ϒ suppression at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV

ALICE Collaboration; S. Acharya; H.A. Andrews; D. Evans; K.L. Graham; O. Jevons; P.G. Jones; A. Jusko; M. Krivda; J. Kvapil; R. Lietava; O. Villalobos Baillie; E. Willsher; N. Zardoshti

doi:10.1016/j.physletb.2018.11.067

ϒ suppression at forward rapidity in Pb–Pb collisions at √s_NN= 5.02 TeV

ALICE Collaboration, S. Acharya, H.A. Andrews, D. Evans, K.L. Graham, O. Jevons, P.G. Jones, A. Jusko, M. Krivda, J. Kvapil, R. Lietava, O. Villalobos Baillie, E. Willsher, N. Zardoshti

Physics and Astronomy

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Abstract

Inclusive Υ(1S) and Υ(2S) production have been measured in Pb–Pb collisions at the centre-of-mass energy pernucleon–nucleon pair √sNN=5.02 TeV, using the ALICE detector at the CERN LHC.The Υ mesons are reconstructed in the centre-of-mass rapidity interval 2.5<y<4 and in the transverse-momentum range pT<15GeV/c, via their decays to muon pairs. In this Letter, we present results on the inclusive Υ(1S) nuclear modification factor RAA as a function of collision centrality, transverse momentum and rapidity. The Υ(1S) and Υ(2S) RAA, integrated over the centrality range 0–90%, are 0.37±0.02(stat)±0.03(syst) and 0.10±0.04(stat)±0.02(syst), respectively, leading to a ratio RΥ(2S)AA/RΥ(1S)AA of 0.28±0.12(stat)±0.06(syst). The observed Υ(1S) suppression increases with the centrality of the collision and no significant variation is observed as a function of transverse momentum and rapidity.

Original language	English
Pages (from-to)	89-101
Number of pages	13
Journal	Physics Letters B
Volume	790
Early online date	29 Dec 2018
DOIs	https://doi.org/10.1016/j.physletb.2018.11.067
Publication status	Published - 10 Mar 2019

ASJC Scopus subject areas

Nuclear and High Energy Physics

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ALICE_collaboration_ϒ_suppression_at_forward_rapidity_in_PbPb_collisions_at_√sNN_=_5.02_TeV_Physics_Letters_B_2019
ALICE collaboration (2019) ϒ suppression at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV, Physics Letters B, volume 790, pages 89-101, https://doi.org/10.1016/j.physletb.2018.11.067
Final published version, 907 KBLicence: Creative Commons: Attribution (CC BY)

http://www.sciencedirect.com/science/article/pii/S0370269318309973Licence: Creative Commons: Attribution (CC BY)

Cite this

@article{a604114a952b48dfb80db08927b20f5e,

title = "ϒ suppression at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV",

abstract = "Inclusive Υ(1S) and Υ(2S) production have been measured in Pb–Pb collisions at the centre-of-mass energy pernucleon–nucleon pair √sNN=5.02 TeV, using the ALICE detector at the CERN LHC.The Υ mesons are reconstructed in the centre-of-mass rapidity interval 2.5<y<4 and in the transverse-momentum range pT<15GeV/c, via their decays to muon pairs. In this Letter, we present results on the inclusive Υ(1S) nuclear modification factor RAA as a function of collision centrality, transverse momentum and rapidity. The Υ(1S) and Υ(2S) RAA, integrated over the centrality range 0–90%, are 0.37±0.02(stat)±0.03(syst) and 0.10±0.04(stat)±0.02(syst), respectively, leading to a ratio RΥ(2S)AA/RΥ(1S)AA of 0.28±0.12(stat)±0.06(syst). The observed Υ(1S) suppression increases with the centrality of the collision and no significant variation is observed as a function of transverse momentum and rapidity.",

author = "{ALICE Collaboration} and S. Acharya and H.A. Andrews and D. Evans and K.L. Graham and O. Jevons and P.G. Jones and A. Jusko and M. Krivda and J. Kvapil and R. Lietava and {Villalobos Baillie}, O. and E. Willsher and N. Zardoshti",

year = "2019",

month = mar,

day = "10",

doi = "10.1016/j.physletb.2018.11.067",

language = "English",

volume = "790",

pages = "89--101",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

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TY - JOUR

T1 - ϒ suppression at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV

AU - ALICE Collaboration

AU - Acharya, S.

AU - Andrews, H.A.

AU - Evans, D.

AU - Graham, K.L.

AU - Jevons, O.

AU - Jones, P.G.

AU - Jusko, A.

AU - Krivda, M.

AU - Kvapil, J.

AU - Lietava, R.

AU - Villalobos Baillie, O.

AU - Willsher, E.

AU - Zardoshti, N.

PY - 2019/3/10

Y1 - 2019/3/10

N2 - Inclusive Υ(1S) and Υ(2S) production have been measured in Pb–Pb collisions at the centre-of-mass energy pernucleon–nucleon pair √sNN=5.02 TeV, using the ALICE detector at the CERN LHC.The Υ mesons are reconstructed in the centre-of-mass rapidity interval 2.5<y<4 and in the transverse-momentum range pT<15GeV/c, via their decays to muon pairs. In this Letter, we present results on the inclusive Υ(1S) nuclear modification factor RAA as a function of collision centrality, transverse momentum and rapidity. The Υ(1S) and Υ(2S) RAA, integrated over the centrality range 0–90%, are 0.37±0.02(stat)±0.03(syst) and 0.10±0.04(stat)±0.02(syst), respectively, leading to a ratio RΥ(2S)AA/RΥ(1S)AA of 0.28±0.12(stat)±0.06(syst). The observed Υ(1S) suppression increases with the centrality of the collision and no significant variation is observed as a function of transverse momentum and rapidity.

AB - Inclusive Υ(1S) and Υ(2S) production have been measured in Pb–Pb collisions at the centre-of-mass energy pernucleon–nucleon pair √sNN=5.02 TeV, using the ALICE detector at the CERN LHC.The Υ mesons are reconstructed in the centre-of-mass rapidity interval 2.5<y<4 and in the transverse-momentum range pT<15GeV/c, via their decays to muon pairs. In this Letter, we present results on the inclusive Υ(1S) nuclear modification factor RAA as a function of collision centrality, transverse momentum and rapidity. The Υ(1S) and Υ(2S) RAA, integrated over the centrality range 0–90%, are 0.37±0.02(stat)±0.03(syst) and 0.10±0.04(stat)±0.02(syst), respectively, leading to a ratio RΥ(2S)AA/RΥ(1S)AA of 0.28±0.12(stat)±0.06(syst). The observed Υ(1S) suppression increases with the centrality of the collision and no significant variation is observed as a function of transverse momentum and rapidity.

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U2 - 10.1016/j.physletb.2018.11.067

DO - 10.1016/j.physletb.2018.11.067

M3 - Article

SN - 0370-2693

VL - 790

SP - 89

EP - 101

JO - Physics Letters B

JF - Physics Letters B

ER -