Charged jet cross sections and properties in proton-proton collisions at √s=7 TeV

被引:29
作者
Abelev, B. [83 ]
Adam, J. [49 ]
Adamova, D. [91 ]
Aggarwal, M. M. [95 ]
Rinella, G. Aglieri [46 ]
Agnello, M. [102 ,120 ]
Agostinelli, A. [33 ,34 ]
Agrawal, N. [56 ]
Ahammed, Z. [139 ]
Ahmad, N. [21 ]
Ahmed, I. [17 ]
Ahn, S. U. [76 ]
Ahn, S. A. [76 ]
Aimo, I. [102 ,120 ]
Aiola, S. [144 ]
Ajaz, M. [17 ]
Akindinov, A. [66 ]
Alam, S. N. [139 ]
Aleksandrov, D. [109 ]
Alessandro, B. [120 ]
Alexandre, D. [111 ]
Alici, A. [13 ,14 ,114 ]
Alkin, A. [3 ]
Alme, J. [47 ]
Alt, T. [51 ]
Altinpinar, S. [20 ]
Altsybeev, I. [138 ]
Garcia Prado, C. Alves [128 ]
Andrei, C. [86 ]
Andronic, A. [105 ,106 ]
Anguelov, V. [101 ]
Anielski, J. [62 ]
Anticic, T. [107 ]
Antinori, F. [117 ]
Antonioli, P. [114 ]
Aphecetche, L. [122 ]
Appelshaeuser, H. [61 ]
Arcelli, S. [33 ,34 ]
Armesto, N. [18 ,19 ]
Arnaldi, R. [120 ]
Aronsson, T. [144 ]
Arsene, I. C. [24 ,105 ,106 ]
Arslandok, M. [61 ]
Augustinus, A. [46 ]
Averbeck, R. [105 ,106 ]
Awes, T. C. [92 ]
Azmi, M. D. [21 ,97 ]
Bach, M. [51 ]
Badala, A. [116 ]
Baek, Y. W. [52 ,78 ]
机构
[1] Yerevan Phys Inst, Fdn, AI Alikhanyan Natl Sci Lab, Yerevan 375036, Armenia
[2] Benemerita Univ Autonoma Puebla, Puebla, Mexico
[3] Bogolyubov Inst Theoret Phys, Kiev, Ukraine
[4] Bose Inst, Dept Phys, Kolkata, India
[5] CAPSS, Kolkata, India
[6] Budker Inst Nucl Phys, Novosibirsk 630090, 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 Calcul IN2P3, Villeurbanne, France
[10] Ctr Aplicaciones Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba
[11] CIEMAT, E-28040 Madrid, Spain
[12] CINVESTAV, Ctr Invest & Estudios Avanzados, Mexico City 14000, DF, Mexico
[13] Ctr Fermi Museo Storico Fis, Rome, Italy
[14] Ctr Studi & Ric Enrico Fermi, Rome, Italy
[15] Calif State Univ Chico, Chicago, IL USA
[16] CEA, IRFU, Saclay, France
[17] COMSATS Inst Informat Technol CIIT, Islamabad, Pakistan
[18] Univ Santiago Compostela, Dept Fis Particulas, Santiago De Compostela, Spain
[19] Univ Santiago Compostela, IGFAE, Santiago De Compostela, Spain
[20] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[21] Aligarh Muslim Univ, Dept Phys, Aligarh 202002, Uttar Pradesh, India
[22] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
[23] Sejong Univ, Dept Phys, Seoul, South Korea
[24] Univ Oslo, Dept Phys, Oslo, Norway
[25] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[26] Sezione Ist Nazl Fis Nucl, Rome, Italy
[27] Univ Calgary, Dipartimento Fis, Cagliari, Italy
[28] Sezione Ist Nazl Fis Nucl, Cagliari, Italy
[29] Univ Trieste, Dipartimento Fis, Trieste, Italy
[30] Sezione Ist Nazl Fis Nucl, Trieste, Italy
[31] Univ Turin, Dipartimento Fis, Turin, Italy
[32] Sezione Ist Nazl Fis Nucl, Turin, Italy
[33] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy
[34] Sezione Ist Nazl Fis Nucl, Bologna, Italy
[35] Univ Catania, Dipartimento Fis & Astron, Catania, Italy
[36] Sezione Ist Nazl Fis Nucl, Catania, Italy
[37] Univ Padua, Dipartimento Fis & Astron, Padua, Italy
[38] Sezione Ist Nazl Fis Nucl, Padua, Italy
[39] ER Caianiello Univ, Dipartimento Fis, Salerno, Italy
[40] INFN, Grp Collegato, Salerno, Italy
[41] Univ Piemonte Orientale, Dipartimento Sci & Innovaz Tecnol, Alessandria, Italy
[42] Grp Collegato INFN, Alessandria, Italy
[43] M Merlin & Sez INFN, Dipartimento Interateneo Fis, Bari, Italy
[44] Lund Univ, Div Expt High Energy Phys, Lund, Sweden
[45] Univ Tubingen, Tubingen, Germany
[46] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland
[47] Bergen Univ Coll, Fac Engn, Bergen, Norway
[48] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia
[49] Czech Tech Univ, Fac Nucl Sci & Phys Engn, CR-16635 Prague, Czech Republic
[50] Safarik Univ, Fac Sci, Kosice, Slovakia
基金
新加坡国家研究基金会; 巴西圣保罗研究基金会; 瑞典研究理事会; 英国科学技术设施理事会; 美国能源部; 欧洲研究理事会; 美国国家科学基金会; 芬兰科学院; 俄罗斯基础研究基金会; 中国国家自然科学基金;
关键词
(P)OVER-BAR-P COLLISIONS; P(P)OVER-BAR COLLISIONS; PP COLLISIONS; PARTON DISTRIBUTIONS; TRANSVERSE-MOMENTUM; SHAPES; ALGORITHM; ENERGY;
D O I
10.1103/PhysRevD.91.112012
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The differential charged jet cross sections, jet fragmentation distributions, and jet shapes are measured in minimum bias proton-proton collisions at center-of-mass energy root s = 7 TeV using the ALICE detector at the LHC. Jets are reconstructed from charged particle momenta in the midrapidity region using the sequential recombination k(T) and anti-k(T) as well as the SISCone jet finding algorithms with several resolution parameters in the range R = 0.2-0.6. Differential jet production cross sections measured with the three jet finders are in agreement in the transverse momentum (p(T)) interval 20 < p(T)(jet,ch) < 100 GeV/c. They are also consistent with prior measurements carried out at the LHC by the ATLAS Collaboration. The jet charged particle multiplicity rises monotonically with increasing jet p(T), in qualitative agreement with prior observations at lower energies. The transverse profiles of leading jets are investigated using radial momentum density distributions as well as distributions of the average radius containing 80% (< R-80 >) of the reconstructed jet p(T). The fragmentation of leading jets with R = 0.4 using scaled p(T) spectra of the jet constituents is studied. The measurements are compared to model calculations from event generators (PYTHIA, PHOJET, HERWIG). The measured radial density distributions and < R-80 > distributions are well described by the PYTHIA model (tune Perugia-2011). The fragmentation distributions are better described by HERWIG.
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页数:33
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