Study of flavor dependence of the baryon-to-meson ratio in proton-proton collisions at √s=13 TeV

被引：5

作者：

Acharya, S. ^{[142
]}

Adamova, D. ^{[98
]}

Rinella, G. Aglieri ^{[30
,39
]}

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

Agrawal, N. ^{[63
]}

Ahammed, Z. ^{[150
]}

Ahmad, S. ^{[18
]}

Ahn, S. U. ^{[83
]}

Ahuja, I. ^{[48
]}

Akindinov, A. ^{[156
]}

Al-Turany, M. ^{[111
,112
]}

Aleksandrov, D. ^{[156
]}

Alessandro, B. ^{[68
]}

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

Molina, R. Alfaro ^{[79
]}

Ali, B. ^{[18
]}

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

Alizadehvandchali, N. ^{[131
]}

Alkin, A. ^{[43
]}

Alme, J. ^{[23
]}

Alocco, G. ^{[64
]}

Alt, T. ^{[76
]}

Altamura, A. R. ^{[62
]}

Altsybeev, I. ^{[109
]}

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

Andrei, C. ^{[56
]}

Andreou, N. ^{[130
]}

Andronic, A. ^{[141
]}

Anguelov, V. ^{[107
,108
]}

Antinori, F. ^{[66
]}

Antonioli, P. ^{[63
]}

Apadula, N. ^{[86
]}

Aphecetche, L. ^{[118
]}

Appelshaeuser, H. ^{[76
]}

Arata, C. ^{[85
]}

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

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

Arnaldi, R. ^{[68
]}

Arneiro, J. G. M. C. A. ^{[125
]}

Arsene, I. C.

Arslandok, M. ^{[153
]}

Augustinus, A. ^{[43
]}

Averbeck, R. ^{[111
,112
]}

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

Baba, H. ^{[139
]}

Badala, A. ^{[65
]}

Bae, J. ^{[119
]}

Baek, Y. W. ^{[51
]}

Bai, X. ^{[135
]}

Bailhache, R. ^{[76
]}

机构：

[1] AI Alikhanyan Natl Sci Lab Yerevan Phys Inst Fdn, 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] Ctr Astroparticle Phys & Space Sci CAPSS, Kolkata, India

[6] Calif State Polytech Univ Pomona, Pomona, CA 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, 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 USA

[18] Aligarh Muslim Univ, Dept Phys, Aligarh, 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 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 Coll 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：

PHYSICAL REVIEW D | 2023年 / 108卷 / 11期

基金：

欧洲研究理事会; 新加坡国家研究基金会; 美国能源部; 日本学术振兴会; 瑞典研究理事会; 英国科学技术设施理事会; 芬兰科学院;

关键词：

PP COLLISIONS; PBPB COLLISIONS; CROSS-SECTIONS; FRAGMENTATION; HADRONS; D-0;

D O I：

10.1103/PhysRevD.108.112003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The production cross sections of D-0 and Lambda(+)(c) hadrons originating from beauty-hadron decays (i.e., nonprompt) were measured for the first time at midrapidity (|y| < 0.5) by the ALICE Collaboration in proton-proton collisions at a center-of-mass energy root s = 13 TeV. They are described within uncertainties by perturbative QCD calculations employing the fragmentation fractions of beauty quarks to baryons measured at forward rapidity by the LHCb Collaboration. The bb production cross section per unit of rapidity at midrapidity, estimated from these measurements, is d sigma(bb)/dy|(|y|<0.5 )= 83.1 +/- 3.5(stat) +/- 5.4(syst)(-3.2)(+12.3) (extrap) mu b. The baryon-to-meson ratios are computed to investigate the hadronization mechanism of beauty quarks. The nonprompt Lambda(+)(c)/D-0 production ratio has a similar trend to the one measured for the promptly produced charmed particles and to the p/pi(+) and Lambda/K-S(0) ratios, suggesting a similar baryon-formation mechanism among light, strange, charm, and beauty hadrons. The p(T) -integrated nonprompt Lambda(+)(c)/D-0 ratio is found to be significantly higher than the one measured in e(+)e(-) collisions.

引用

页数：19

共 50 条

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