Measurement of the azimuthal anisotropy for charged particle production in √sNN=2.76 TeV lead-lead collisions with the ATLAS detector

被引:453
作者
Aad, G. [1 ]
Abbott, B. [148 ]
Abdallah, J. [17 ,18 ,19 ]
Khalek, S. Abdel [152 ,153 ]
Abdelalim, A. A. [72 ]
Abdesselam, A. [41 ,156 ,210 ]
Abdinov, O. [16 ]
Abi, B. [149 ]
Abolins, M. [122 ]
AbouZeid, O. S. [213 ]
Abramowicz, H. [207 ]
Abreu, H. [152 ,153 ]
Acerbi, E. [123 ,124 ]
Acharya, B. S. [220 ,221 ]
Adamczyk, L. [61 ]
Adams, D. L. [40 ]
Addy, T. N. [83 ]
Adelman, J. [237 ]
Aderholz, M. [134 ]
Adomeit, S. [133 ]
Adragna, P. [106 ]
Adye, T. [171 ]
Aefsky, S. [35 ]
Aguilar-Saavedra, J. A. [165 ,166 ,240 ]
Aharrouche, M. [114 ]
Ahlen, S. P. [34 ]
Ahles, F. [1 ]
Ahmad, A. [201 ,202 ]
Ahsan, M. [64 ]
Aielli, G. [176 ,177 ]
Akdogan, T. [28 ]
Akesson, T. P. A. [112 ]
Akimoto, G. [209 ,210 ]
Akimov, A. V. [129 ]
Akiyama, A. [95 ]
Alam, M. S. [2 ]
Alam, M. A. [107 ]
Albert, J. [231 ]
Albrand, S. [80 ,81 ,82 ]
Aleksa, M. [46 ]
Aleksandrov, I. N. [93 ]
Alessandria, F. [123 ]
Alexa, C. [41 ]
Alexander, G. [207 ]
Alexandre, G. [72 ]
Alexopoulos, T. [15 ]
Alhroob, M. [33 ]
Aliev, M. [24 ]
Alimonti, G. [123 ]
Alison, J. [159 ]
机构
[1] Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany
[2] SUNY Albany, Albany, NY 12222 USA
[3] Univ Alberta, Dept Phys, Edmonton, AB, Canada
[4] Ankara Univ, Dept Phys, TR-06100 Ankara, Turkey
[5] Dumlupinar Univ, Dept Phys, Kutahya, Turkey
[6] Gazi Univ, Dept Phys, Ankara, Turkey
[7] TOBB Univ Econ & Technol, Div Phys, Ankara, Turkey
[8] Turkish Atom Energy Commiss, Ankara, Turkey
[9] CNRS, LAPP, IN2P3, Annecy Le Vieux, France
[10] Univ Savoie, Annecy Le Vieux, France
[11] Argonne Natl Lab, High Energy Phys Div, Argonne, IL 60439 USA
[12] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA
[13] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA
[14] Univ Athens, Dept Phys, Athens, Greece
[15] Natl Tech Univ Athens, Dept Phys, Zografos, Greece
[16] Azerbaijan Acad Sci, Inst Phys, Baku, Azerbaijan
[17] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain
[18] Univ Autonoma Barcelona, Dept Fis, E-08193 Barcelona, Spain
[19] ICREA, Barcelona, Spain
[20] Univ Belgrade, Inst Phys, Belgrade, Serbia
[21] Univ Belgrade, Vinca Inst Nucl Sci, Belgrade, Serbia
[22] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[23] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA
[24] Humboldt Univ, Dept Phys, Berlin, Germany
[25] Univ Bern, Albert Einstein Ctr Fundamental Phys, Bern, Switzerland
[26] Univ Bern, High Energy Phys Lab, Bern, Switzerland
[27] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England
[28] Bogazici Univ, Dept Phys, Istanbul, Turkey
[29] Dogus Univ, Div Phys, Istanbul, Turkey
[30] Gaziantep Univ, Dept Phys Engn, Gaziantep, Turkey
[31] Ist Nazl Fis Nucl, Sez Bologna, Milan, Italy
[32] Univ Bologna, Dipartimento Fis, Bologna, Italy
[33] Univ Bonn, Inst Phys, Bonn, Germany
[34] Boston Univ, Dept Phys, Boston, MA 02215 USA
[35] Brandeis Univ, Dept Phys, Waltham, MA 02254 USA
[36] Univ Fed Rio De Janeiro COPPE EE IF, Rio De Janeiro, Brazil
[37] Fed Univ Juiz Fora UFJF, Juiz De Fora, Brazil
[38] Fed Univ Sao Joao del Rei UFSJ, Sao Joao Del Rei, Brazil
[39] Univ Sao Paulo, Inst Fis, BR-01498 Sao Paulo, Brazil
[40] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[41] Natl Inst Phys & Nucl Engn, Bucharest, Romania
[42] Univ Politehn Bucuresti, Bucharest, Romania
[43] Univ Buenos Aires, Dept Fis, Buenos Aires, DF, Argentina
[44] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[45] Carleton Univ, Dept Phys, Ottawa, ON K1S 5B6, Canada
[46] CERN, Geneva, Switzerland
[47] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[48] Pontificia Univ Catolica Chile, Dept Fis, Santiago, Chile
[49] Univ Tecn Federico Santa Maria, Dept Fis, Valparaiso, Chile
[50] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
基金
加拿大自然科学与工程研究理事会; 美国国家科学基金会; 巴西圣保罗研究基金会;
关键词
QUARK-GLUON PLASMA; PB-PB COLLISIONS; ELLIPTIC FLOW; PERSPECTIVE;
D O I
10.1103/PhysRevC.86.014907
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
Differential measurements of charged particle azimuthal anisotropy are presented for lead-lead collisions at root sNN = 2.76 TeV with the ATLAS detector at the LHC, based on an integrated luminosity of approximately 8 mu b(-1). This anisotropy is characterized via a Fourier expansion of the distribution of charged particles in azimuthal angle relative to the reaction plane, with the coefficients v(n) denoting the magnitude of the anisotropy. Significant v(2)-v(6) values are obtained as a function of transverse momentum (0.5 < p(T) < 20 GeV), pseudorapidity (|eta| < 2.5), and centrality using an event plane method. The v(n) values for n >= 3 are found to vary weakly with both eta and centrality, and their p(T) dependencies are found to follow an approximate scaling relation, v(n)(1/n)(p(T)) proportional to v(2)(1/2)(p(T)), except in the top 5% most central collisions. A Fourier analysis of the charged particle pair distribution in relative azimuthal angle (Delta phi = phi(a)-phi(b)) is performed to extract the coefficients v(n,n) = < cos n Delta phi >. For pairs of charged particles with a large pseudorapidity gap (|Delta eta = eta(a) - eta(b)| > 2) and one particle with p(T) < 3 GeV, the v(2,2)-v(6,6) values are found to factorize as v(n,n)(p(T)(a), p(T)(b)) approximate to v(n) (p(T)(a))v(n)(p(T)(b)) in central and midcentral events. Such factorization suggests that these values of v(2,2)-v(6,6) are primarily attributable to the response of the created matter to the fluctuations in the geometry of the initial state. A detailed study shows that the v(1,1)(p(T)(a), p(T)(b)) data are consistent with the combined contributions from a rapidity-even v(1) and global momentum conservation. A two-component fit is used to extract the v(1) contribution. The extracted v(1) isobserved to cross zero at pT approximate to 1.0 GeV, reaches a maximum at 4-5 GeV with a value comparable to that for v(3), and decreases at higher p(T).
引用
收藏
页码:014907 / 1
页数:41
相关论文
共 77 条
[1]   Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead-lead collisions at √sNN=2.76 TeV with the ATLAS detector [J].
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. ;
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. ;
Akiyama, A. ;
Alam, M. S. ;
Alam, M. A. ;
Albert, J. ;
Albrand, S. ;
Aleksa, M. ;
Aleksandrov, I. N. ;
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. .
PHYSICS LETTERS B, 2012, 710 (03) :363-382
[2]   Measurement of the pseudorapidity and transverse momentum dependence of the elliptic flow of charged particles in lead-lead collisions at √sNN=2.76 TeV with the ATLAS detector [J].
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. ;
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. ;
Akiyama, A. ;
Alaml, M. S. ;
Alam, M. A. ;
Albrand, S. ;
Aleksa, M. ;
Aleksandrov, I. N. ;
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. ;
Almond, J. .
PHYSICS LETTERS B, 2012, 707 (3-4) :330-348
[3]   Charged-particle multiplicities in pp interactions at √s=900 GeV measured with the ATLAS detector at the LHC ATLAS Collaboration [J].
Aad, G. ;
Abat, E. ;
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. ;
Adorisio, C. ;
Adragna, P. ;
Adye, T. ;
Aefsky, S. ;
Aguilar-Saavedra, J. A. ;
Aharrouche, M. ;
Ahlen, S. P. ;
Ahles, F. ;
Ahmad, A. ;
Ahmed, H. ;
Ahsan, M. ;
Aielli, G. ;
Akdogan, T. ;
Akesson, P. F. ;
Akesson, T. P. A. ;
Akimoto, G. ;
Akimov, A. V. ;
Aktas, A. ;
Alam, M. S. ;
Alam, M. A. ;
Albert, J. ;
Albrand, S. ;
Aleksa, M. ;
Aleksandrov, I. N. ;
Aleppo, M. ;
Alessandria, F. ;
Alexa, C. ;
Alexander, G. ;
Alexandre, G. ;
Alexopoulos, T. ;
Alhroob, M. ;
Aliev, M. .
PHYSICS LETTERS B, 2010, 688 (01) :21-42
[4]   The ATLAS Experiment at the CERN Large Hadron Collider [J].
Aad, G. ;
Abat, E. ;
Abdallah, J. ;
Abdelalim, A. A. ;
Abdesselam, A. ;
Abdinov, O. ;
Abi, B. A. ;
Abolins, M. ;
Abramowicz, H. ;
Acerbi, E. ;
Acharya, B. S. ;
Achenbach, R. ;
Ackers, M. ;
Adams, D. L. ;
Adamyan, F. ;
Addy, T. N. ;
Aderholz, M. ;
Adorisio, C. ;
Adragna, P. ;
Aharrouche, M. ;
Ahlen, S. P. ;
Ahles, F. ;
Ahmad, A. ;
Ahmed, H. ;
Aielli, G. ;
Akesson, P. F. ;
Akesson, T. P. A. ;
Alam, S. M. ;
Albert, J. ;
Albrand, S. ;
Aleksa, M. ;
Aleksandrov, I. N. ;
Aleppo, M. ;
Alessandria, F. ;
Alexa, C. ;
Alexander, G. ;
Alexopoulos, T. ;
Alimonti, G. ;
Aliyev, M. ;
Allport, P. P. ;
Allwood-Spiers, S. E. ;
Aloisio, A. ;
Alonso, J. ;
Alves, R. ;
Alviggi, M. G. ;
Amako, K. ;
Amaral, P. ;
Amaral, S. P. ;
Ambrosini, G. ;
Ambrosio, G. .
JOURNAL OF INSTRUMENTATION, 2008, 3 (08)
[5]   Harmonic decomposition of two particle angular correlations in Pb-Pb collisions at √sNN=2.76 TeV [J].
Aamodt, K. ;
Abelev, B. ;
Abrahantes Quintana, A. ;
Adamova, D. ;
Adare, A. M. ;
Aggarwal, M. M. ;
Rinella, G. Aglieri ;
Agocs, A. G. ;
Agostinelli, A. ;
Aguilar Salazar, S. ;
Ahammed, Z. ;
Ahmad, N. ;
Masoodi, A. Ahmad ;
Ahn, S. U. ;
Akindinov, A. ;
Aleksandrov, D. ;
Alessandro, B. ;
Molina, R. Alfaro ;
Alici, A. ;
Alkin, A. ;
Almaraz Avina, E. ;
Alme, J. ;
Alt, T. ;
Altini, V. ;
Altinpinar, S. ;
Altsybeev, I. ;
Andrei, C. ;
Andronic, A. ;
Anguelov, V. ;
Anielski, J. ;
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. ;
Aysto, J. ;
Azmi, M. D. ;
Bach, M. .
PHYSICS LETTERS B, 2012, 708 (3-5) :249-264
[6]   Higher Harmonic Anisotropic Flow Measurements of Charged Particles in Pb-Pb Collisions at √sNN=2.76 TeV [J].
Aamodt, K. ;
Abelev, B. ;
Abrahantes Quintana, A. ;
Adamova, D. ;
Adare, A. M. ;
Aggarwal, M. M. ;
Rinella, G. Aglieri ;
Agocs, A. G. ;
Agostinelli, A. ;
Aguilar Salazar, S. ;
Ahammed, Z. ;
Ahmad, N. ;
Masoodi, A. Ahmad ;
Ahn, S. U. ;
Akindinov, A. ;
Aleksandrov, D. ;
Alessandro, B. ;
Alfaro Molina, R. ;
Alici, A. ;
Alkin, A. ;
Almaraz Avina, E. ;
Alt, T. ;
Altini, V. ;
Altsybeev, I. ;
Andrei, C. ;
Andronic, A. ;
Anguelov, V. ;
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. ;
Aysto, J. ;
Azmi, M. D. ;
Bach, M. ;
Badala, A. ;
Baek, Y. W. .
PHYSICAL REVIEW LETTERS, 2011, 107 (03)
[7]   Elliptic Flow of Charged Particles in Pb-Pb Collisions at √sNN=2.76 TeV [J].
Aamodt, K. ;
Abelev, B. ;
Abrahantes Quintana, A. ;
Adamova, D. ;
Adare, A. M. ;
Aggarwal, M. M. ;
Rinella, G. Aglieri ;
Agocs, A. G. ;
Aguilar Salazar, S. ;
Ahammed, Z. ;
Masoodi, A. Ahmad ;
Ahmad, N. ;
Ahn, S. U. ;
Akindinov, A. ;
Aleksandrov, D. ;
Alessandro, B. ;
Alfaro Molina, R. ;
Alici, A. ;
Alkin, A. ;
Almaraz Avina, E. ;
Alt, T. ;
Altini, V. ;
Altinpinar, S. ;
Altsybeev, I. ;
Andrei, C. ;
Andronic, A. ;
Anguelov, V. ;
Anson, C. ;
Anticic, T. ;
Antinori, F. ;
Antonioli, P. ;
Aphecetche, L. ;
H. Appelshaeuser ;
Arbor, N. ;
Arcelli, S. ;
Arend, A. ;
Armesto, N. ;
Arnaldi, R. ;
Aronsson, T. ;
Arsene, I. C. ;
Asryan, A. ;
Augustinus, A. ;
Averbeck, R. ;
Awes, T. C. ;
Aysto, J. ;
Azmi, M. D. ;
Bach, M. ;
Badala, A. ;
Baek, Y. W. ;
Bagnasco, S. .
PHYSICAL REVIEW LETTERS, 2010, 105 (25)
[8]   Long range rapidity correlations and jet production in high energy nuclear collisions [J].
Abelev, B. I. ;
Aggarwal, M. M. ;
Ahammed, Z. ;
Alakhverdyants, A. V. ;
Anderson, B. D. ;
Arkhipkin, D. ;
Averichev, G. S. ;
Balewski, J. ;
Barannikova, O. ;
Barnby, L. S. ;
Baudot, J. ;
Baumgart, S. ;
Beavis, D. R. ;
Bellwied, R. ;
Benedosso, F. ;
Betancourt, M. J. ;
Betts, R. R. ;
Bhasin, A. ;
Bhati, A. K. ;
Bichsel, H. ;
Bielcik, J. ;
Bielcikova, J. ;
Biritz, B. ;
Bland, L. C. ;
Bnzarov, I. ;
Bombara, M. ;
Bonner, B. E. ;
Bouchet, J. ;
Braidot, E. ;
Brandin, A. V. ;
Bruna, E. ;
Bueltmann, S. ;
Burton, T. P. ;
Bystersky, M. ;
Cai, X. Z. ;
Caines, H. ;
Sanchez, M. Calderon de la Barca ;
Catu, O. ;
Cebra, D. ;
Cendejas, R. ;
Cervantes, M. C. ;
Chajecki, Z. ;
Chaloupka, P. ;
Chattopadhyay, S. ;
Chen, H. F. ;
Chen, J. H. ;
Chen, J. Y. ;
Cheng, J. ;
Cherney, M. ;
Chikanian, A. .
PHYSICAL REVIEW C, 2009, 80 (06)
[9]   Centrality dependence of charged hadron and strange hadron elliptic flow from √sNN=200 GeVAu+Au collisions [J].
Abelev, B. I. ;
Aggarwal, M. M. ;
Ahammed, Z. ;
Anderson, B. D. ;
Arkhipkin, D. ;
Averichev, G. S. ;
Bai, Y. ;
Balewski, J. ;
Barannikova, O. ;
Barnby, L. S. ;
Baudot, J. ;
Baumgart, S. ;
Beavis, D. R. ;
Bellwied, R. ;
Benedosso, F. ;
Betts, R. R. ;
Bhardwaj, S. ;
Bhasin, A. ;
Bhati, A. K. ;
Bichsel, H. ;
Bielcik, J. ;
Bielcikova, J. ;
Bland, L. C. ;
Bombara, M. ;
Bonner, B. E. ;
Botje, M. ;
Braidot, E. ;
Brandin, A. V. ;
Bueltmann, S. ;
Burton, T. P. ;
Bystersky, M. ;
Cai, X. Z. ;
Caines, H. ;
Sanchez, M. Calderon de la Barca ;
Callner, J. ;
Catu, O. ;
Cebra, D. ;
Cervantes, M. C. ;
Chajecki, Z. ;
Chaloupka, P. ;
Chattopadhyay, S. ;
Chen, H. F. ;
Chen, J. H. ;
Chen, J. Y. ;
Cheng, J. ;
Cherney, M. ;
Chikanian, A. ;
Choi, K. E. ;
Christie, W. ;
Chung, S. U. .
PHYSICAL REVIEW C, 2008, 77 (05)
[10]   System-Size Independence of Directed Flow Measured at the BNL Relativistic Heavy-Ion Collider [J].
Abelev, B. I. ;
Aggarwal, M. M. ;
Ahammed, Z. ;
Anderson, B. D. ;
Arkhipkin, D. ;
Averichev, G. S. ;
Bai, Y. ;
Balewski, J. ;
Barannikova, O. ;
Barnby, L. S. ;
Baudot, J. ;
Baumgart, S. ;
Beavis, D. R. ;
Bellwied, R. ;
Benedosso, F. ;
Betts, R. R. ;
Bhardwaj, S. ;
Bhasin, A. ;
Bhati, A. K. ;
Bichsel, H. ;
Bielcik, J. ;
Bielcikova, J. ;
Biritz, B. ;
Bland, L. C. ;
Bombara, M. ;
Bonner, B. E. ;
Botje, M. ;
Bouchet, J. ;
Braidot, E. ;
Brandin, A. V. ;
Bueltmann, S. ;
Burton, T. P. ;
Bystersky, M. ;
Cai, X. Z. ;
Caines, H. ;
Sanchez, M. Calderon de la Barca ;
Callner, J. ;
Catu, O. ;
Cebra, D. ;
Cendejas, R. ;
Cervantes, M. C. ;
Chajecki, Z. ;
Chaloupka, P. ;
Chattopadhyay, S. ;
Chen, H. F. ;
Chen, J. H. ;
Chen, J. Y. ;
Cheng, J. ;
Cherney, M. ;
Chikanian, A. .
PHYSICAL REVIEW LETTERS, 2008, 101 (25)