Production of inclusive charmonia in pp collisions at center-of-mass energy of √s = 13TeV and p-Pb collisions at center-of-mass energy per nucleon pair of √s = 8.16TeV is studied as a function of charged-particle pseudorapidity density with ALICE. Ground and excited charmonium states ( J/psi, psi(2S)) are measured from their dimuon decays in the interval of rapidity in the center-of-mass frame 2.5 < y(cms) < 4.0 for pp collisions, and 2.03 < y(cms) < 3.53 and -4.46 < y(cms) < -2.96 for p-Pb collisions. The charged-particle pseudorapidity density is measured around midrapidity (| eta | < 1.0). In pp collisions, the measured charged-particle multiplicity extends to about six times the average value, while in p-Pb collisions at forward (backward) rapidity a multiplicity corresponding to about three (four) times the average is reached. The psi(2S) yield increases with the charged-particle pseudorapidity density. The ratio of psi(2S) over J/ yield does not show a significant multiplicity dependence in either colliding system, suggesting a similar behavior of J/ and psi(2S) yields with respect to charged-particle pseudorapidity density. Results for the psi(2S) yield and its ratio with respect to J/psi agree with available model calculations.

S. Acharya, D. Adamov??, A. Adler, G. Aglieri Rinella, M. Agnello, N. Agrawal, et al. (2023). Measurement of (2S) production as a function of charged-particle pseudorapidity density in pp collisions at √s=13 TeV and p-Pb collisions at √sNN=8.16 TeV with ALICE at the LHC. JOURNAL OF HIGH ENERGY PHYSICS, 2023(6), 0-28 [10.1007/jhep06(2023)147].

Measurement of (2S) production as a function of charged-particle pseudorapidity density in pp collisions at √s=13 TeV and p-Pb collisions at √sNN=8.16 TeV with ALICE at the LHC

N. Agrawal;A. Alici;S. Arcelli;F. Bellini;F. Carnesecchi;L. Cifarelli;M. Colocci;F. Ercolessi;M. Giacalone;N. Jacazio;N. Rubini;G. Scioli;S. Strazzi;
2023

Abstract

Production of inclusive charmonia in pp collisions at center-of-mass energy of √s = 13TeV and p-Pb collisions at center-of-mass energy per nucleon pair of √s = 8.16TeV is studied as a function of charged-particle pseudorapidity density with ALICE. Ground and excited charmonium states ( J/psi, psi(2S)) are measured from their dimuon decays in the interval of rapidity in the center-of-mass frame 2.5 < y(cms) < 4.0 for pp collisions, and 2.03 < y(cms) < 3.53 and -4.46 < y(cms) < -2.96 for p-Pb collisions. The charged-particle pseudorapidity density is measured around midrapidity (| eta | < 1.0). In pp collisions, the measured charged-particle multiplicity extends to about six times the average value, while in p-Pb collisions at forward (backward) rapidity a multiplicity corresponding to about three (four) times the average is reached. The psi(2S) yield increases with the charged-particle pseudorapidity density. The ratio of psi(2S) over J/ yield does not show a significant multiplicity dependence in either colliding system, suggesting a similar behavior of J/ and psi(2S) yields with respect to charged-particle pseudorapidity density. Results for the psi(2S) yield and its ratio with respect to J/psi agree with available model calculations.
2023
S. Acharya, D. Adamov??, A. Adler, G. Aglieri Rinella, M. Agnello, N. Agrawal, et al. (2023). Measurement of (2S) production as a function of charged-particle pseudorapidity density in pp collisions at √s=13 TeV and p-Pb collisions at √sNN=8.16 TeV with ALICE at the LHC. JOURNAL OF HIGH ENERGY PHYSICS, 2023(6), 0-28 [10.1007/jhep06(2023)147].
S. Acharya; D. Adamov??; A. Adler; G. Aglieri Rinella; M. Agnello; N. Agrawal; Z. Ahammed; S. Ahmad; S. U. Ahn; I. Ahuja; A. Akindinov; M. Al-Turany; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/951040
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