Λc+ production in pp collisions at √s=7 TeV and in p-Pb collisions at √sNN=5.02 TeV

被引：0

作者：

Acharya, S. ^{[155
]}

Acosta, F. T. ^{[28
]}

Adamova, D. ^{[110
]}

Adolfsson, J. ^{[97
]}

Aggarwal, M. M. ^{[114
]}

Rinella, G. Aglieri ^{[52
]}

Agnello, M. ^{[38
,47
]}

Agrawal, N. ^{[64
]}

Ahammed, Z. ^{[155
]}

Ahn, S. U. ^{[93
]}

Aiola, S. ^{[160
]}

Akindinov, A. ^{[80
]}

Al-Turany, M. ^{[120
,121
]}

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

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

Aleksandrov, D. ^{[104
]}

Alessandro, B. ^{[74
]}

Alfaro Molina, R. ^{[88
]}

Ali, Y. ^{[22
]}

Alici, A. ^{[17
,39
,40
,69
]}

Alkin, A. ^{[7
]}

Alme, J. ^{[30
]}

Alt, T. ^{[85
]}

Altenkamper, L. ^{[30
]}

Altsybeev, I ^{[154
]}

Andrei, C. ^{[63
]}

Andreou, D. ^{[52
]}

Andrews, H. A. ^{[125
]}

Andronic, A. ^{[120
,121
]}

Angeletti, M. ^{[52
]}

Anguelov, V ^{[118
]}

Anson, C. ^{[23
]}

Anticic, T. ^{[122
]}

Antinori, F. ^{[72
]}

Antonioli, P. ^{[69
]}

Apadula, N. ^{[96
]}

Aphecetche, L. ^{[128
]}

Appelshaeuser, H. ^{[85
]}

Arcelli, S. ^{[39
,40
]}

Arnaldi, R. ^{[74
]}

Arnold, O. W. ^{[119
,131
]}

Arsene, I. C. ^{[29
]}

Arslandok, M. ^{[118
]}

Audurier, B. ^{[128
]}

Augustinus, A. ^{[52
]}

Averbeck, R. ^{[120
,121
]}

Azmi, M. D. ^{[24
]}

Badala, A. ^{[71
]}

Baek, Y. W. ^{[76
,92
]}

Bagnasco, S. ^{[74
]}

机构：

[1] Politecn Torino, Dipartimento DET, Turin, Italy

[2] Moscow MV Lomonosov State Univ, DV Skobeltsyn Inst Nucl, Moscow, Russia

[3] Aligarh Muslim Univ, Dept Appl Phys, Aligarh, Uttar Pradesh, India

[4] Univ Wroclaw, Inst Theoret Phys, Wroclaw, Poland

[5] Yerevan Phys Inst Fdn, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia

[6] Benemerita Univ Autonoma Puebla, Puebla, Mexico

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

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

[9] CAPSS, Kolkata, India

[10] Budker Inst Nucl Phys, Novosibirsk, Russia

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

[12] Cent China Normal Univ, Wuhan, Hubei, Peoples R China

[13] IN2P3, Ctr Calcul, Lyon, France

[14] Ctr Aplicaciones Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba

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

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

[17] Museo Storico Fis & Ctr Studi & Ric Enr Fermi, Ctr Fermi, Rome, Italy

[18] Calif State Univ, Chicago, IL USA

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

[20] Chonbuk Natl Univ, Jeonju, South Korea

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

[22] CIIT Ctr Hlth Res, Islamabad, Pakistan

[23] Creighton Univ, Omaha, NE 68178 USA

[24] Aligarh Muslim Univ, Dept Phys, Aligarh, Uttar Pradesh, India

[25] Ohio State Univ, Dept Phys, 174 W 18th Ave, Columbus, OH 43210 USA

[26] Pusan Natl Univ, Dept Phys, Pusan, South Korea

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

[28] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

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

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

[31] Univ Roma La Sapienza, Dipartimento Fis, Rome, Italy

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

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

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

[35] Univ Trieste, Dipartimento Fis, Trieste, Italy

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

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

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

[39] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy

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

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

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

[43] Univ Padua, Dipartimento Fis & Astron, Padua, Italy

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

[45] Univ Salerno, Dipartimento Fis ER Caianiello, Salerno, Italy

[46] INFN, Grp Collegato, Salerno, Italy

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

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

[49] INFN, Sez Torino, Alessandria, Italy

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

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2018年 / 04期

基金：

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

关键词：

Heavy Ion Experiments; Quark gluon plasma; PROTON-PROTON; HEAVY-FLAVOR; MATRIX-ELEMENT; HELAC-ONIA; FRAGMENTATION; ANNIHILATION; HADRONS; DECAY; FRACTIONS; GENERATOR;

D O I：

10.1007/JHEP04(2018)108

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The p(T)-differential production cross section of prompt Lambda(+)(c) charmed baryons was measured with the ALICE detector at the Large Hadron Collider (LHC) in pp collisions at root s = 7 TeV and in p-Pb collisions at root s(NN) = 5.02 TeV at midrapidity. The Lambda(+)(c) and (Lambda) over bar (-)(c) were reconstructed in the hadronic decay modes Lambda(+)(c) -> pK(-)pi(+), Lambda(+)(c)-> pK(S)(0)) and in the semileptonic channel Lambda(+)(c) -> e(+)nu(e)Lambda (and charge conjugates). The measured values of the Lambda(+)(c)/D-0 ratio, which is sensitive to the c-quark hadronisation mechanism, and in particular to the production of baryons, are presented and are larger than those measured previously in different colliding systems, centre-of-mass energies, rapidity and p(T) intervals, where the Lambda(+)(c) production process may differ. The results are compared with the expectations obtained from perturbative Quantum Chromodynamics calculations and Monte Carlo event generators. Neither perturbative QCD calculations nor Monte Carlo models reproduce the data, indicating that the fragmentation of heavy-flavour baryons is not well understood. The first measurement at the LHC of the Lambda(+)(c) nuclear modification factor, R-ppb, is also presented. The R-ppb is found to be consistent with unity and with that of D mesons within the uncertainties, and consistent with a theoretical calculation that includes cold nuclear matter effects and a calculation that includes charm quark interactions with a deconfined medium.

引用

页数：48

共 101 条

[11]

Abelev B, 2012, J HIGH ENERGY PHYS, DOI 10.1007/JHEP01(2012)128

[12] Long-range angular correlations on the near and away side in p-Pb collisions at √SNN=5.02 TeV [J].

Abelev, Betty ;

Adam, Jaroslav ;

Adamova, Dagmar ;

Adare, Andrew Marshall ;

Aggarwal, Madan ;

Rinella, Gianluca Aglieri ;

Agnello, Michelangelo ;

Agocs, Andras Gabor ;

Agostinelli, Andrea ;

Ahammed, Zubayer ;

Ahmad, Nazeer ;

Ahmad, Arshad ;

Ahn, Sul-Ah ;

Ahn, Sang Un ;

Ajaz, Muhammad ;

Akindinov, Alexander ;

Aleksandrov, Dmitry ;

Alessandro, Bruno ;

Alici, Andrea ;

Alkin, Anton ;

Almaraz Avina, Erick Jonathan ;

Alme, Johan ;

Alt, Torsten ;

Altini, Valerio ;

Altinpinar, Sedat ;

Altsybeev, Igor ;

Andrei, Cristian ;

Andronic, Anton ;

Anguelov, Venelin ;

Anielski, Jonas ;

Anson, Christopher Daniel ;

Anticic, Tome ;

Antinori, Federico ;

Antonioli, Pietro ;

Aphecetche, Laurent Bernard ;

Appelshauser, Harald ;

Arbor, Nicolas ;

Arcelli, Silvia ;

Arend, Andreas ;

Armesto, Nestor ;

Arnaldi, Roberta ;

Aronsson, Tomas Robert ;

Arsene, Ionut Cristian ;

Arslandok, Mesut ;

Asryan, Andzhey ;

Augustinus, Andre ;

Averbeck, Ralf Peter ;

Awes, Terry ;

Aysto, Juha Heikki ;

Azmi, Mohd Danish .

PHYSICS LETTERS B, 2013, 719 (1-3) :29-41

[13] Measurement of charm fragmentation fractions in photoproduction at HERA [J].

Abramowicz, H. ;

Abt, I. ;

Adamczyk, L. ;

Adamus, M. ;

Aggarwal, R. ;

Antonelli, S. ;

Antonioli, P. ;

Antonov, A. ;

Arneodo, M. ;

Arslan, O. ;

Aushev, V. ;

Aushev, Y. ;

Bachynska, O. ;

Bamberger, A. ;

Barakbaev, A. N. ;

Barbagli, G. ;

Bari, G. ;

Barreiro, F. ;

Bartosik, N. ;

Bartsch, D. ;

Basile, M. ;

Behnke, O. ;

Behr, J. ;

Behrens, U. ;

Bellagamba, L. ;

Bertolin, A. ;

Bhadra, S. ;

Bindi, M. ;

Blohm, C. ;

Bokhonov, V. ;

Bold, T. ;

Boos, E. G. ;

Borras, K. ;

Boscherini, D. ;

Bot, D. ;

Brock, I. ;

Brownson, E. ;

Brugnera, R. ;

Bruemmer, N. ;

Bruni, A. ;

Bruni, G. ;

Brzozowska, B. ;

Bussey, P. J. ;

Bylsma, B. ;

Caldwell, A. ;

Capua, M. ;

Carlin, R. ;

Catterall, C. D. ;

Chekanov, S. ;

Chwastowski, J. .

JOURNAL OF HIGH ENERGY PHYSICS, 2013, (09)

[14] Measurement of D+ and Λc+ production in deep inelastic scattering at HERA [J].

Abramowicz, H. ;

Abt, I. ;

Adamczyk, L. ;

Adamus, M. ;

Aggarwal, R. ;

Antonelli, S. ;

Antonioli, P. ;

Antonov, A. ;

Arneodo, M. ;

Aushev, V. ;

Aushev, Y. ;

Bachynska, O. ;

Bamberger, A. ;

Barakbaev, A. N. ;

Barbagli, G. ;

Bari, G. ;

Barreiro, F. ;

Bartsch, D. ;

Basile, M. ;

Behnke, O. ;

Behr, J. ;

Behrens, U. ;

Bellagamba, L. ;

Bertolin, A. ;

Bhadra, S. ;

Bindi, M. ;

Blohm, C. ;

Bold, T. ;

Boos, E. G. ;

Borodin, M. ;

Borras, K. ;

Boscherini, D. ;

Bot, D. ;

Boutle, S. K. ;

Brock, I. ;

Brownson, E. ;

Brugnera, R. ;

Bruemmer, N. ;

Bruni, A. ;

Bruni, G. ;

Brzozowska, B. ;

Bussey, P. J. ;

Butterworth, J. M. ;

Bylsma, B. ;

Caldwell, A. ;

Capua, M. ;

Carlin, R. ;

Catterall, C. D. ;

Chekanov, S. ;

Chwastowski, J. .

JOURNAL OF HIGH ENERGY PHYSICS, 2010, (11)

[15]

Abreu P, 2000, EUR PHYS J C, V12, P225, DOI [10.1007/s100529900228, 10.1007/s1005299000228]

[16]

Acharya S, 2017, EUR PHYS J C, V77, DOI 10.1140/epjc/s10052-017-5090-4

[17] Determination of the event collision time with the ALICE detector at the LHC [J].

Adam, J. ;

Adamova, D. ;

Aggarwal, M. M. ;

Rinella, G. Aglieri ;

Agnello, M. ;

Agrawal, N. ;

Ahammed, Z. ;

Ahmad, S. ;

Ahn, S. U. ;

Aiola, S. ;

Akindinov, A. ;

Alam, S. N. ;

Albuquerque, D. S. D. ;

Aleksandrov, D. ;

Alessandro, B. ;

Alexandre, D. ;

Alfaro Molina, R. ;

Alici, A. ;

Alkin, A. ;

Alme, J. ;

Alt, T. ;

Altinpinar, S. ;

Altsybeev, I. ;

Alves Garcia Prado, C. ;

An, M. ;

Andrei, C. ;

Andrews, H. A. ;

Andronic, A. ;

Anguelov, V. ;

Anson, C. ;

Anticic, T. ;

Antinori, F. ;

Antonioli, P. ;

Anwar, R. ;

Aphecetche, L. ;

Appelshaeuser, H. ;

Arcelli, S. ;

Arnaldi, R. ;

Arnold, O. W. ;

Arsene, I. C. ;

Arslandok, M. ;

Audurier, B. ;

Augustinus, A. ;

Averbeck, R. ;

Azmi, M. D. ;

Badala, A. ;

Baek, Y. W. ;

Bagnasco, S. ;

Bailhache, R. ;

Bala, R. .

EUROPEAN PHYSICAL JOURNAL PLUS, 2017, 132 (02)

[18] Multi-strange baryon production in p-Pb collisions at √SNN=5.02 TeV [J].

Adam, J. ;

Adamova, D. ;

Aggarwal, M. M. ;

Rinella, G. Aglieri ;

Agnello, M. ;

Agrawal, N. ;

Ahammed, Z. ;

Ahmad, S. ;

Ahn, S. U. ;

Aiola, S. ;

Akindinov, A. ;

Alam, S. N. ;

Aleksandrov, D. ;

Alessandro, B. ;

Alexandre, D. ;

Molina, R. Alfaro ;

Alici, A. ;

Alkin, A. ;

Almaraz, J. R. M. ;

Alme, J. ;

Alt, T. ;

Altinpinar, S. ;

Altsybeev, I. ;

Prado, C. Alves Garcia ;

Andrei, C. ;

Andronic, A. ;

Anguelov, V. ;

Anielski, J. ;

Anticic, T. ;

Antinori, F. ;

Antonioli, P. ;

Aphecetche, L. ;

Appelshaeuser, H. ;

Arcelli, S. ;

Arnaldi, R. ;

Arnold, O. W. ;

Arsene, I. C. ;

Arslandok, M. ;

Audurier, B. ;

Augustinus, A. ;

Averbeck, R. ;

Azmi, M. D. ;

Badala, A. ;

Baek, Y. W. ;

Bagnasco, S. ;

Bailhache, R. ;

Bala, R. ;

Balasubramanian, S. ;

Baldisseri, A. ;

Baral, R. C. .

PHYSICS LETTERS B, 2016, 758 :389-401

[19] Particle identification in ALICE: a Bayesian approach [J].

Adam, J. ;

Adamova, D. ;

Aggarwal, M. M. ;

Rinella, G. Aglieri ;

Agnello, M. ;

Agrawal, N. ;

Ahammed, Z. ;

Ahmad, S. ;

Ahn, S. U. ;

Aiola, S. ;

Akindinov, A. ;

Alam, S. N. ;

Albuquerque, D. S. D. ;

Aleksandrov, D. ;

Alessandro, B. ;

Alexandre, D. ;

Alfaro Molina, R. ;

Alici, A. ;

Alkin, A. ;

Almaraz, J. R. M. ;

Alme, J. ;

Alt, T. ;

Altinpinar, S. ;

Altsybeev, I. ;

Alves Garcia Prado, C. ;

Andrei, C. ;

Andronic, A. ;

Anguelov, V. ;

Anticic, T. ;

Antinori, F. ;

Antonioli, P. ;

Aphecetche, L. ;

Appelshaeuser, H. ;

Arcelli, S. ;

Arnaldi, R. ;

Arnold, O. W. ;

Arsene, I. C. ;

Arslandok, M. ;

Audurier, B. ;

Augustinus, A. ;

Averbeck, R. ;

Azmi, M. D. ;

Badala, A. ;

Baek, Y. W. ;

Bagnasco, S. ;

Bailhache, R. ;

Bala, R. ;

Balasubramanian, S. ;

Baldisseri, A. ;

Baral, R. C. .

EUROPEAN PHYSICAL JOURNAL PLUS, 2016, 131 (05)

[20] Forward-central two-particle correlations in p-Pb collisions at √sNN=5.02 TeV [J].

Adam, J. ;

Adamova, D. ;

Aggarwal, M. M. ;

Rinella, G. Aglieri ;

Agnello, M. ;

Agrawal, N. ;

Ahammed, Z. ;

Ahn, S. U. ;

Aimo, I. ;

Aiola, S. ;

Ajaz, M. ;

Akindinov, A. ;

Alam, S. N. ;

Aleksandrov, D. ;

Alessandro, B. ;

Alexandre, D. ;

Molina, R. Alfaro ;

Alici, A. ;

Alkin, A. ;

Almaraz, J. R. M. ;

Alme, J. ;

Alt, T. ;

Altinpinar, S. ;

Altsybeev, I. ;

Alves Garcia Prado, C. ;

Andrei, C. ;

Andronic, A. ;

Anguelov, V. ;

Anielski, J. ;

Anticic, T. ;

Antinori, F. ;

Antonioli, R. ;

Aphecetche, L. ;

Appelshaeuser, H. ;

Arcelli, S. ;

Armesto, N. ;

Arnaldi, R. ;

Arsene, I. C. ;

Arslandok, M. ;

Audurier, B. ;

Augustinus, A. ;

Averbeck, R. ;

Azmi, M. D. ;

Bach, M. ;

Badala, A. ;

Baek, Y. W. ;

Bagnasco, S. ;

Bailhache, R. ;

Bala, R. ;

Baldisseri, A. .

PHYSICS LETTERS B, 2016, 753 :126-139

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