Measurement of electrons from beauty-hadron decays in pp and Pb-Pb collisions at √sNN=5.02 TeV

被引:3
作者
Acharya, S. [139 ]
Adamova, D. [97 ]
Adler, A. [80 ,154 ]
Rinella, G. Aglieri [43 ]
Agnello, M. [38 ,39 ]
Agrawal, N. [61 ]
Ahammed, Z. [146 ]
Ahmad, S. [17 ]
Ahn, S. U. [81 ]
Ahuja, I. [48 ]
Akindinov, A. [154 ]
Al-Turany, M. [110 ,111 ]
Aleksandrov, D. [154 ]
Alessandro, B. [66 ]
Alfanda, H. M. [7 ]
Alfaro Molina, R. [77 ]
Ali, B. [17 ]
Alici, A. [30 ,31 ]
Alizadehvandchali, N. [128 ]
Alkin, A. [43 ]
Alme, J. [22 ]
Alocco, G. [62 ]
Alt, T. [74 ]
Altsybeev, I. [154 ]
Anaam, M. N. [7 ]
Andrei, C. [56 ]
Andronic, A. [149 ]
Anguelov, V. [106 ]
Antinori, F. [64 ]
Antonioli, P. [61 ]
Apadula, N. [85 ]
Aphecetche, L. [117 ]
Appelshaeuser, H. [74 ]
Arata, C. [84 ]
Arcelli, S. [30 ,31 ]
Aresti, M. [62 ]
Arnaldi, R. [66 ]
Arneiro, J. G. M. C. A. [124 ]
Arsene, I. C. [21 ]
Arslandok, M. [151 ]
Augustinus, A. [43 ]
Averbeck, R. [110 ,111 ]
Azmi, M. D. [17 ]
Badala, A. [63 ]
Bae, J. [118 ]
Baek, Y. W. [51 ]
Bai, X. [132 ]
Bailhache, R. [74 ]
Bailung, Y. [58 ]
Balbino, A. [38 ,39 ]
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, Kolkata, India
[6] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, 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, DF, 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] Chungbuk Natl Univ, Cheongju, South Korea
[14] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia
[15] COMSATS Univ Islamabad, Islamabad, Pakistan
[16] Creighton Univ, Omaha, NE USA
[17] Aligarh Muslim Univ, Dept Phys, Aligarh, Uttar Pradesh, India
[18] Pusan Natl Univ, Dept Phys, Pusan, South Korea
[19] Sejong Univ, Dept Phys, Seoul, South Korea
[20] Univ Calif Berkeley, Dept Phys, Berkeley, CA USA
[21] Univ Oslo, Dept Phys, Oslo, Norway
[22] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[23] Univ Pavia, Dipartimento Fis, Pavia, Italy
[24] Univ Cagliari, Dipartimento Fis, Cagliari, Italy
[25] Sezione Ist Nazl Fis Nucl, Cagliari, Italy
[26] Univ Trieste, Dipartimento Fis, Trieste, Italy
[27] Sezione Ist Nazl Fis Nucl, Trieste, Italy
[28] Univ Turin, Dipartimento Fis, Turin, Italy
[29] Sezione Ist Nazl Fis Nucl, Turin, Italy
[30] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy
[31] Sezione Ist Nazl Fis Nucl, Bologna, Italy
[32] Univ Catania, Dipartimento Fis & Astron, Catania, Italy
[33] Sezione Ist Nazl Fis Nucl, Catania, Italy
[34] Univ Padua, Dipartimento Fis & Astron, Padua, Italy
[35] Sezione Ist Nazl Fis Nucl, Padua, Italy
[36] Univ Salerno, Dipartimento Fis ER Caianiello, Salerno, Italy
[37] Grp Coll INFN, Salerno, Italy
[38] Politecn Torino, Dipartimento DISAT, Turin, Italy
[39] Sezione Ist Nazl Fis Nucl, 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 Sci & Engn, 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
基金
日本学术振兴会; 欧洲研究理事会; 英国科学技术设施理事会; 美国能源部; 新加坡国家研究基金会; 瑞典研究理事会; 芬兰科学院;
关键词
QUARK-GLUON PLASMA; NON-PROMPT J/PSI; PROTON-PROTON COLLISIONS; HIGH TRANSVERSE-MOMENTUM; HEAVY-FLAVOR; ENERGY-LOSS; CROSS-SECTIONS; QCD; ROOT-S=7; MATTER;
D O I
10.1103/PhysRevC.108.034906
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 electrons from beauty-hadron decays was measured at midrapidity in proton-proton (pp) and central Pb-Pb collisions at center-of-mass energy per nucleon-nucleon pair root sNN = 5.02 TeV, using the ALICE detector at the LHC. The cross section measured in pp collisions in the transverse momentum interval 2 < pT < 8 GeV/c was compared with models based on perturbative quantum chromodynamics calculations. The yield in the 10% most central Pb-Pb collisions, measured in the interval 2 < pT < 26 GeV/c, was used to compute the nuclear modification factor R-AA, extrapolating the pp reference cross section to pT larger than 8 GeV/c. The measured RAA shows significant suppression of the yield of electrons from beauty-hadron decays at high pT and does not show a significant dependence above 8 GeV/c within uncertainties. The results are de-scribed by several theoretical models based on different implementations of the interaction of heavy quarks with a quark-gluon plasma, which predict a smaller energy loss for beauty quarks compared to light and charm quarks.
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