DS+ meson production at central rapidity in proton-proton collisions at √s=7 TeV

被引：75

作者：

Abelev, B. ^{[80
]}

Adam, J. ^{[45
]}

Adamova, D. ^{[85
]}

Adare, A. M. ^{[122
]}

Aggarwal, M. M. ^{[89
]}

Rinella, G. Aglieri ^{[41
]}

Agocs, A. G. ^{[72
]}

Agostinelli, A. ^{[22
,23
]}

Salazar, S. Aguilar ^{[68
]}

Ahammed, Z. ^{[118
]}

Ahmad, N. ^{[17
]}

Masoodi, A. Ahmad ^{[17
]}

Ahn, S. A. ^{[74
]}

Ahn, S. U. ^{[48
]}

Akindinov, A. ^{[58
,127
]}

Aleksandrov, D. ^{[100
]}

Alessandro, B. ^{[1
]}

Molina, R. Alfaro ^{[68
]}

Alici, A. ^{[12
]}

Alkin, A. ^{[3
,127
]}

Avina, E. Almaraz ^{[68
]}

Alme, J. ^{[43
]}

Alt, T. ^{[47
]}

Altini, V. ^{[39
]}

Altinpinar, S. ^{[18
]}

Altsybeev, I. ^{[119
]}

Andrei, C. ^{[82
]}

Andronic, A. ^{[97
]}

Anguelov, V. ^{[94
]}

Anielski, J. ^{[66
]}

Anson, C. ^{[19
]}

Anticic, T. ^{[98
]}

Antinori, F. ^{[26
]}

Antonioli, R. ^{[23
]}

Aphecetche, L. ^{[105
]}

Appelshaeuser, H. ^{[64
]}

Arbor, N. ^{[76
]}

Arcelli, S. ^{[22
,23
]}

Arend, A. ^{[127
]}

Armesto, N. ^{[15
,16
]}

Arnaldi, R. ^{[1
]}

Aronsson, T. ^{[122
]}

Arsene, I. C. ^{[97
]}

Arslandok, M. ^{[64
]}

Asryan, A. ^{[119
]}

Augustinus, A. ^{[41
,128
]}

Averbeck, R. ^{[97
]}

Awes, T. C. ^{[86
]}

Aeystoe, J. ^{[49
]}

Azmi, M. D. ^{[17
,91
]}

机构：

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

[2] Benemerita Univ Autonoma Puebla, Puebla, Mexico

[3] Bogolyubov Inst Theoret Phys, Kiev, Ukraine

[4] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

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

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

[7] Ctr Calcul IN2P3, Villeurbanne, France

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

[9] Ctr Invest Energet Medioambientales & Tecnol CIEM, Madrid, Spain

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

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

[12] Ctr Studi & Ric Museo Stor Fis Enrico Fermi, Ctr Fermi, Rome, Italy

[13] Chicago State Univ, Chicago, IL USA

[14] IRFU, Commissariat Energie Atom, Saclay, France

[15] Univ Santiago de Compostela, Dept Fis Particulas, Santiago De Compostela, Spain

[16] Univ Santiago de Compostela, IGFAE, Santiago De Compostela, Spain

[17] Aligarh Muslim Univ, Dept Phys, Aligarh 202002, Uttar Pradesh, India

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

[19] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

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

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

[22] Univ Bologna, Dipartmento Fis, Bologna, Italy

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

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

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

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

[27] Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy

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

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

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

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

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

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

[34] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

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

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

[37] Univ Salerno, Dipartimento Fis ER Caianiello, I-84100 Salerno, Italy

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

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

[40] Lund Univ, Div Expt High Energy Phys, Lund, Sweden

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

[42] Fachhsch Koln, Cologne, Germany

[43] Bergen Univ Coll, Fac Engn, Bergen, Norway

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

[45] Czech Tech Univ, Fac Nucl Sci & Phys Engn, CR-11519 Prague, Czech Republic

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

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

[48] Gangneung Wonju Natl Univ, Kangnung, South Korea

[49] Helsinki Inst Phys, Jyvaskyla, Finland

[50] Hiroshima Univ, Hiroshima, Japan

来源：

PHYSICS LETTERS B | 2012年 / 718卷 / 02期

基金：

欧洲研究理事会; 新加坡国家研究基金会; 巴西圣保罗研究基金会; 英国科学技术设施理事会; 芬兰科学院; 美国国家科学基金会; 美国能源部; 瑞典研究理事会;

关键词：

THERMAL HADRON-PRODUCTION; STATISTICAL HADRONIZATION; INCLUSIVE PRODUCTION; CHARM PRODUCTION; B-DECAYS; HEAVY; FRAGMENTATION; QUARKS; PP; D+;

D O I：

10.1016/j.physletb.2012.10.049

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The P-T-differential inclusive production cross section of the prompt charm-strange meson D-s(+) in the rapidity range vertical bar y vertical bar < 0.5 was measured in proton-proton collisions at root s = 7 TeV at the LHC using the ALICE detector. The analysis was performed on a data sample of 2.98 x 10(8) events collected with a minimum-bias trigger. The corresponding integrated luminosity is L-int = 4.8 nb(-1). Reconstructing the decay D-s(+) -> phi pi(+) with phi -> K-K+, and its charge conjugate, about 480 D-s(+/-) mesons were counted, after selection cuts, in the transverse momentum range 2 < P-T < 12 GeV/c. The results are compared with predictions from models based on perturbative QCD. The ratios of the cross sections of four D meson species (namely D-0, D+, D*+ and D-s(+)) were determined both as a function of p(T) and integrated over p(T)after extrapolating to full p(T) range, together with the strangeness suppression factor in charm fragmentation. The obtained values are found to be compatible within uncertainties with those measured by other experiments in e(+)e(-), ep and pp interactions at various centre-of-mass energies. (C) 2012 CERN. Published by Elsevier By. All rights reserved.

引用

页码：279 / 294

页数：16

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