values are greater than unity and no significant rapidity dependence is observed.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Divisions: Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 03 Oct 2023 15:32
Last Modified: 23 May 2026 07:28
DOI: 10.1140/epjc/s10052-023-11449-3
Open Access URL: https://doi.org/10.1140/epjc/s10052-023-11449-3
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3173378
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