Measurement of beauty-quark production in pp collisions at √s=13 TeV via non-prompt D mesons

被引：0

作者：

Acharya, S. ^{[140
]}

Adamova, D. ^{[97
]}

Agarwal, A. ^{[148
]}

Rinella, G. Aglieri ^{[43
]}

Aglietta, L. ^{[29
,30
]}

Agnello, M. ^{[30
,39
]}

Agrawal, N. ^{[31
,32
]}

Ahammed, Z. ^{[148
]}

Ahmad, S. ^{[18
]}

Ahn, S. U. ^{[82
]}

Ahuja, I. ^{[48
]}

Akindinov, A. ^{[154
]}

Akishina, V. ^{[49
]}

Al-Turany, M. ^{[109
,110
]}

Aleksandrov, D. ^{[154
]}

Alessandro, B. ^{[67
]}

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

Alfaro Molina, R. ^{[78
]}

Ali, B. ^{[18
]}

Alici, A. ^{[31
,32
]}

Alizadehvandchali, N. ^{[129
]}

Alkin, A. ^{[117
]}

Alme, J. ^{[23
]}

Alocco, G. ^{[63
]}

Alt, T. ^{[75
]}

Altamura, A. R. ^{[61
]}

Altsybeev, I. ^{[107
]}

Alvarado, J. R. ^{[55
]}

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

Andrei, C. ^{[56
]}

Andreou, N. ^{[128
]}

Andronic, A. ^{[139
]}

Andronov, E. ^{[154
]}

Anguelov, V. ^{[106
]}

Antinori, F. ^{[65
]}

Antonioli, P. ^{[62
]}

Apadula, N. ^{[85
]}

Aphecetche, L. ^{[116
]}

Appelshaeuser, H. ^{[75
]}

Arata, C. ^{[84
]}

Arcelli, S. ^{[31
,32
]}

Aresti, M. ^{[25
,26
]}

Arnaldi, R. ^{[67
]}

Arneiro, J. G. M. C. A. ^{[123
]}

Arsene, I. C. ^{[22
]}

Arslandok, M. ^{[151
]}

Augustinus, A. ^{[43
]}

Averbeck, R. ^{[109
,110
]}

Azmi, M. D. ^{[18
]}

Baba, H. ^{[137
]}

机构：

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

[2] AGH Univ Krakow, Krakow, Poland

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

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

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

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

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

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

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

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

[11] Chicago State Univ, Chicago, IL USA

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

[13] China Univ Geosci, Wuhan, Peoples R China

[14] Chungbuk Natl Univ, Cheongju, South Korea

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

[16] COMSATS Univ Islamabad, Islamabad, Pakistan

[17] Creighton Univ, Omaha, NE 68178 USA

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

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

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

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

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

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

[24] Univ Pavia, Dipartimento Fis, Pavia, Italy

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

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

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

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

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

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

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

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

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

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

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

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

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

[38] Grp Collegato INFN, Salerno, Italy

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

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

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

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

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

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

[45] Western Norway Univ Appl Sci, Fac Engn & Sci, Bergen, Norway

[46] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Prague, Czech Republic

[47] Sofia Univ, Fac Phys, Sofia, Bulgaria

[48] Safarik Univ, Fac Sci, Kosice, Slovakia

[49] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, Frankfurt, Germany

[50] Fudan Univ, Shanghai, Peoples R China

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2024年 / 10期

基金：

欧洲研究理事会; 芬兰科学院; 瑞典研究理事会; 巴西圣保罗研究基金会; 日本学术振兴会; 中国国家自然科学基金; 美国能源部; 奥地利科学基金会; 新加坡国家研究基金会;

关键词：

Hadron-Hadron Scattering; Heavy Quark Production; QCD;

D O I：

10.1007/JHEP10(2024)110

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 p(T)-differential production cross sections of non-prompt D-0, D+, and D+ s mesons originating from beauty-hadron decays are measured in proton-proton collisions at a centre-of-mass energy root s = 13TeV. The measurements are performed at midrapidity, |y| < 0.5, with the data sample collected by ALICE from 2016 to 2018. The results are in agreement with predictions from several perturbative QCD calculations. The fragmentation fraction of beauty quarks to strange mesons divided by the one to non-strange mesons, f(s)/(f(u)+ f(d)), is found to be 0.114 +/- 0.016 (stat.) +/- 0.006 (syst.) +/- 0.003 (BR) +/- 0.003 (extrap.). This value is compatible with previous measurements at lower centre-of-mass energies and in different collision systems in agreement with the assumption of universality of fragmentation functions. In addition, the dependence of the non-prompt D meson production on the centre-of-mass energy is investigated by comparing the results obtained at root s = 5.02 and 13TeV, showing a hardening of the non-prompt D-meson pT-differential production cross section at higher vs. Finally, the bb production cross section per unit of rapidity at midrapidity is calculated from the non-prompt D-0, D+, D-s(+), and Lambda(+)(c) hadron measurements, obtaining d sigma/dy = 75.2 +/- 3.2 ( stat.) +/- 5.2 (syst.)(-3.2)(+12.3) (extrap.) mu b.

引用

页数：34

共 50 条

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