Measurement of Prompt D0, Λc+, and Σc0,++ (2455) Production in Proton-Proton Collisions at √s=13 TeV

被引：37

作者：

Acharya, S. ^{[156
]}

Adamova, D. ^{[110
]}

Adler, A. ^{[88
]}

Adolfsson, J. ^{[95
]}

Rinella, G. Aglieri ^{[47
]}

Agnello, M. ^{[31
,41
]}

Agrawal, N. ^{[67
]}

Ahammed, Z. ^{[156
]}

Ahmad, S. ^{[18
]}

Ahn, S. U. ^{[90
]}

Ahuja, I ^{[51
]}

Akbar, Z. ^{[64
]}

Akindinov, A. ^{[107
]}

Al-Turany, M. ^{[122
,123
]}

Alam, S. N. ^{[53
]}

Aleksandrov, D. ^{[103
]}

Alessandro, B. ^{[73
]}

Alfanda, H. M. ^{[8
]}

Alfaro Molina, R. ^{[85
]}

Ali, B. ^{[18
]}

Ali, Y. ^{[16
]}

Alici, A. ^{[32
,33
]}

Alizadehvandchali, N. ^{[140
]}

Alkin, A. ^{[47
]}

Alme, J. ^{[23
]}

Alt, T. ^{[82
]}

Altenkamper, L. ^{[23
]}

Altsybeev, I ^{[128
]}

Anaam, M. N. ^{[8
]}

Andrei, C. ^{[61
]}

Andreou, D. ^{[105
]}

Andronic, A. ^{[159
]}

Angeletti, M. ^{[47
]}

Anguelov, V ^{[119
]}

Antinori, F. ^{[70
]}

Antonioli, P. ^{[67
]}

Anuj, C. ^{[18
]}

Apadula, N. ^{[94
]}

Aphecetche, L. ^{[130
]}

Appelshaeuser, H. ^{[82
]}

Arcelli, S. ^{[32
,33
]}

Arnaldi, R. ^{[73
]}

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

Arslandok, M. ^{[119
,161
]}

Augustinus, A. ^{[47
]}

Averbeck, R. ^{[122
,123
]}

Aziz, S. ^{[92
]}

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

Badala, A. ^{[69
]}

Baek, Y. W. ^{[54
]}

机构：

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

[2] AGH Univ Sci & Technol, 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] Budker Inst Nucl Phys, Novosibirsk, Russia

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

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

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

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

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

[12] Chicago State Univ, Chicago, IL USA

[13] China Inst Atom Energy, Beijing, 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 Roma La Sapienza, Dipartimento Fis, Rome, Italy

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[40] Grp Collegato INFN, Salerno, Italy

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

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

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

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

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

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

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

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

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

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

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 128卷 / 01期

基金：

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

关键词：

PP COLLISIONS; INCLUSIVE PRODUCTION; E+E-ANNIHILATION; MESON PRODUCTION; CHARM; DECAYS; ALICE; D+;

D O I：

10.1103/PhysRevLett.128.012001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The p(T)-differential production cross sections of prompt D-0, Lambda(c)+, and Sigma(0,++)(c) (2455) charmed hadrons are measured at midrapidity (vertical bar y vertical bar < 0.5) in pp collisions at root s. = 13 TeV. This is the first measurement of Sigma(0,++)(c) production in hadronic collisions. Assuming the same production yield for the three Sigma(0,++)(c) isospin states, the baryon-to-meson cross section ratios Sigma(0,+,++)(c)/D-0 and Lambda(+)(c)/D-0 are calculated in the transverse momentum (p(T)) intervals 2 < p(T) < 12 and 1 < p(T) < 24 GeV/c. Values significantly larger than in e(+)e(-) collisions are observed, indicating for the first time that baryon enhancement in hadronic collisions also extends to the Sigma(c). The feed-down contribution to Lambda(+)(c) production from Sigma(0,+,++)(c) is also reported and is found to be larger than in e(+)e(-) collisions. The data are compared with predictions from event generators and other phenomenological models, providing a sensitive test of the different charm-hadronization mechanisms implemented in the models.

引用

页数：13

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