Szczegóły publikacji
Opis bibliograficzny
Centrality and transverse momentum dependence of inclusive $J/\psi$ production at midrapidity in $Pb–Pb$ collisions at $\sqrt{s_{NN}}=5.02$ TeV / S. Acharya, [et al.], P. J. Konopka, [et al.] // Physics Letters. B ; ISSN 0370-2693. — 2020 — vol. 805 art. no. 135434, s. 1–15. — Bibliogr. s. 9–10, Abstr. — ALICE Collaboration. — Publikacja dostępna online od: 2020-04-21. — P. Konopka - afiliacja: European Organization for Nuclear Research (CERN), Geneva, Switzerland
Autorzy (1008)
- Acharya Shreyasi
- Konopka Piotr
Dane bibliometryczne
| ID BaDAP | 133033 |
|---|---|
| Data dodania do BaDAP | 2021-03-16 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.physletb.2020.135434 |
| Rok publikacji | 2020 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physics Letters, B |
Abstract
The inclusive J/ψ meson production in Pb–Pb collisions at a center-of-mass energy per nucleon–nucleon collision of sNN=5.02 TeV at midrapidity (|y|<0.9) is reported by the ALICE Collaboration. The measurements are performed in the dielectron decay channel, as a function of event centrality and J/ψ transverse momentum pT, down to pT=0. The J/ψ mean transverse momentum 〈pT〉 and rAA ratio, defined as 〈pT2〉PbPb/〈pT2〉pp, are evaluated. Both observables show a centrality dependence decreasing towards central (head-on) collisions. The J/ψ nuclear modification factor RAA exhibits a strong pT dependence with a large suppression at high pT and an increase to unity for decreasing pT. When integrating over the measured momentum range pT<10 GeV/c, the J/ψ RAA shows a weak centrality dependence. Each measurement is compared with results at lower center-of-mass energies and with ALICE measurements at forward rapidity, as well as to theory calculations. All reported features of the J/ψ production at low pT are consistent with a dominant contribution to the J/ψ yield originating from charm quark (re)combination.