Multiplicity dependence of σψ(2S)/σJ/ψ in pp collisions at s\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \sqrt{s} $$\end{document} = 13 TeV

被引：2

作者：

R. Aaij ^{[35
]}

A. S. W. Abdelmotteleb ^{[53
]}

C. Abellan Beteta ^{[47
]}

F. Abudinén ^{[53
]}

T. Ackernley ^{[57
]}

B. Adeva ^{[43
]}

M. Adinolfi ^{[51
]}

P. Adlarson ^{[77
]}

C. Agapopoulou ^{[45
]}

C. A. Aidala ^{[78
]}

Z. Ajaltouni ^{[11
]}

S. Akar ^{[62
]}

K. Akiba ^{[35
]}

P. Albicocco ^{[25
]}

J. Albrecht ^{[17
]}

F. Alessio ^{[45
]}

M. Alexander ^{[56
]}

A. Alfonso Albero ^{[42
]}

Z. Aliouche ^{[59
]}

P. Alvarez Cartelle ^{[52
]}

R. Amalric ^{[15
]}

S. Amato ^{[3
]}

J. L. Amey ^{[51
]}

Y. Amhis ^{[13
]}

L. An ^{[45
]}

L. Anderlini ^{[6
]}

M. Andersson ^{[24
]}

A. Andreianov ^{[47
]}

P. Andreola ^{[47
]}

M. Andreotti ^{[23
]}

D. Andreou ^{[65
]}

A. A. Anelli ^{[28
]}

D. Ao ^{[94
]}

F. Archilli ^{[7
]}

M. Argenton ^{[34
]}

S. Arguedas Cuendis ^{[100
]}

A. Artamonov ^{[23
]}

M. Artuso ^{[9
]}

E. Aslanides ^{[65
]}

M. Atzeni ^{[12
]}

B. Audurier ^{[61
]}

D. Bacher ^{[14
]}

I. Bachiller Perea ^{[60
]}

S. Bachmann ^{[10
]}

M. Bachmayer ^{[19
]}

J. J. Back ^{[46
]}

P. Baladron Rodriguez ^{[53
]}

V. Balagura ^{[43
]}

W. Baldini ^{[14
]}

J. Baptista de Souza Leite ^{[23
]}

机构：

[1] Monash University,School of Physics and Astronomy

[2] Centro Brasileiro de Pesquisas Físicas (CBPF),Center for High Energy Physics

[3] Universidade Federal do Rio de Janeiro (UFRJ),School of Physics State Key Laboratory of Nuclear Physics and Technology

[4] Tsinghua University,Institute of Particle Physics

[5] Institute Of High Energy Physics (IHEP),Laboratoire Leprince

[6] Peking University,Ringuet, CNRS/IN2P3, Ecole Polytechnique

[7] University of Chinese Academy of Sciences,I. Physikalisches Institut

[8] Central China Normal University,Fakultät Physik

[9] Consejo Nacional de Rectores (CONARE),Physikalisches Institut

[10] Université Savoie Mont Blanc,School of Physics

[11] CNRS,DS4DS, La Salle

[12] IN2P3-LAPP,Instituto Galego de Física de Altas Enerxías (IGFAE)

[13] Université Clermont Auvergne,Physik

[14] CNRS/IN2P3,Institut

[15] LPC,H.H. Wills Physics Laboratory

[16] Aix Marseille Univ,Cavendish Laboratory

[17] CNRS/IN2P3,Department of Physics

[18] CPPM,School of Physics and Astronomy

[19] Université Paris-Saclay,School of Physics and Astronomy

[20] CNRS/IN2P3,Oliver Lodge Laboratory

[21] IJCLab,Department of Physics and Astronomy

[22] Institut Polytechnique de Paris,Department of Physics

[23] LPNHE,Physics and Micro Electronic College

[24] Sorbonne Université,Guangdong Provincial Key Laboratory of Nuclear Science, Guangdong

[25] Paris Diderot Sorbonne Paris Cité,Hong Kong Joint Laboratory of Quantum Matter, Institute of Quantum Matter

[26] CNRS/IN2P3,School of Physics and Technology

[27] RWTH Aachen University,Departamento de Fisica

[28] Technische Universität Dortmund,Van Swinderen Institute

[29] Max-Planck-Institut für Kernphysik (MPIK),Department of Physics and Astronomy

[30] Ruprecht-Karls-Universität Heidelberg,Hangzhou Institute for Advanced Study

[31] University College Dublin,School of Physics and Electronics

[32] INFN Sezione di Bari,undefined

[33] INFN Sezione di Bologna,undefined

[34] INFN Sezione di Ferrara,undefined

[35] INFN Sezione di Firenze,undefined

[36] INFN Laboratori Nazionali di Frascati,undefined

[37] INFN Sezione di Genova,undefined

[38] INFN Sezione di Milano,undefined

[39] INFN Sezione di Milano-Bicocca,undefined

[40] INFN Sezione di Cagliari,undefined

[41] Università degli Studi di Padova,undefined

[42] Università e INFN,undefined

[43] Padova,undefined

[44] INFN Sezione di Perugia,undefined

[45] INFN Sezione di Pisa,undefined

[46] INFN Sezione di Roma La Sapienza,undefined

[47] INFN Sezione di Roma Tor Vergata,undefined

[48] Nikhef National Institute for Subatomic Physics,undefined

[49] Nikhef National Institute for Subatomic Physics and VU University Amsterdam,undefined

[50] AGH — University of Science and Technology,undefined

来源：

Journal of High Energy Physics | / 2024卷 / 5期

关键词：

Hadron-Hadron Scattering; Particle and Resonance Production; Quarkonium; Relativistic Heavy Ion Physics;

D O I：

10.1007/JHEP05(2024)243

中图分类号：

学科分类号：

摘要：

The ratio of production cross-sections of ψ(2S) over J/ψ mesons as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy s\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \sqrt{s} $$\end{document} = 13 TeV is measured with a data sample collected by the LHCb detector, corresponding to an integrated luminosity of 658 pb−1. The ratio is measured for both prompt and non-prompt ψ(2S) and J/ψ mesons. When there is an overlap between the rapidity ranges over which multiplicity and charmonia production are measured, a multiplicity-dependent modification of the ratio is observed for prompt mesons. No significant multiplicity dependence is found when the ranges do not overlap. For non-prompt production, the ψ(2S)-to-J/ψ production ratio is roughly independent of multiplicity, irrespective of the rapidity range over which the multiplicity is measured. The results are compared to predictions of the co-mover model and agree well except in the low multiplicity region. The ratio of production cross-sections of ψ(2S) over J/ψ mesons are cross-checked with other measurements in di-lepton channels and found to be compatible.

引用

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