Szczegóły publikacji
Opis bibliograficzny
Measurement of cold nuclear matter effects for inclusive $J/\psi$ in p+Au collisions at $\sqrt{s_{NN}}$=200 GeV / M. S. Abdallah, [et al.], L. ADAMCZYK, [et al.], L. FULEK, [et al.], M. PRZYBYCIEŃ, [et al.], R. SIKORA // Physics Letters. B ; ISSN 0370-2693. — 2022 — vol. 825 art. no. 136865, s. 1–10. — Bibliogr. s. 9–10, Abstr. — Publikacja dostępna online od: 2022-01-06
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Dane bibliometryczne
| ID BaDAP | 139258 |
|---|---|
| Data dodania do BaDAP | 2022-03-03 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.physletb.2021.136865 |
| Rok publikacji | 2022 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physics Letters, B |
Abstract
Measurement by the STAR experiment at RHIC of the cold nuclear matter (CNM) effects experienced by inclusive J/ψ at mid-rapidity in 0-100% p+Au collisions at sNN = 200 GeV is presented. Such effects are quantified utilizing the nuclear modification factor, RpAu, obtained by taking a ratio of J/ψ yield in p+Au collisions to that in p+p collisions scaled by the number of binary nucleon-nucleon collisions. The differential J/ψ yield in both p+p and p+Au collisions is measured through the dimuon decay channel, taking advantage of the trigger capability provided by the Muon Telescope Detector in the RHIC 2015 run. Consequently, the J/ψ RpAu is derived within the transverse momentum (pT) range of 0 to 10 GeV/c. A suppression of approximately 30% is observed for pT<2 GeV/c, while J/ψ RpAu becomes compatible with unity for pT greater than 3 GeV/c, indicating the J/ψ yield is minimally affected by the CNM effects at high pT. Comparison to a similar measurement from 0-20% central Au+Au collisions reveals that the observed strong J/ψ suppression above 3 GeV/c is mostly due to the hot medium effects, providing strong evidence for the formation of the quark-gluon plasma in these collisions. Several model calculations show qualitative agreement with the measured J/ψ RpAu, while their agreement with the J/ψ yields in p+p and p+Au collisions is worse. © 2022 The Author(s)
