Analysis of the apparent nuclear modification in peripheral Pb-Pb collisions at 5.02 TeV

被引：26

作者：

Acharya, S. ^{[153
]}

Acosta, F. T. ^{[23
]}

Adamova, D. ^{[106
]}

Adolfsson, J. ^{[93
]}

Aggarwal, M. M. ^{[111
]}

Rinella, G. Aglieri ^{[47
]}

Agnello, M. ^{[33
,42
]}

Agrawal, N. ^{[61
]}

Ahammed, Z. ^{[153
]}

Ahn, S. U. ^{[89
]}

Aiola, S. ^{[158
]}

Akindinov, A. ^{[77
]}

Al-Turany, M. ^{[117
,118
]}

Alam, S. N. ^{[153
]}

Albuquerque, D. S. D. ^{[135
]}

Aleksandrov, D. ^{[100
]}

Alessandro, B. ^{[71
]}

Alfaro Molina, R. ^{[85
]}

Ali, Y. ^{[18
]}

Alici, A. ^{[12
,13
,34
,35
,66
]}

Alkin, A. ^{[2
]}

Alme, J. ^{[25
]}

Alt, T. ^{[82
]}

Altenkamper, L. ^{[25
]}

Altsybeev, I ^{[125
]}

Anaam, M. N. ^{[7
]}

Andrei, C. ^{[60
]}

Andreou, D. ^{[47
]}

Andrews, H. A. ^{[122
]}

Andronic, A. ^{[117
,118
,156
]}

Angeletti, M. ^{[47
]}

Anguelov, V ^{[115
]}

Anson, C. ^{[19
]}

Anticic, T. ^{[119
]}

Antinori, F. ^{[69
]}

Antonioli, P. ^{[66
]}

Anwar, R. ^{[139
]}

Apadula, N. ^{[92
]}

Aphecetche, L. ^{[127
]}

Appelshaeuser, H. ^{[82
]}

Arcelli, S. ^{[34
,35
]}

Arnaldi, R. ^{[71
]}

Arnold, O. W. ^{[116
,130
]}

Arsene, I. C. ^{[24
]}

Arslandok, M. ^{[115
]}

Augustinus, A. ^{[47
]}

Averbeck, R. ^{[117
,118
]}

Azmi, M. D. ^{[20
]}

Badala, A. ^{[68
]}

Baek, Y. W. ^{[53
,73
]}

机构：

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

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

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

[4] CAPSS, Kolkata, India

[5] Budker Inst Nucl Phys, Novosibirsk, Russia

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

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

[8] Ctr Calcul IN2P3, Lyon, France

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

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

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

[12] Ctr Fermi, Museo Stor Fis, Rome, Italy

[13] Ctr Studi & Ric Enrico Fermi, Rome, Italy

[14] Chicago State Univ, Chicago, IL USA

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

[16] Chonbuk Natl Univ, Jeonju, South Korea

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

[18] CIIT Ctr Hlth Res, Islamabad, Pakistan

[19] Creighton Univ, Omaha, NE 68178 USA

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[41] Grp Collegato INFN, Salerno, Italy

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

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

[44] INFN, Sez Torino, Alessandria, Italy

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

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

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

[48] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia

[49] Western Norway Univ Appl Sci, Fac Engn & Sci, Bergen, Norway

[50] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Prague, Czech Republic

来源：

PHYSICS LETTERS B | 2019年 / 793卷

基金：

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

关键词：

CHARGED-PARTICLE PRODUCTION; TRANSVERSE-MOMENTUM; CENTRALITY DEPENDENCE; JET; SUPPRESSION; PP;

D O I：

10.1016/j.physletb.2019.04.047

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Charged-particle spectra at midrapidity are measured in Pb-Pb collisions at the centre-of-mass energy per nucleon-nucleon pair root s(NN) = 5.02 TeV and presented in centrality classes ranging from most central (0-5%) to most peripheral (95-100%) collisions. Possible medium effects are quantified using the nuclear modification factor (R-AA) by comparing the measured spectra with those from proton-proton collisions, scaled by the number of independent nucleon-nucleon collisions obtained from a Glauber model. At large transverse momenta (8 < p(T) < 20 GeV/c), the average R-AA is found to increase from about 0.15 in 0-5% central to a maximum value of about 0.8 in 75-85% peripheral collisions, beyond which it falls off strongly to below 0.2 for the most peripheral collisions. Furthermore, R-AA initially exhibits a positive slope as a function of p(T) in the 8-20 GeV/c interval, while for collisions beyond the 80% class the slope is negative. To reduce uncertainties related to event selection and normalization, we also provide the ratio of R-AA in adjacent centrality intervals. Our results in peripheral collisions are consistent with a PYTHIA-based model without nuclear modification, demonstrating that biases caused by the event selection and collision geometry can lead to the apparent suppression in peripheral collisions. This explains the unintuitive observation that R-AA is below unity in peripheral Pb-Pb, but equal to unity in minimum-bias p-Pb collisions despite similar charged-particle multiplicities. (C) 2019 Conseil Europeen pour la Recherche Nucleaire. Published by Elsevier B.V.

引用

页码：420 / 432

页数：13

共 52 条

[1] Transverse momentum, rapidity, and centrality dependence of inclusive charged-particle production in √sNN=5.02 TeV p+Pb collisions measured by the ATLAS experiment
Aad, G.
Abbott, B.
Abdallah, J.
Abdinov, O.
Abeloos, B.
Aben, R.
AbouZeid, O. S.
Abraham, N. L.
Abramowicz, H.
Abreu, H.
Abreu, R.
Abulaitia, Y.
Acharya, B. S.
Adamczyk, L.
Adams, D. L.
Adelman, J.
Adomeit, S.
Adye, T.
Affolder, A. A.
Agatonovic-Jovin, T.
Agricola, J.
Aguilar-Saavedra, J. A.
Ahlen, S. P.
Ahmadov, F.
Aielli, G.
Akerstedt, H.
Akesson, T. P. A.
Akimov, A. V.
Alberghi, G. L.
Albert, J.
Albrand, S.
Verzini, M. J. Alconada
Aleksa, M.
Aleksandrov, I. N.
Alexa, C.
Alexander, G.
Alexopoulos, T.
Alhroob, M.
Aliev, M.
Alimonti, G.
Alison, J.
Alkire, S. P.
Allbrooke, B. M. M.
Allen, B. W.
Allport, P. P.
Aloisio, A.
Alonso, A.
Alonso, F.
Alpigiani, C.
Alstaty, M.
[J]. PHYSICS LETTERS B, 2016, 763 : 313 - 336
[2] Centrality, rapidity, and transverse momentum dependence of isolated prompt photon production in lead-lead collisions at √SNN=2.76 TeV measured with the ATLAS detector
Aad, G.
Abbott, B.
Abdallah, J.
Khalek, S. Abdel
Abdinov, O.
Aben, R.
Abi, B.
Abolins, M.
AbouZeid, O. S.
Abramowicz, H.
Abreu, H.
Abreu, R.
Abulaiti, Y.
Acharya, B. S.
Adamczyk, L.
Adams, D. L.
Adelman, J.
Adomeit, S.
Adye, T.
Agatonovic-Jovin, T.
Aguilar-Saavedra, J. A.
Agustoni, M.
Ahlen, S. P.
Ahmadov, F.
Aielli, G.
Akerstedt, H.
Akesson, T. P. A.
Akimoto, G.
Akimov, A. V.
Alberghi, G. L.
Albert, J.
Albrand, S.
Alconada Verzini, M. J.
Aleksa, M.
Aleksandrov, I. N.
Alexa, C.
Alexander, G.
Alexandre, G.
Alexopoulos, T.
Alhroob, M.
Alimonti, G.
Alio, L.
Alison, J.
Allbrooke, B. M. M.
Allison, L. J.
Allport, P. P.
Almond, J.
Aloisio, A.
Alonso, A.
Alonso, F.
[J]. PHYSICAL REVIEW C, 2016, 93 (03)
[3] Aad G, 2015, J HIGH ENERGY PHYS, DOI 10.1007/JHEP09(2015)050
[4] Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at √sNN=2.76 TeV with the ATLAS Detector at the LHC
Aad, G.
Abbott, B.
Abdallah, J.
Abdelalim, A. A.
Abdesselam, A.
Abdinov, O.
Abi, B.
Abolins, M.
Abramowicz, H.
Abreu, H.
Acerbi, E.
Acharya, B. S.
Ackers, M.
Adams, D. L.
Addy, T. N.
Adelman, J.
Aderholz, M.
Adomeit, S.
Adragna, P.
Adye, T.
Aefsky, S.
Aguilar-Saavedra, J. A.
Aharrouche, M.
Ahlen, S. P.
Ahles, F.
Ahmad, A.
Ahsan, M.
Aielli, G.
Akdogan, T.
Akesson, T. P. A.
Akimoto, G.
Akimov, A. V.
Alam, M. S.
Alam, M. A.
Albrand, S.
Aleksa, M.
Aleksandrov, I. N.
Aleppo, M.
Alessandria, F.
Alexa, C.
Alexander, G.
Alexandre, G.
Alexopoulos, T.
Alhroob, M.
Aliev, M.
Alimonti, G.
Alison, J.
Aliyev, M.
Allport, P. P.
Allwood-Spiers, S. E.
[J]. PHYSICAL REVIEW LETTERS, 2010, 105 (25)
[5] Alignment of the ALICE Inner Tracking System with cosmic-ray tracks
Aamodt, K.
Abel, N.
Abeysekara, U.
Abrahantes Quintana, A.
Adamova, D.
Aggarwal, M.
Rinella, G. Aglieri
Agocs, A. G.
Salazar, S. Aguilar
Ahammed, Z.
Ahmad, A.
Ahmad, N.
Ahn, S. U.
Akimoto, R.
Akindinov, A.
Aleksandrov, D.
Alessandro, B.
Alfaro Molina, R.
Alici, A.
Almaraz Avina, E.
Alme, J.
Alt, T.
Altini, V.
Altinpinar, S.
Andrei, C.
Andronic, A.
Anelli, G.
Angelov, V.
Anson, C.
Anticic, T.
Antinori, F.
Antinori, S.
Antipin, K.
Antonczyk, D.
Antonioli, P.
Anzo, A.
Aphecetche, L.
Appelshaeuser, H.
Arcelli, S.
Arceo, R.
Arend, A.
Armesto, N.
Arnaldi, R.
Aronsson, T.
Arsene, I. C.
Asryan, A.
Augustinus, A.
Averbeck, R.
Awes, T. C.
Aysto, J.
[J]. JOURNAL OF INSTRUMENTATION, 2010, 5
[6] The ALICE experiment at the CERN LHC
Aamodt, K.
Quintana, A. Abrahantes
Achenbach, R.
Acounis, S.
Adamova, D.
Adler, C.
Aggarwal, M.
Agnese, F.
Rinella, G. Aglieri
Ahammed, Z.
Ahmad, A.
Ahmad, N.
Ahmad, S.
Akindinov, A.
Akishin, P.
Aleksandrov, D.
Alessandro, B.
Alfaro, R.
Alfarone, G.
Alici, A.
Alme, J.
Alt, T.
Altinpinar, S.
Amend, W.
Andrei, C.
Andres, Y.
Andronic, A.
Anelli, G.
Anfreville, M.
Angelov, V.
Anzo, A.
Anson, C.
Anticic, T.
Antonenko, V.
Antonczyk, D.
Antinori, F.
Antinori, S.
Antonioli, P.
Aphecetche, L.
Appelshaeuser, H.
Aprodu, V.
Arba, M.
Arcelli, S.
Argentieri, A.
Armesto, N.
Arnaldi, R.
Arefiev, A.
Arsene, I.
Asryan, A.
Augustinus, A.
[J]. JOURNAL OF INSTRUMENTATION, 2008, 3
[7] Performance of the ALICE VZERO system
Abbas, E.
Abelev, B.
Adam, J.
Adamova, D.
Adare, A. M.
Aggarwal, M. M.
Rinella, G. Aglieri
Agnello, M.
Agocs, A. G.
Agostinelli, A.
Ahammed, Z.
Ahmad, N.
Masoodi, A. Ahmad
Ahmed, I.
Ahn, S. A.
Ahn, S. U.
Aimo, I.
Ajaz, M.
Akindinov, A.
Aleksandrov, D.
Alessandro, B.
Alexandre, D.
Alfaro Molina, R.
Alici, A.
Alkin, A.
Almara Avina, E.
Alme, J.
Alt, T.
Altini, V.
Altinpinar, S.
Altsybeev, I.
Andrei, C.
Andronic, A.
Anguelov, V.
Anielski, J.
Anson, C.
Anticic, T.
Antinori, F.
Antonioli, P.
Aphecetche, L.
Appelshaeuser, H.
Arbor, N.
Arcelli, S.
Arend, A.
Armesto, N.
Arnaldi, R.
Aronsson, T.
Arsene, I. C.
Arslandok, M.
Asryan, A.
[J]. JOURNAL OF INSTRUMENTATION, 2013, 8
[8] Abelev B, 2014, EUR PHYS J C, V74, DOI 10.1140/epjc/s10052-014-3054-5
[9] Performance of the ALICE experiment at the CERN LHC
Abelev, B.
Abramyan, A.
Adam, J.
Adamova, D.
Aggarwal, M. M.
Agnello, M.
Agostinelli, A.
Agrawal, N.
Ahammed, Z.
Ahmad, N.
Masoodi, A. Ahmad
Ahmed, I.
Ahn, S. U.
Ahn, S. A.
Aimo, I.
Aiola, S.
Ajaz, M.
Akindinov, A.
Aleksandrov, D.
Alessandro, B.
Alexandre, D.
Alici, A.
Alkin, A.
Alme, J.
Alt, T.
Altini, V.
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.
Arbor, N.
Arcelli, S.
Armesto, N.
Arnaldi, R.
Aronsson, T.
Arsene, I. C.
Arslandok, M.
Augustinus, A.
Averbeck, R.
Awes, T. C.
Azmi, M. D.
Bach, M.
[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2014, 29 (24):
[10] Centrality determination of Pb-Pb collisions at √sNN=2.76 TeV with ALICE
Abelev, B.
Adam, J.
Adamova, D.
Adare, A. M.
Aggarwal, M. M.
Rinella, G. Aglieri
Agnello, M.
Agocs, A. G.
Agostinelli, A.
Ahammed, Z.
Ahmad, N.
Masoodi, A. Ahmad
Ahn, S. U.
Ahn, S. A.
Ajaz, M.
Akindinov, A.
Aleksandrov, D.
Alessandro, B.
Alici, A.
Alkin, A.
Avina, E. Almaraz
Alme, J.
Alt, T.
Altini, V.
Altinpinar, S.
Altsybeev, I.
Andrei, C.
Andronic, A.
Anguelov, V.
Anielski, J.
Anson, C.
Anticic, T.
Antinori, F.
Antonioli, P.
Aphecetche, L.
Appelshaeuser, H.
Arbor, N.
Arcelli, S.
Arend, A.
Armesto, N.
Arnaldi, R.
Aronsson, T.
Arsene, I. C.
Arslandok, M.
Asryan, A.
Augustinus, A.
Averbeck, R.
Awes, T. C.
Aeystoe, J.
Azmi, M. D.
[J]. PHYSICAL REVIEW C, 2013, 88 (04)

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