Coherent J/ψ photoproduction at midrapidity in Pb−Pb collisions at √sNN = 5.02 TeV
Acharya, S. ; Basu, S. LU
; Christiansen, P.
LU
; Hansen, J.
LU
; Iversen, K.E.
LU
; Matonoha, O.
LU
; Nepeivoda, R.
LU
; Ohlson, A.
LU
; Panasenko, I.
LU
and Silvermyr, D.
LU
, et al.
(2025)
In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
871.
- Abstract
- The coherent J/ ψ photoproduction cross section is measured for the first time at midrapidity in peripheral to semicentral Pb−Pb collisions at sNN=5.02 TeV. The centrality differential cross section d σ /d y is reported for the centrality range 40–90%, together with the doubly-differential cross section d2 σ /d y d p T, extracted in two peripheral centrality classes. The J/ ψ mesons are reconstructed in the dielectron channel, in the rapidity interval | y | < 0.9 using the ALICE central barrel detectors. The J/ ψ cross section at midrapidity is statistically compatible to the earlier ALICE measurement at forward rapidity and at the same centre-of-mass energy, and shows only a mild centrality dependence over the covered range. Several... (More)
- The coherent J/ ψ photoproduction cross section is measured for the first time at midrapidity in peripheral to semicentral Pb−Pb collisions at sNN=5.02 TeV. The centrality differential cross section d σ /d y is reported for the centrality range 40–90%, together with the doubly-differential cross section d2 σ /d y d p T, extracted in two peripheral centrality classes. The J/ ψ mesons are reconstructed in the dielectron channel, in the rapidity interval | y | < 0.9 using the ALICE central barrel detectors. The J/ ψ cross section at midrapidity is statistically compatible to the earlier ALICE measurement at forward rapidity and at the same centre-of-mass energy, and shows only a mild centrality dependence over the covered range. Several sets of theoretical calculations taking into account the hadronic overlap in the collisions but ignoring possible final-state effects from a hot expanding medium are found to give a fairly good description of the current measurements within uncertainties. © 2025 The Authors. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8ff41630-4ad8-4922-8852-fbef8d0c43c1
- author
- Acharya, S.
; Basu, S.
LU
; Christiansen, P.
LU
; Hansen, J.
LU
; Iversen, K.E.
LU
; Matonoha, O.
LU
; Nepeivoda, R.
LU
; Ohlson, A.
LU
; Panasenko, I.
LU
and Silvermyr, D.
LU
, et al. (More)
- Acharya, S.
; Basu, S.
LU
; Christiansen, P.
LU
; Hansen, J.
LU
; Iversen, K.E.
LU
; Matonoha, O.
LU
; Nepeivoda, R.
LU
; Ohlson, A.
LU
; Panasenko, I.
LU
; Silvermyr, D.
LU
; Staa, J.
LU
and Zurlo, N.
(Less)
- author collaboration
- organization
- publishing date
- 2025
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Charmonium, Coherent photoproduction, Ultra peripheral heavy-ion collisions
- in
- Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
- volume
- 871
- article number
- 139952
- publisher
- Elsevier
- external identifiers
-
- scopus:105024351334
- ISSN
- 0370-2693
- DOI
- 10.1016/j.physletb.2025.139952
- language
- English
- LU publication?
- yes
- id
- 8ff41630-4ad8-4922-8852-fbef8d0c43c1
- date added to LUP
- 2026-04-08 07:51:36
- date last changed
- 2026-04-08 07:54:17
@article{8ff41630-4ad8-4922-8852-fbef8d0c43c1,
abstract = {{The coherent J/ ψ photoproduction cross section is measured for the first time at midrapidity in peripheral to semicentral Pb−Pb collisions at sNN=5.02 TeV. The centrality differential cross section d σ /d y is reported for the centrality range 40–90%, together with the doubly-differential cross section d2 σ /d y d p T, extracted in two peripheral centrality classes. The J/ ψ mesons are reconstructed in the dielectron channel, in the rapidity interval | y | < 0.9 using the ALICE central barrel detectors. The J/ ψ cross section at midrapidity is statistically compatible to the earlier ALICE measurement at forward rapidity and at the same centre-of-mass energy, and shows only a mild centrality dependence over the covered range. Several sets of theoretical calculations taking into account the hadronic overlap in the collisions but ignoring possible final-state effects from a hot expanding medium are found to give a fairly good description of the current measurements within uncertainties. © 2025 The Authors.}},
author = {{Acharya, S. and Basu, S. and Christiansen, P. and Hansen, J. and Iversen, K.E. and Matonoha, O. and Nepeivoda, R. and Ohlson, A. and Panasenko, I. and Silvermyr, D. and Staa, J. and Zurlo, N.}},
issn = {{0370-2693}},
keywords = {{Charmonium; Coherent photoproduction; Ultra peripheral heavy-ion collisions}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}},
title = {{Coherent J/ψ photoproduction at midrapidity in Pb−Pb collisions at √s<sub>NN</sub> = 5.02 TeV}},
url = {{http://dx.doi.org/10.1016/j.physletb.2025.139952}},
doi = {{10.1016/j.physletb.2025.139952}},
volume = {{871}},
year = {{2025}},
}