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Measurement of J/ψ at forward and backward rapidity in p+p , p+Al , p+Au , and He3+Au collisions at sqrt(s)_NN=200 GeV (CROSBI ID 287494)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

(PHENIX Collaboration) Aidala, C. ; ... ; Makek, Mihael ; ... ; Vukman, Nikola ; ... ; Zou, L. Measurement of J/ψ at forward and backward rapidity in p+p , p+Al , p+Au , and He3+Au collisions at sqrt(s)_NN=200 GeV // Physical review. C, 102 (2020), 1; 014902, 23. doi: 10.1103/physrevc.102.014902

Podaci o odgovornosti

Aidala, C. ; ... ; Makek, Mihael ; ... ; Vukman, Nikola ; ... ; Zou, L.

PHENIX Collaboration

engleski

Measurement of J/ψ at forward and backward rapidity in p+p , p+Al , p+Au , and He3+Au collisions at sqrt(s)_NN=200 GeV

Charmonium is a valuable probe in heavy-ion collisions to study the properties of the quark gluon plasma, and is also an interesting probe in small collision systems to study cold nuclear matter effects, which are also present in large collision systems. With the recent observations of collective behavior of produced particles in small system collisions, measurements of the modification of charmonium in small systems have become increasingly relevant. We present the results of J/ψ measurements at forward and backward rapidity in various small collision systems, p+p, p+Al, p+Au and 3He+Au, at sNN−−−√=200 GeV. The results are presented in the form of the observable RAB, the nuclear modification factor, a measure of the ratio of the J/ψ invariant yield compared to the scaled yield in p+p collisions. We examine the rapidity, transverse momentum, and collision centrality dependence of nuclear effects on J/ψ production with different projectile sizes p and 3He, and different target sizes Al and Au. The modification is found to be strongly dependent on the target size, but to be very similar for p+Au and 3He+Au. However, for 0%- -20% central collisions at backward rapidity, the modification for 3He+Au is found to be smaller than that for p+Au, with a mean fit to the ratio of 0.89±0.03(stat)±0.08(syst), possibly indicating final state effects due to the larger projectile size.

J/psi, p+p, p+Al, p+Au, He3+Au, 200 GeV, PHENIX, RHIC

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Podaci o izdanju

102 (1)

2020.

014902

23

objavljeno

2469-9985

2469-9993

10.1103/physrevc.102.014902

Povezanost rada

Fizika

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