Elliptic flow of charged pions, protons and strange particles emitted in Pb plus Au collisions at top SPS energy

被引:10
作者
Adamova, D. [2 ]
Agakichiev, G. [3 ]
Andronic, A. [4 ]
Antonczyk, D. [5 ]
Appelshaeuser, H. [5 ]
Belaga, V. [3 ]
Bielcikova, J. [1 ,6 ]
Braun-Munzinger, P. [4 ]
Busch, O. [6 ]
Cherlin, A. [7 ]
Damjanovic, S. [6 ]
Dietel, T. [8 ]
Dietrich, L. [6 ]
Drees, A. [9 ]
Dubitzky, W. [6 ]
Esumi, S. I. [6 ]
Filimonov, K. [6 ]
Fomenko, K. [3 ]
Fraenkel, Z. [7 ]
Garabatos, C. [4 ]
Glaessel, P. [6 ]
Hering, G. [4 ]
Holeczek, J. [4 ]
Kalisky, M. [4 ]
Krobath, G. [6 ]
Kushpil, V. [2 ]
Maas, A. [4 ]
Marin, A. [4 ]
Milosevic, J. [6 ]
Miskowiec, D. [4 ]
Panebrattsev, Y. [3 ]
Petchenova, O. [3 ]
Petracek, V. [6 ]
Radomski, S. [4 ]
Rak, J. [4 ]
Ravinovich, I. [7 ]
Rehak, P. [10 ]
Sako, H. [4 ]
Schmitz, W. [6 ]
Schuchmann, S. [5 ]
Sedykh, S. [4 ]
Shimansky, S. [3 ]
Stachel, J. [6 ]
Sumbera, M. [2 ]
Tilsner, H. [6 ]
Tserruya, I. [7 ]
Tsiledakis, G. [4 ]
Wessels, J. P. [8 ]
Wienold, T. [6 ]
Wurm, J. P. [1 ]
机构
[1] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany
[2] Acad Sci Czech Republ, Inst Nucl Phys, CZ-25068 Rez, Czech Republic
[3] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia
[4] GSI Darmstadt, Inst Kernphys, D-64291 Darmstadt, Germany
[5] Goethe Univ Frankfurt, Inst Kernphys, D-60438 Frankfurt, Germany
[6] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany
[7] Weizmann Inst Sci, Dept Particle Phys, IL-76100 Rehovot, Israel
[8] Univ Munster, Inst Kernphys, D-48149 Munster, Germany
[9] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11974 USA
[10] Brookhaven Natl Lab, Instrumentat Div, Upton, NY 11973 USA
关键词
Flow; Strangeness; Viscosity; QUARK-GLUON PLASMA; CENTRALITY DEPENDENCE; ANISOTROPY; PERSPECTIVE; HADRONS; MATTER; EVENT;
D O I
10.1016/j.nuclphysa.2012.08.004
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 elliptic flow spectra v(2)(p(T)) of pi(-), K-S(0), p, Lambda have been measured at root s(NN) = 17.3 GeV around midrapidity by the CERN-CERES/NA45 experiment in mid-central Pb + Au collisions (10% of sigma(geo)). The P-T range extends from about 0.1 GeV/c, (0.55 GeV/c for Lambda) to more than 2 GeV/c. Protons below 0.4 GeV/c are directly identified by dE/dx. At higher p(T), proton elliptic flow is derived as a constituent, besides pi(+) and K+, of the elliptic flow of positive pion candidates. This retrieval requires additional inputs: (i) of the particle composition, and (ii) of v(2)(p(T)) of positive pions. For (i), particle ratios obtained by NA49 are adapted to CERES conditions; for (ii), the measured v(2)(p(T)) of negative pions is substituted, assuming pi(+) and pi(-) elliptic flow magnitudes to be sufficiently close. The v(2)(p(T)) spectra are compared to ideal-hydrodynamics calculations. In synopsis of the series pi(-)-K-S(0)-p-Lambda, flow magnitudes are seen to fall with decreasing P-T progressively even below hydro calculations with early kinetic freeze-out (T-f = 160 MeV) leaving not much time for hadronic evolution. The proton v(2)(P-T) data show a downward swing towards low p(T) with excursions into negative v(2) values. The pion-flow isospin asymmetry observed recently by STAR at RHIC, invalidating in principle our working assumption, is found in its impact on proton flow bracketed from above by the direct proton flow data, and not to alter any of our conclusions. Results are discussed in perspective of recent viscous hydrodynamics studies which focus on late hadronic stages. (C) 2012 Elsevier B.V. All rights reserved.
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页码:41 / 73
页数:33
相关论文
共 71 条
  • [1] 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
    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.
    [J]. PHYSICS LETTERS B, 2012, 707 (3-4) : 330 - 348
  • [2] Elliptic Flow of Charged Particles in Pb-Pb Collisions at √sNN=2.76 TeV
    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.
    [J]. PHYSICAL REVIEW LETTERS, 2010, 105 (25)
  • [3] Centrality dependence of charged hadron and strange hadron elliptic flow from √sNN=200 GeVAu+Au collisions
    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.
    [J]. PHYSICAL REVIEW C, 2008, 77 (05):
  • [4] The CERES/NA45 radial drift Time Projection Chamber
    Adamova, D.
    Agakichiev, G.
    Antonczyk, D.
    Appelshaeuser, H.
    Belaga, V.
    Bielcikova, J.
    Braun-Munzinger, P.
    Campagnolo, R.
    Cherlin, A.
    Damjanovic, S.
    Dietel, T.
    Dietrich, L.
    Drees, A.
    Dubitzky, W.
    Esumi, S. I.
    Filimonov, K.
    Fraenkel, Z.
    Garabatos, C.
    Glaessel, P.
    Hering, G.
    Holeczek, J.
    Kushpil, V.
    Marin, A.
    Milosevic, J.
    Milov, A.
    Miskowiec, D.
    Musa, L.
    Panebrattsev, Y.
    Pechenova, O.
    Petracek, V.
    Pfeiffer, A.
    Rak, J.
    Ravinovich, I.
    Richter, M.
    Sako, H.
    Schaefer, E.
    Schmitz, W.
    Schukraft, J.
    Seipp, W.
    Sharma, A.
    Shimansky, S.
    Stachel, J.
    Sumbera, M.
    Tilsner, H.
    Tserruya, I.
    Wessels, J. P.
    Wienold, T.
    Windelband, B.
    Wurm, J. P.
    Xie, W.
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2008, 593 (03) : 203 - 231
  • [5] Beam energy and centrality dependence of two-pion Bose-Einstein correlations at SPS energies
    Adamová, D
    Agakichiev, G
    Appelshäuser, H
    Belaga, V
    Braun-Munzinger, P
    Campagnolo, R
    Castillo, A
    Cherlin, A
    Damjanovic, S
    Dietel, T
    Dietrich, L
    Drees, A
    Esumi, SI
    Filimonov, K
    Fomenko, K
    Fraenkel, Z
    Garabatos, C
    Glässel, P
    Hering, G
    Holeczek, J
    Kushpil, V
    Lenkeit, B
    Ludolphs, W
    Maas, A
    Marín, A
    Milosevic, J
    Milov, A
    Miskowiec, D
    Musa, L
    Panebrattsev, Y
    Petchenova, O
    Petrácek, V
    Pfeiffer, A
    Rak, J
    Ravinovich, I
    Rehak, P
    Richter, M
    Sako, H
    Schmitz, W
    Schukraft, J
    Sedykh, S
    Seipp, W
    Sharma, A
    Shimansky, S
    Slívová, J
    Specht, HJ
    Stachel, J
    Sumbera, M
    Tilsner, H
    Tserruya, I
    [J]. NUCLEAR PHYSICS A, 2003, 714 (1-2) : 124 - 144
  • [6] Azimuthal anisotropy in Au plus Au collisions at √SNN=200 GeV -: art. no. 014904
    Adams, J
    Aggarwal, MM
    Ahammed, Z
    Amonett, J
    Anderson, BD
    Arkhipkin, D
    Averichev, GS
    Badyal, SK
    Bai, Y
    Balewski, J
    Barannikova, O
    Barnby, LS
    Baudot, J
    Bekele, S
    Belaga, VV
    Bellwied, R
    Berger, J
    Bezverkhny, BI
    Bharadwaj, S
    Bhasin, A
    Bhati, AK
    Bhatia, VS
    Bichsel, H
    Bielcik, J
    Bielcikova, J
    Billmeier, A
    Bland, LC
    Blyth, CO
    Bonner, BE
    Botje, M
    Boucham, A
    Brandin, AV
    Bravar, A
    Bystersky, M
    Cadman, RV
    Cai, XZ
    Caines, H
    Sánchez, MCD
    Castillo, J
    Catu, O
    Cebra, D
    Chajecki, Z
    Chaloupka, P
    Chattopadhyay, S
    Chen, HF
    Chen, Y
    Cheng, J
    Cherney, M
    Chikanian, A
    Christie, W
    [J]. PHYSICAL REVIEW C, 2005, 72 (01):
  • [7] Adams J, 2004, PHYS REV LETT, V92, DOI 10.1103/PhysRevLett.92.052302
  • [8] Experimental and theoretical challenges in the search for the quark-gluon plasma:: The STAR Collaboration's critical assessment of the evidence from RHIC collisions
    Adams, J
    Aggarwal, MM
    Ahammed, Z
    Amonett, J
    Anderson, BD
    Arkhipkin, D
    Averichev, GS
    Badyal, SK
    Bai, Y
    Balewski, J
    Barannikova, O
    Barnby, LS
    Baudot, J
    Bekele, S
    Belaga, VV
    Bellingeri-Laurikainen, A
    Bellwied, R
    Berger, J
    Bezverkhny, BI
    Bharadwaj, S
    Bhasin, A
    Bhati, AK
    Bhatia, VS
    Bichsel, H
    Bielcik, J
    Bielcikova, J
    Billmeier, A
    Bland, LC
    Blyth, CO
    Bonner, BE
    Botje, M
    Boucham, A
    Bouchet, J
    Brandin, AV
    Bravar, A
    Bystersky, M
    Cadman, RV
    Cai, XZ
    Caines, H
    Sánchez, MCD
    Castillo, J
    Catu, O
    Cebra, D
    Chajecki, Z
    Chaloupka, P
    Chattopadhyay, S
    Chen, HF
    Chen, Y
    Cheng, J
    Cherney, M
    [J]. NUCLEAR PHYSICS A, 2005, 757 (1-2) : 102 - 183
  • [9] Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC:: Experimental evaluation by the PHENIX Collaboration
    Adcox, K
    Adler, SS
    Afanasiev, S
    Aidala, C
    Ajitanand, NN
    Akiba, Y
    Al-Jamel, A
    Alexander, J
    Amirikas, R
    Aoki, K
    Aphecetche, L
    Arai, Y
    Armendariz, R
    Aronson, SH
    Averbeck, R
    Awes, TC
    Azmoun, R
    Babintsev, V
    Baldisseri, A
    Barish, KN
    Barnes, PD
    Barrette, J
    Bassalleck, B
    Bathe, S
    Batsouli, S
    Baublis, V
    Bauer, F
    Bazilevsky, A
    Belikov, S
    Bellaiche, FG
    Belyaev, ST
    Bennett, MJ
    Berdnikov, Y
    Bhagavatula, S
    Bjorndal, MT
    Boissevain, JG
    Borel, H
    Borenstein, S
    Botelho, S
    Brooks, ML
    Brown, DS
    Bruner, N
    Bucher, D
    Buesching, H
    Bumazhnov, V
    Bunce, G
    Burward-Hoy, JM
    Butsyk, S
    Camard, X
    Carey, TA
    [J]. NUCLEAR PHYSICS A, 2005, 757 (1-2) : 184 - 283
  • [10] Energy dependence of pion and kaon production in central Pb plus Pb collisions -: art. no. 054902
    Afanasiev, SV
    Anticic, T
    Barna, D
    Bartke, J
    Barton, RA
    Behler, M
    Betev, L
    Bialkowska, H
    Billmeier, A
    Blume, C
    Blyth, CO
    Boimska, B
    Botje, M
    Bracinik, J
    Bramm, R
    Brun, R
    Buncic, P
    Cerny, V
    Cramer, JG
    Csató, P
    Dinkelaker, P
    Eckhardt, V
    Filip, P
    Fodor, Z
    Foka, P
    Freund, P
    Friese, V
    Gál, J
    Gazdzicki, M
    Georgopoulos, G
    Gladysz, E
    Hegyi, S
    Höhne, C
    Igo, G
    Jones, PG
    Kadija, K
    Karev, A
    Kolesnikov, VI
    Kollegger, T
    Kowalski, M
    Kraus, I
    Kreps, M
    van Leeuwen, M
    Lévai, P
    Malakhov, AI
    Margetis, S
    Markert, C
    Mayes, BW
    Melkumov, GL
    Mischke, A
    [J]. PHYSICAL REVIEW C, 2002, 66 (05):