Study of ϒ production in pPb collisions at √sNN=8.16 TeV

LHCb Collaboration

doi:10.1007/JHEP11(2018)194

Study of ϒ production in pPb collisions at √sNN=8.16 TeV

LHCb Collaboration

Physics and Astronomy

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Abstract

The production of ϒ(nS) mesons (n = 1, 2, 3) in pPb and Pbp collisions at a centre-of-mass energy per nucleon pair sNN=8.16 TeV is measured by the LHCb experiment, using a data sample corresponding to an integrated luminosity of 31.8 nb ⁻¹ . The ϒ(nS) mesons are reconstructed through their decays into two opposite-sign muons. The measurements comprise the differential production cross-sections of the ϒ(1S) and ϒ(2S) states, their forward-to-backward ratios and nuclear modification factors. The measurements are performed as a function of the transverse momentum p _T and rapidity in the nucleon-nucleon centre-of-mass frame y ^* of the ϒ(nS) states, in the kinematic range p _T < 25 GeV/c and 1.5 < y ^* < 4.0 (−5.0 < y ^* < −2.5) for pPb (Pbp) collisions. In addition, production cross-sections for ϒ(3S) are measured integrated over phase space and the production ratios between all three ϒ(nS) states are determined. Suppression for bottomonium in proton-lead collisions is observed, which is particularly visible in the ratios. The results are compared to theoretical models.[Figure not available: see fulltext.]

Original language	English
Article number	194
Journal	Journal of High Energy Physics
Volume	2018
Issue number	11
DOIs	https://doi.org/10.1007/JHEP11(2018)194
Publication status	Published - 29 Nov 2018

Bibliographical note

The LHCb collaboration, Aaij, R., Abellán Beteta, C. et al. J. High Energ. Phys. (2018) 2018: 194. https://doi.org/10.1007/JHEP11(2018)194

Keywords

Heavy Ion Experiments

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1007/JHEP11(2018)194Licence: Creative Commons: Attribution (CC BY)

Aaij_et_al_Study_of_y_production_Journal_of_High_Energy_Physics_2018
The LHCb collaboration, Aaij, R., Abellán Beteta, C. et al. J. High Energ. Phys. (2018) 2018: 194. https://doi.org/10.1007/JHEP11(2018)194
Final published version, 825 KBLicence: Creative Commons: Attribution (CC BY)

Cite this

@article{2830a42a50544ed8a9ecfaa2871c375a,

title = "Study of ϒ production in pPb collisions at √sNN=8.16 TeV",

abstract = " The production of ϒ(nS) mesons (n = 1, 2, 3) in pPb and Pbp collisions at a centre-of-mass energy per nucleon pair sNN=8.16 TeV is measured by the LHCb experiment, using a data sample corresponding to an integrated luminosity of 31.8 nb −1 . The ϒ(nS) mesons are reconstructed through their decays into two opposite-sign muons. The measurements comprise the differential production cross-sections of the ϒ(1S) and ϒ(2S) states, their forward-to-backward ratios and nuclear modification factors. The measurements are performed as a function of the transverse momentum p T and rapidity in the nucleon-nucleon centre-of-mass frame y * of the ϒ(nS) states, in the kinematic range p T < 25 GeV/c and 1.5 < y * < 4.0 (−5.0 < y * < −2.5) for pPb (Pbp) collisions. In addition, production cross-sections for ϒ(3S) are measured integrated over phase space and the production ratios between all three ϒ(nS) states are determined. Suppression for bottomonium in proton-lead collisions is observed, which is particularly visible in the ratios. The results are compared to theoretical models.[Figure not available: see fulltext.] ",

keywords = "Heavy Ion Experiments",

author = "R. Aaij and {Abell{\'a}n Beteta}, C. and B. Adeva and M. Adinolfi and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and F. Archilli and P. d{\textquoteright}Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and S. Bifani and R. Calladine and G. Chatzikonstantinidis and N. Farley and P. Griffith and P. Ilten and C. Lazzeroni and A. Mazurov and L. Pescatore and J. Plews and D. Popov and A. Sergi and Slater, {M. W.} and M. Wang and Watson, {N. K.} and Zarebski, {K. A.} and {LHCb Collaboration}",

note = "The LHCb collaboration, Aaij, R., Abell{\'a}n Beteta, C. et al. J. High Energ. Phys. (2018) 2018: 194. https://doi.org/10.1007/JHEP11(2018)194",

year = "2018",

month = nov,

day = "29",

doi = "10.1007/JHEP11(2018)194",

language = "English",

volume = "2018",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer",

number = "11",

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TY - JOUR

T1 - Study of ϒ production in pPb collisions at √sNN=8.16 TeV

AU - Aaij, R.

AU - Abellán Beteta, C.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Archilli, F.

AU - d’Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Bifani, S.

AU - Calladine, R.

AU - Chatzikonstantinidis, G.

AU - Farley, N.

AU - Griffith, P.

AU - Ilten, P.

AU - Lazzeroni, C.

AU - Mazurov, A.

AU - Pescatore, L.

AU - Plews, J.

AU - Popov, D.

AU - Sergi, A.

AU - Slater, M. W.

AU - Wang, M.

AU - Watson, N. K.

AU - Zarebski, K. A.

AU - LHCb Collaboration

N1 - The LHCb collaboration, Aaij, R., Abellán Beteta, C. et al. J. High Energ. Phys. (2018) 2018: 194. https://doi.org/10.1007/JHEP11(2018)194

PY - 2018/11/29

Y1 - 2018/11/29

N2 - The production of ϒ(nS) mesons (n = 1, 2, 3) in pPb and Pbp collisions at a centre-of-mass energy per nucleon pair sNN=8.16 TeV is measured by the LHCb experiment, using a data sample corresponding to an integrated luminosity of 31.8 nb −1 . The ϒ(nS) mesons are reconstructed through their decays into two opposite-sign muons. The measurements comprise the differential production cross-sections of the ϒ(1S) and ϒ(2S) states, their forward-to-backward ratios and nuclear modification factors. The measurements are performed as a function of the transverse momentum p T and rapidity in the nucleon-nucleon centre-of-mass frame y * of the ϒ(nS) states, in the kinematic range p T < 25 GeV/c and 1.5 < y * < 4.0 (−5.0 < y * < −2.5) for pPb (Pbp) collisions. In addition, production cross-sections for ϒ(3S) are measured integrated over phase space and the production ratios between all three ϒ(nS) states are determined. Suppression for bottomonium in proton-lead collisions is observed, which is particularly visible in the ratios. The results are compared to theoretical models.[Figure not available: see fulltext.]

AB - The production of ϒ(nS) mesons (n = 1, 2, 3) in pPb and Pbp collisions at a centre-of-mass energy per nucleon pair sNN=8.16 TeV is measured by the LHCb experiment, using a data sample corresponding to an integrated luminosity of 31.8 nb −1 . The ϒ(nS) mesons are reconstructed through their decays into two opposite-sign muons. The measurements comprise the differential production cross-sections of the ϒ(1S) and ϒ(2S) states, their forward-to-backward ratios and nuclear modification factors. The measurements are performed as a function of the transverse momentum p T and rapidity in the nucleon-nucleon centre-of-mass frame y * of the ϒ(nS) states, in the kinematic range p T < 25 GeV/c and 1.5 < y * < 4.0 (−5.0 < y * < −2.5) for pPb (Pbp) collisions. In addition, production cross-sections for ϒ(3S) are measured integrated over phase space and the production ratios between all three ϒ(nS) states are determined. Suppression for bottomonium in proton-lead collisions is observed, which is particularly visible in the ratios. The results are compared to theoretical models.[Figure not available: see fulltext.]

KW - Heavy Ion Experiments

UR - http://www.scopus.com/inward/record.url?scp=85058642186&partnerID=8YFLogxK

U2 - 10.1007/JHEP11(2018)194

DO - 10.1007/JHEP11(2018)194

M3 - Article

AN - SCOPUS:85058642186

SN - 1126-6708

VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 11

M1 - 194

ER -

Study of ϒ production in pPb collisions at √sNN=8.16 TeV

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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