First measurement of Λc+ production down to pT=0 in pp and p-Pb collisions at √sNN=5.02 TeV

被引：7

作者：

Acharya, S. ^{[155
]}

Adamova, D. ^{[107
]}

Adler, A. ^{[87
]}

Adolfsson, J. ^{[93
]}

Aggarwal, M. M. ^{[112
]}

Rinella, G. Aglieri ^{[46
]}

Agnello, M. ^{[40
,41
]}

Agrawal, N. ^{[12
,66
]}

Ahammed, Z. ^{[155
]}

Ahmad, S. ^{[18
]}

Ahn, S. U. ^{[89
]}

Akindinov, A. ^{[104
]}

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

Alam, S. N. ^{[155
]}

Albuquerque, D. S. D. ^{[136
]}

Aleksandrov, D. ^{[100
]}

Alessandro, B. ^{[71
]}

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

Alfaro Molina, R. ^{[84
]}

Ali, B. ^{[18
]}

Ali, Y. ^{[16
]}

Alici, A. ^{[12
,32
,33
,66
]}

Alkin, A. ^{[2
]}

Alme, J. ^{[23
]}

Alt, T. ^{[81
]}

Altenkamper, L. ^{[23
]}

Altsybeev, I. ^{[126
]}

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

Andrei, C. ^{[60
]}

Andreou, D. ^{[46
]}

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

Andronic, A. ^{[158
]}

Angeletti, M. ^{[46
]}

Anguelov, V. ^{[116
]}

Anson, C. ^{[17
]}

Anticic, T. ^{[121
]}

Antinori, F. ^{[69
]}

Antonioli, P. ^{[66
]}

Anwar, R. ^{[139
]}

Apadula, N. ^{[92
]}

Aphecetche, L. ^{[128
]}

Appelshaeuser, H. ^{[81
]}

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

Arnaldi, R. ^{[71
]}

Arratia, M. ^{[92
]}

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

Arslandok, M. ^{[116
]}

Augustinus, A. ^{[46
]}

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

Aziz, S. ^{[74
]}

机构：

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

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

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

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

[5] Budker Inst Nucl Phys, Novosibirsk, Russia

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

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

[8] IN2P3, Ctr Calcul, Villeurbanne, France

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

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

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

[12] Ctr Fermi Museo Storico Fis & Ctr Studi & Ricerch, Rome, Italy

[13] Chicago State Univ, Chicago, IL USA

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

[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 Salerno, Dipartimento Fis ER Caianiello, Salerno, Italy

[39] Grp Collegato INFN, Salerno, Italy

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

[41] Sezi INFN, Turin, Italy

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

[43] INFN, Sez Torino, Alessandria, Italy

[44] Dipartimento Interateneo & Fis M Merlin, Bari, Italy

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

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

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

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

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

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

来源：

PHYSICAL REVIEW C | 2023年 / 107卷 / 06期

基金：

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

关键词：

PROTON-PROTON; CHARGED-PARTICLES; MESON PRODUCTION; RAPIDITY; HADRONS; PION;

D O I：

10.1103/PhysRevC.107.064901

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The production of prompt Lambda(+)(c) baryons has been measured at midrapidity in the transverse momentum interval 0 < pT < 1 GeV/c for the first time, in pp and p-Pb collisions at a center-of-mass energy per nucleon-nucleon collision root s(NN) = 5.02 TeV. The measurement was performed in the decay channel Lambda(+)(c) . pK0 S by applying new decay reconstruction techniques using a Kalman-Filter vertexing algorithm and adopting a machine-learning approach for the candidate selection. The pT -integrated Lambda(+)(c) production cross sections in both collision systems were determined and used along with the measured yields in Pb-Pb collisions to compute the pT -integrated nuclear modification factors RpPb and RAA of Lambda(+)(c) baryons, which are compared to model calculations that consider nuclear modification of the parton distribution functions. The Lambda(+)(c) /D0 baryon-to-meson yield ratio is reported for pp and p-Pb collisions. Comparisons with models that include modified hadronization processes are presented, and the implications of the results on the understanding of charm hadronization in hadronic collisions are discussed. A significant (3.7s) modification of the mean transverse momentum of Lambda(+)(c) baryons is seen in p-Pb collisions with respect to pp collisions, while the pT -integrated Lambda(+)(c) /D0 yield ratio was found to be consistent between the two collision systems within the uncertainties.

引用

页数：19

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