Prompt and non-prompt J/ψ production cross sections at midrapidity in proton-proton collisions at √s=5.02 and 13 TeV

被引：0

作者：

Acharya, S. ^{[161
]}

Adamova, D. ^{[116
]}

Adler, A. ^{[94
]}

Rinella, G. Aglieri ^{[53
]}

Agnello, M. ^{[37
,47
]}

Agrawal, N. ^{[73
]}

Ahammed, Z. ^{[161
]}

Ahmad, S. ^{[24
]}

Ahn, S. U. ^{[96
]}

Ahuja, I ^{[57
]}

Akbar, Z. ^{[70
]}

Akindinov, A. ^{[113
]}

Al-Turany, M. ^{[128
,129
]}

Alam, S. N. ^{[24
,59
]}

Aleksandrov, D. ^{[109
]}

Alessandro, B. ^{[79
]}

Alfanda, H. M. ^{[14
]}

Alfaro Molina, R. ^{[91
]}

Ali, B. ^{[24
]}

Ali, Y. ^{[22
]}

Alici, A. ^{[38
,39
]}

Alizadehvandchali, N. ^{[146
]}

Alkin, A. ^{[53
]}

Alme, J. ^{[29
]}

Alt, T. ^{[88
]}

Altenkamper, L. ^{[29
]}

Altsybeev, I ^{[134
]}

Anaam, M. N. ^{[14
]}

Andrei, C. ^{[67
]}

Andreou, D. ^{[111
]}

Andronic, A. ^{[164
]}

Angeletti, M. ^{[53
]}

Anguelov, V ^{[125
]}

Antinori, F. ^{[76
]}

Antonioli, P. ^{[73
]}

Anuj, C. ^{[24
]}

Apadula, N. ^{[100
]}

Aphecetche, L. ^{[136
]}

Appelshaeuser, H. ^{[88
]}

Arcelli, S. ^{[38
,39
]}

Arnaldi, R. ^{[79
]}

Arsene, I. C. ^{[28
]}

Arslandok, M. ^{[125
,166
]}

Augustinus, A. ^{[53
]}

Averbeck, R. ^{[128
,129
]}

Aziz, S. ^{[98
]}

Azmi, M. D. ^{[24
]}

Badala, A. ^{[75
]}

Baek, Y. W. ^{[60
]}

Bai, X. ^{[128
,129
,149
]}

机构：

[1] Italian Natl Agcy New Technol Energy & Sustainabl, Bologna, Italy

[2] Politecn Torino, Dipartimento DET, Turin, Italy

[3] Moscow MV Lomonosov State Univ, DV Skobeltsyn Inst Nucl Phys, Moscow, Russia

[4] Aligarh Muslim Univ, Dept Appl Phys, Aligarh, Uttar Pradesh, India

[5] Univ Wroclaw, Inst Theoret Phys, Wroclaw, Poland

[6] Univ Kansas, Lawrence, KS USA

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

[8] AGH Univ Sci & Technol, Krakow, Poland

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

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

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

[12] Budker Inst Nucl Phys, Novosibirsk, Russia

[13] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA

[14] Cent China Normal Univ, Wuhan, Peoples R China

[15] Ctr Aplicac Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba

[16] CINVESTAV, Ctr Invest & Estudios Avanzados, Mexico City, DF, Mexico

[17] CINVESTAV, Ctr Invest & Estudios Avanzados, Merida, Mexico

[18] Chicago State Univ, Chicago, IL USA

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

[20] Chungbuk Natl Univ, Cheongju, South Korea

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

[22] COMSATS Univ Islamabad, Islamabad, Pakistan

[23] Creighton Univ, Omaha, NE 68178 USA

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[44] Univ Pavia, Dipartimento Fis & Nucl & Teor, Pavia, Italy

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

[46] Grp Collegato INFN, Salerno, Italy

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

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

[49] Ist Nazl Fis Nucl, Sez Torino, Alessandria, Italy

[50] Univ Messina, Dipartimento Sci MIFT, Messina, Italy

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2022年 / 03期

基金：

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

关键词：

Hadron-Hadron Scattering; QUARKONIUM PRODUCTION; HEAVY; HADROPRODUCTION;

D O I：

10.1007/JHEP03(2022)190

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 of J/psi is measured at midrapidity (vertical bar y vertical bar < 0.9) in proton-proton collisions at root s = 5.02 and 13 TeV, through the dielectron decay channel, using the ALICE detector at the Large Hadron Collider. The data sets used for the analyses correspond to integrated luminosities of L-int = 19.4 +/- 0.4 nb(-1) and L-int = 32.2 +/- 0.5 nb(-1) at root s = 5.02 and 13 TeV, respectively. The fraction of non-prompt J/psi mesons, i.e. those originating from the decay of beauty hadrons, is measured down to a transverse momentum p(T) = 2 GeV/c (1GeV/c) at root s = 5.02 TeV (13 TeV). The p(T) and rapidity (y) differential cross sections, as well as the corresponding values integrated over p(T) and y, are carried out separately for prompt and non-prompt J/psi mesons. The results are compared with measurements from other experiments and theoretical calculations based on quantum chromodynamics (QCD). The shapes of the p(T) and y distributions of beauty quarks predicted by state-of-the-art perturbative QCD models are used to extrapolate an estimate of the b (b) over bar pair cross section at midrapidity and in the total phase space. The total b (b) over bar cross sections are found to be sigma(b (b) over bar) = 541 +/- 45 (stat.) +/- 69 (syst.)(-12)(+10) (extr.) mu b and sigma(b (b) over bar) = 218 +/- 37 (stat.)+/- 31 (syst.)(-9.1)(+8.2) (extr.) mu b at root s = 13 and 5.02 TeV, respectively. The value obtained from the combination of ALICE and LHCb measurements in pp collisions at root s = 13 TeV is also provided.

引用

页数：35

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