First measurement of the |t|-dependence of coherent J/ψ photonuclear production

被引：49

作者：

Acharya, S. ^{[157
]}

Acosta, F. T. ^{[24
]}

Adam, J.

Adamova, D. ^{[108
]}

Adler, A. ^{[89
]}

Adolfsson, J. ^{[95
]}

Aggarwal, M. M. ^{[113
]}

Rinella, G. Aglieri ^{[49
]}

Agnello, M. ^{[43
,44
]}

Agrawal, N. ^{[63
]}

Ahammed, Z. ^{[157
]}

Ahn, S. U. ^{[91
]}

Aiola, S. ^{[162
]}

Akindinov, A. ^{[79
]}

Al-Turany, M. ^{[119
,120
]}

Alam, S. N. ^{[157
]}

Albuquerque, D. S. D. ^{[137
]}

Aleksandrov, D. ^{[102
]}

Alessandro, B. ^{[73
]}

Alfanda, H. M. ^{[7
]}

Alfaro Molina, R. ^{[87
]}

Ali, Y. ^{[19
]}

Alici, A. ^{[13
,14
,35
,36
,68
]}

Alkin, A. ^{[2
]}

Alme, J. ^{[26
]}

Alt, T. ^{[84
]}

Altenkamper, L. ^{[26
]}

Altsybeev, I. ^{[127
]}

Anaam, M. N. ^{[7
]}

Andrei, C. ^{[62
]}

Andreou, D. ^{[49
]}

Andrews, H. A. ^{[124
]}

Andronic, A. ^{[119
,120
,160
]}

Angeletti, M. ^{[49
]}

Anguelov, V. ^{[117
]}

Anson, C. ^{[20
]}

Anticic, T. ^{[121
]}

Antinori, F. ^{[71
]}

Antonioli, P. ^{[68
]}

Anwar, R. ^{[141
]}

Apadula, N. ^{[94
]}

Aphecetche, L. ^{[129
]}

Appelshaeuser, H. ^{[84
]}

Arcelli, S. ^{[35
,36
]}

Arnaldi, R. ^{[73
]}

Arratia, M. ^{[94
]}

Arsene, I. C. ^{[25
]}

Arslandok, M. ^{[117
]}

Augustinus, A. ^{[49
]}

Averbeck, R. ^{[119
,120
]}

机构：

[1] Yerevan Phys Inst, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia

[2] Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine

[3] Bose Inst, Dept Phys, Kolkata, India

[4] Bose Inst, Ctr Astroparticle Phys & Space Sci, Kolkata, India

[5] Budker Inst Nucl Phys, Novosibirsk, Russia

[6] Calif Polytechn State Univ, San Luis Obispo, CA USA

[7] Cent China Normal Univ, Wuhan, Hubei, Peoples R China

[8] Ctr Calcul IN2P3, Villeurbanne, France

[9] Ctr Calcul IN2P3, Lyon, France

[10] Ctr Aplicaciones Tecnolog & Desarrollo Nucl CEADE, Havana, Cuba

[11] Ctr Investigac & Estudios Avanzados CINVESTAV, Mexico City, DF, Mexico

[12] Ctr Investigac & Estudios Avanzados CINVESTAV, Merida, Venezuela

[13] Ctr Fermi Museo Storico Fis, Rome, Italy

[14] Ctr Studi & Ric Enrico Fermi, Rome, Italy

[15] Chicago State Univ, Chicago, IL USA

[16] China Inst Atom Energy, Beijing, Peoples R China

[17] Chonbuk Natl Univ, Jeonju, South Korea

[18] Comenius Univ, Fac Math, Phys & Informat, Bratislava, Slovakia

[19] COMSATS Inst Informat Technol CIIT, Islamabad, Pakistan

[20] Creighton Univ, Omaha, NE 68178 USA

[21] Aligarh Muslim Univ, Dept Phys, Aligarh, Uttar Pradesh, India

[22] Pusan Natl Univ, Dept Phys, Pusan, South Korea

[23] Sejong Univ, Dept Phys, Seoul, South Korea

[24] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[25] Univ Oslo, Dept Phys, Oslo, Norway

[26] Univ Bergen, Dept Phys & Technol, Bergen, Norway

[27] Univ Roma La Sapienza, Dipartimento Fis, Rome, Italy

[28] Sezione Ist Nazl Fis Nucl, Rome, Italy

[29] Univ Cagliari, Dipartimento Fis, Cagliari, Italy

[30] Sezione Ist Nazl Fis Nucl, Cagliari, Italy

[31] Univ Trieste, Dipartimento Fis, Trieste, Italy

[32] Sezione Ist Nazl Fis Nucl, Trieste, Italy

[33] Univ Turin, Dipartimento Fis, Turin, Italy

[34] Sezione Ist Nazl Fis Nucl, Turin, Italy

[35] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy

[36] Sezione Ist Nazl Fis Nucl, Bologna, Italy

[37] Univ Catania, Dipartimento Fis & Astron, Catania, Italy

[38] Sezione Ist Nazl Fis Nucl, Catania, Italy

[39] Univ Padua, Dipartimento Fis & Astron, Padua, Italy

[40] Sezione Ist Nazl Fis Nucl, Padua, Italy

[41] ER Caianiello Univ Salerno, Dipartimento Fis, Salerno, Italy

[42] Grp Collegato INFN, Salerno, Italy

[43] Politecn Torino, Dipartimento DISAT, Turin, Italy

[44] Sezione Ist Nazl Fis Nucl, Turin, Italy

[45] Univ Piemonte Orientale, Dipartimento Sci & Innovaz Tecnol, Alessandria, Italy

[46] INFN, Sez Torino, Alessandria, Italy

[47] Dipartimento Interateneo Fis M Merlin, Bari, Italy

[48] Sezione Ist Nazl Fis Nucl, Bari, Italy

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

[50] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia

来源：

PHYSICS LETTERS B | 2021年 / 817卷

基金：

美国能源部; 新加坡国家研究基金会; 奥地利科学基金会; 英国科学技术设施理事会; 美国国家科学基金会; 中国国家自然科学基金; 日本学术振兴会; 巴西圣保罗研究基金会; 俄罗斯科学基金会; 俄罗斯基础研究基金会; 瑞典研究理事会;

关键词：

PB-PB COLLISIONS; PHOTOPRODUCTION; PHYSICS;

D O I：

10.1016/j.physletb.2021.136280

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The first measurement of the cross section for coherent J/Psi photoproduction as a function of vertical bar t vertical bar, the square of the momentum transferred between the incoming and outgoing target nucleus, is presented. The data were measured with the ALICE detector in ultra-peripheral Pb-Pbcollisions at a centre-of-mass energy per nucleon pair root s(NN) = 5.02 TeV with the J/Psi produced in the central rapidity region vertical bar y vertical bar < 0.8, which corresponds to the small Bjorken-xrange (0.3 - 1.4) x 10(-3). The measured vertical bar t vertical bar-dependence is not described by computations based only on the Pb nuclear form factor, while the photonuclear cross section is better reproduced by models including shadowing according to the leading-twist approximation, or gluon-saturation effects from the impact-parameter dependent Balitsky-Kovchegov equation. These new results are therefore a valid tool to constrain the relevant model parameters and to investigate the transverse gluonic structure at very low Bjorken- x. (C) 2021 The Author(s). Published by Elsevier B.V.

引用

页数：13

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