Measurement of J/ψ-pair production in pp collisions at √s=13 TeV and study of gluon transverse-momentum dependent PDFs

被引：0

作者：

Aaij, R.

Abdelmotteleb, A. S. W. ^{[56
]}

Beteta, C. Abellan ^{[50
]}

Abudinen, F. ^{[56
]}

Ackernley, T. ^{[60
]}

Adeva, B. ^{[46
]}

Adinolfi, M. ^{[54
]}

Adlarson, P. ^{[80
]}

Afsharnia, H. ^{[11
]}

Agapopoulou, C. ^{[48
]}

Aidala, C. A. ^{[81
]}

Ajaltouni, Z. ^{[11
]}

Akar, S. ^{[65
]}

Akiba, K. ^{[36
]}

Albicocco, P. ^{[25
]}

Albrecht, J. ^{[17
]}

Alessio, F. ^{[48
]}

Alexander, M. ^{[59
]}

Alfonso Albero, A. ^{[45
]}

Aliouche, Z. ^{[62
]}

Cartelle, P. Alvarez ^{[55
]}

Amalric, R. ^{[15
]}

Amato, S. ^{[3
]}

Amey, J. L. ^{[54
]}

Amhis, Y. ^{[13
,48
]}

An, L. ^{[6
]}

Anderlini, L. ^{[24
]}

Andersson, M. ^{[50
]}

Andreianov, A. ^{[43
]}

Andreola, P. ^{[50
]}

Andreotti, M. ^{[23
]}

Andreou, D. ^{[68
]}

Anelli, A. ^{[28
,96
]}

Ao, D. ^{[7
]}

Archilli, F. ^{[35
,102
]}

Cuendis, S. Arguedas ^{[9
]}

Artamonov, A. ^{[43
]}

Artuso, M. ^{[68
]}

Aslanides, E. ^{[12
]}

Atzeni, M. ^{[64
]}

Audurier, B. ^{[14
]}

Bacher, D. ^{[63
]}

Perea, I. Bachiller ^{[10
]}

Bachmann, S. ^{[19
]}

Bachmayer, M. ^{[49
]}

Back, J. J. ^{[56
]}

Bailly-reyre, A. ^{[15
]}

Baladron Rodriguez, P. ^{[46
]}

Balagura, V. ^{[14
]}

Baldini, W. ^{[23
]}

机构：

[1] Monash Univ, Sch Phys & Astron, Melbourne, Australia

[2] Monash Univ, Sch Phys & Astron, Melbourne, Australia

[3] Ctr Brasileiro Pesquisas Fis CBPF, Rio De Janeiro, Brazil

[4] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China

[5] Inst High Energy Phys IHEP, Beijing, Peoples R China

[6] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing, Peoples R China

[7] Univ Chinese Acad Sci, Beijing, Peoples R China

[8] Cent China Normal Univ, Inst Particle Phys, Wuhan, Hubei, Peoples R China

[9] Consejo Nacl Rectores CONARE, San Jose, Costa Rica

[10] Univ Savoie Mt Blanc, CNRS, IN2P3 LAPP, Annecy, France

[11] Univ Clermont Auvergne, LPC, Clermont Ferrand, France

[12] Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France

[13] Univ Paris Saclay, IJCLab, CNRS, IN2P3, Orsay, France

[14] Inst Polytech Paris, Lab Leprince Ringuet, Ecole Polytech, CNRS,IN2P3, Palaiseau, France

[15] Sorbonne Univ, LPNHE, CNRS, IN2P3,Paris Diderot Sorbonne Paris Cite, Paris, France

[16] Rhein Westfal TH Aachen, Phys Inst 1, Aachen, Germany

[17] Tech Univ Dortmund, Fak Phys, Dortmund, Germany

[18] Max Planck Inst Kernphys MPIK, Heidelberg, Germany

[19] Heidelberg Univ, Phys Inst, Heidelberg, Germany

[20] Univ Coll Dublin, Sch Phys, Dublin, Ireland

[21] INFN, Sez Bari, Bari, Italy

[22] INFN, Sez Bologna, Bologna, Italy

[23] INFN, Sez Ferrara, Ferrara, Italy

[24] INFN, Sez Firenze, Florence, Italy

[25] INFN, Lab Nazl Frascati, Frascati, Italy

[26] INFN, Sez Genova, Genoa, Italy

[27] INFN, Sez Milano, Milan, Italy

[28] INFN, Sez Milano Bicocca, Milan, Italy

[29] INFN, Sez Cagliari, Monserrato, Italy

[30] Univ Padua, Padua, Italy

[31] INFN, Padua, Italy

[32] INFN, Sez Perugia, Perugia, Italy

[33] INFN, Sez Pisa, Pisa, Italy

[34] INFN, Sez Roma La Sapienza, Rome, Italy

[35] INFN, Sez Roma Tor Vergata, Rome, Italy

[36] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands

[37] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands

[38] Vrije Univ Amsterdam, Amsterdam, Netherlands

[39] Univ Sci & Technol, AGH, Fac Phys & Appl Comp Sci, Krakow, Poland

[40] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland

[41] Natl Ctr Nucl Res NCBJ, Warsaw, Poland

[42] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest, Romania

[43] CERN, Inst Covered Cooperat Agreement, Geneva, Switzerland

[44] Univ Ramon Llull, DS4DS, Barcelona, Spain

[45] Univ Barcelona, ICCUB, Barcelona, Spain

[46] Univ Santiago de Compostela, Inst Galego Fis Altas Enerxias IGFAE, Santiago De Compostela, Spain

[47] Ctr Mixto Univ Valencia CSIC, Inst Fis Corpuscular, Valencia, Spain

[48] European Org Nucl Res CERN, Geneva, Switzerland

[49] Ecole Polytech Fed Lausanne EPFL, Inst Phys, Lausanne, Switzerland

[50] Univ Zurich, Phys Inst, Zurich, Switzerland

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2024年 / 03期

关键词：

Hadron-Hadron Scattering; Multi-Parton Interactions; QCD; Quarkonium; DOUBLE PARTON SCATTERINGS; MATRIX-ELEMENT; HELAC-ONIA; GENERATOR;

D O I：

10.1007/JHEP03(2024)088

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The production cross-section of J/psi pairs in proton-proton collisions at a centre-of-mass energy of root s = 13TeV is measured using a data sample corresponding to an integrated luminosity of 4.2 fb(-1) collected by the LHCb experiment. The measurement is performed with both J/psi mesons in the transverse momentum range 0 < p(T) < 14 GeV/c and rapidity range 2.0 < y < 4.5. The cross-section of this process is measured to be 16.36 +/- 0.28 (stat) +/- 0.88 (syst) nb. The contributions from single-parton scattering and double-parton scattering are separated based on the dependence of the cross-section on the absolute rapidity difference Delta y between the two J/psi mesons. The effective cross-section of double-parton scattering is measured to be sigma(eff) = 13.1 +/- 1.8 (stat) +/- 2.3 (syst) mb. The distribution of the azimuthal angle phi(CS) of one of the J/psi mesons in the Collins-Soper frame and the p(T)-spectrum of the J/psi pairs are also measured for the study of the gluon transverse-momentum dependent distributions inside protons. The extracted values of < cos4 phi(CS)> and < cos2 phi(CS)> are consistent with zero, but the presence of azimuthal asymmetry at a few percent level is allowed.

引用

页数：40

共 50 条

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[2] Measurement of the J/ψ pair production cross-section in pp collisions at √s=13TeV
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[9] Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at √s=0.9 and 2.36 TeV
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Bergauer, T.
Dragicevic, M.
Ero, J.
Friedl, M.
Fruehwirth, R.
Ghete, V. M.
Hammer, J.
Haensel, S.
Hoch, M.
Hoermann, N.
Hrubec, J.
Jeitler, M.
Kasieczka, G.
Krammer, M.
Liko, D.
Mikulec, I.
Pernicka, M.
Rohringer, H.
Schoefbeck, R.
Strauss, J.
Taurok, A.
Teischinger, F.
Waltenberger, W.
Walzel, G.
Widl, E.
Wulz, C. -E.
Mossolov, V.
Shumeiko, N.
Gonzalez, J. Suarez
Benucci, L.
De Wolf, E. A.
Hashemi, M.
Janssen, X.
Maes, T.
Mucibello, L.
Ochesanu, S.
Rougny, R.
Selvaggi, M.
Van Haevermaet, H.
Van Mechelen, P.
Van Remortel, N.
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[10] Measurement of J/ψ-pair production 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 and study of gluon transverse-momentum dependent PDFs
R. Aaij
A. S. W. Abdelmotteleb
C. Abellan Beteta
F. Abudinén
T. Ackernley
B. Adeva
M. Adinolfi
P. Adlarson
H. Afsharnia
C. Agapopoulou
C. A. Aidala
Z. Ajaltouni
S. Akar
K. Akiba
P. Albicocco
J. Albrecht
F. Alessio
M. Alexander
A. Alfonso Albero
Z. Aliouche
P. Alvarez Cartelle
R. Amalric
S. Amato
J. L. Amey
Y. Amhis
L. An
L. Anderlini
M. Andersson
A. Andreianov
P. Andreola
M. Andreotti
D. Andreou
A. Anelli
D. Ao
F. Archilli
S. Arguedas Cuendis
A. Artamonov
M. Artuso
E. Aslanides
M. Atzeni
B. Audurier
D. Bacher
I. Bachiller Perea
S. Bachmann
M. Bachmayer
J. J. Back
A. Bailly-reyre
P. Baladron Rodriguez
V. Balagura
W. Baldini
Journal of High Energy Physics, 2024 (3)

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