Measurement of electrons from beauty hadron decays in pp collisions at √s=7 TeV

被引：70

作者：

Abelev, B. ^{[82
]}

Adam, J. ^{[46
]}

Adamova, D. ^{[87
]}

Adare, A. M. ^{[125
]}

Aggarwal, M. M. ^{[91
]}

Rinella, G. Aglieri ^{[42
]}

Agocs, A. G. ^{[74
]}

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

Salazar, S. Aguilar ^{[70
]}

Ahammed, Z. ^{[121
]}

Ahmad, N. ^{[17
]}

Masoodi, A. Ahmad ^{[17
]}

Ahn, S. A. ^{[76
]}

Ahn, S. U. ^{[49
]}

Akindinov, A. ^{[60
]}

Aleksandrov, D. ^{[103
]}

Alessandro, B. ^{[31
]}

Alfaro Molina, R. ^{[70
]}

Alici, A. ^{[11
,12
,23
]}

Alkin, A. ^{[2
]}

Almaraz Avina, E. ^{[70
]}

Alme, J. ^{[44
]}

Alt, T. ^{[48
]}

Altini, V. ^{[39
,40
]}

Altinpinar, S. ^{[18
]}

Altsybeev, I. ^{[122
]}

Andrei, C. ^{[84
]}

Andronic, A. ^{[99
,100
]}

Anguelov, V. ^{[96
]}

Anielski, J. ^{[68
]}

Anson, C. ^{[19
]}

Anticic, T. ^{[101
]}

Antinori, F. ^{[25
]}

Antonioli, P. ^{[23
]}

Aphecetche, L. ^{[108
]}

Appelshaeuser, H. ^{[66
]}

Arbor, N. ^{[78
]}

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

Arend, A. ^{[66
]}

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

Arnaldi, R. ^{[31
]}

Aronsson, T. ^{[125
]}

Arsene, I. C. ^{[99
,100
]}

Arslandok, M. ^{[66
]}

Asryan, A. ^{[122
]}

Augustinus, A. ^{[42
]}

Averbeck, R. ^{[99
,100
]}

Awes, T. C. ^{[88
]}

Aysto, J. ^{[50
,51
]}

Azmi, M. D. ^{[17
,93
]}

机构：

[1] Benemerita Univ Autonoma Puebla, Puebla, Mexico

[2] Bogolyubov Inst Theoret Phys, Kiev, Ukraine

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

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

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

[6] Ctr Calcul IN2P3, Villeurbanne, France

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

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

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

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

[11] Ctr Fermi Ctr Studi & Ric, Rome, Italy

[12] Museo Stor Fis Enrico 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] Univ Padua, Dipartimento Fis, Padua, Italy

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

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

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

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

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

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

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

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

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

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

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

[36] Grp Coll INFN, Salerno, Italy

[37] Univ Piemonte Orientate, Dipartimento Sci & Innovaz Tecnol, Alessandria, Italy

[38] Gruppo Coll INFN, Alessandria, Italy

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

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

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

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

[43] Fachhsch Koln, Cologne, Germany

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

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

[46] Czech Tech Univ, Fac Nucl Sci & Phys Engn, CR-16635 Prague, Czech Republic

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

[48] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, D-60054 Frankfurt, Germany

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

[50] HIP, Jyvaskyla, Finland

来源：

PHYSICS LETTERS B | 2013年 / 721卷 / 1-3期

基金：

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

关键词：

LHC; ALICE experiment; pp collisions; Single electrons; Heavy flavor production; Beauty production; PROTON-PROTON COLLISIONS; MESON PRODUCTION; RAPIDITY;

D O I：

10.1016/j.physletb.2013.01.069

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The production cross section of electrons from semileptonic decays of beauty hadrons was measured at mid-rapidity (vertical bar y vertical bar < 0.8) in, the transverse momentum range 1 < p(T) < 8 GeV/c with the ALICE experiment at the CERN LHC in pp collisions at a center of mass energy root s = 7 TeV using an integrated luminosity of 2.2 nb(-1). Electrons from beauty hadron decays were selected based on the displacement of the decay vertex from the collision vertex. A perturbative QCD calculation agrees with the measurement within uncertainties. The data were extrapolated to the full phase space to determine the total cross section for the production of beauty quark-antiquark pairs. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.

引用

页码：13 / 23

页数：11

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