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ϒ production and nuclear modification at forward rapidity in Pb–Pb collisions at sNN=5.02TeV

Acharya, S ; Adolfsson, Jonatan LU ; Basu, Sumit LU orcid ; Christiansen, Peter LU ; Matonoha, Oliver LU ; Nassirpour, Adrian LU orcid ; Ohlson, Alice LU ; Oskarsson, Anders LU ; Richert, Tuva LU and Vazquez Rueda, Omar LU , et al. (2021) In Physics Letters B 822.
Abstract
The production of ϒ mesons in Pb–Pb collisions at a centre-of-mass energy per nucleon pair sNN=5.02 TeV is measured with the muon spectrometer of the ALICE detector at the LHC. The yields as well as the nuclear modification factors are determined in the forward rapidity region 2.5<y<4.0, as a function of rapidity, transverse momentum and collision centrality. The results show that the production of the ϒ(1S) meson is suppressed by a factor of about three with respect to the production in proton–proton collisions. For the first time, a significant signal for the ϒ(2S) meson is observed at forward rapidity, indicating a suppression stronger by about a factor 2–3 with respect to the ground state. The measurements are compared with... (More)
The production of ϒ mesons in Pb–Pb collisions at a centre-of-mass energy per nucleon pair sNN=5.02 TeV is measured with the muon spectrometer of the ALICE detector at the LHC. The yields as well as the nuclear modification factors are determined in the forward rapidity region 2.5<y<4.0, as a function of rapidity, transverse momentum and collision centrality. The results show that the production of the ϒ(1S) meson is suppressed by a factor of about three with respect to the production in proton–proton collisions. For the first time, a significant signal for the ϒ(2S) meson is observed at forward rapidity, indicating a suppression stronger by about a factor 2–3 with respect to the ground state. The measurements are compared with transport, hydrodynamic, comover and statistical hadronisation model calculations. © 2021 European Organization for Nuclear Research, ALICE (Less)
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organization
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type
Contribution to journal
publication status
published
subject
in
Physics Letters B
volume
822
article number
136579
publisher
Elsevier
external identifiers
  • scopus:85116414182
ISSN
0370-2693
DOI
10.1016/j.physletb.2021.136579
language
English
LU publication?
yes
id
eb0393b9-5402-40ca-ad6c-e24727c4787c
date added to LUP
2021-10-28 16:08:21
date last changed
2023-04-02 18:45:19
@article{eb0393b9-5402-40ca-ad6c-e24727c4787c,
  abstract     = {{The production of ϒ mesons in Pb–Pb collisions at a centre-of-mass energy per nucleon pair sNN=5.02 TeV is measured with the muon spectrometer of the ALICE detector at the LHC. The yields as well as the nuclear modification factors are determined in the forward rapidity region 2.5&lt;y&lt;4.0, as a function of rapidity, transverse momentum and collision centrality. The results show that the production of the ϒ(1S) meson is suppressed by a factor of about three with respect to the production in proton–proton collisions. For the first time, a significant signal for the ϒ(2S) meson is observed at forward rapidity, indicating a suppression stronger by about a factor 2–3 with respect to the ground state. The measurements are compared with transport, hydrodynamic, comover and statistical hadronisation model calculations. © 2021 European Organization for Nuclear Research, ALICE}},
  author       = {{Acharya, S and Adolfsson, Jonatan and Basu, Sumit and Christiansen, Peter and Matonoha, Oliver and Nassirpour, Adrian and Ohlson, Alice and Oskarsson, Anders and Richert, Tuva and Vazquez Rueda, Omar and Silvermyr, David and Zurlo, N}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  month        = {{11}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters B}},
  title        = {{ϒ production and nuclear modification at forward rapidity in Pb–Pb collisions at sNN=5.02TeV}},
  url          = {{http://dx.doi.org/10.1016/j.physletb.2021.136579}},
  doi          = {{10.1016/j.physletb.2021.136579}},
  volume       = {{822}},
  year         = {{2021}},
}