Examination of directed flow as a signature of the softest point of the equation of state in QCD matter

被引：68

作者：

Nara, Yasushi ^{[1
,2
]}

Niemi, Harri ^{[3
]}

Ohnishi, Akira ^{[4
]}

Stoecker, Horst ^{[2
,3
,5
]}

机构：

[1] Akita Int Univ, Yuwa, Akita 0101292, Japan

[2] Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany

[3] Goethe Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany

[4] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan

[5] GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany

来源：

PHYSICAL REVIEW C | 2016年 / 94卷 / 03期

关键词：

QUARK-GLUON PLASMA; HEAVY-ION COLLISIONS; PHASE-TRANSITION; ELLIPTIC FLOW; SHOCK-WAVES; PERSPECTIVE; DEPENDENCE; COMPONENT;

D O I：

10.1103/PhysRevC.94.034906

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：

We analyze the directed flow of protons and pions in high-energy heavy-ion collisions in the incident energy range from root s(NN) = 7.7 to 27 GeV within amicroscopic transport model. Standard hadronic transport approaches do not describe the collapse of directed flow below root s(NN) similar or equal to 20 GeV. By contrast, a model that simulates effects of a softening of the equation of state descibes well the behavior of directed flow data recently obtained by the STAR Collaboration [Phys. Rev. Lett. 112, 162301 (2014)]. We give a detailed analysis of how directed flow is generated. Particularly, we found that softening of the effective equation of state at the overlapping region of two nuclei, i.e., the reaction stages where the system reaches high baryon density state, is needed to explain the observed collapse of proton directed flow within a hadronic transport approach.

引用

页数：10

共 65 条

[1] Beam-Energy Dependence of the Directed Flow of Protons, Antiprotons, and Pions in Au plus Au Collisions [J].

Adamczyk, L. ;

Adkins, J. K. ;

Agakishiev, G. ;

Aggarwal, M. M. ;

Ahammed, Z. ;

Alekseev, I. ;

Alford, J. ;

Anson, C. D. ;

Aparin, A. ;

Arkhipkin, D. ;

Aschenauer, E. C. ;

Averichev, G. S. ;

Banerjee, A. ;

Beavis, D. R. ;

Bellwied, R. ;

Bhasin, A. ;

Bhati, A. K. ;

Bhattarai, P. ;

Bichsel, H. ;

Bielcik, J. ;

Bielcikova, J. ;

Bland, L. C. ;

Bordyuzhin, I. G. ;

Borowski, W. ;

Bouchet, J. ;

Brandin, A. V. ;

Brovko, S. G. ;

Bueltmann, S. ;

Bunzarov, I. ;

Burton, T. P. ;

Butterworth, J. ;

Caines, H. ;

Sanchez, M. Calderon de la Barca ;

Cebra, D. ;

Cendejas, R. ;

Cervantes, M. C. ;

Chaloupka, P. ;

Chang, Z. ;

Chattopadhyay, S. ;

Chen, H. F. ;

Chen, J. H. ;

Chen, L. ;

Cheng, J. ;

Cherney, M. ;

Chikanian, A. ;

Christie, W. ;

Chwastowski, J. ;

Codrington, M. J. M. ;

Contin, G. ;

Cramer, J. G. .

PHYSICAL REVIEW LETTERS, 2014, 112 (16)

[2] Energy Dependence of Moments of Net-Proton Multiplicity Distributions at RHIC [J].

Adamczyk, L. ;

Adkins, J. K. ;

Agakishiev, G. ;

Aggarwal, M. M. ;

Ahammed, Z. ;

Alekseev, I. ;

Alford, J. ;

Anson, C. D. ;

Aparin, A. ;

Arkhipkin, D. ;

Aschenauer, E. C. ;

Averichev, G. S. ;

Balewski, J. ;

Banerjee, A. ;

Bamovska, Z. ;

Beavis, D. R. ;

Bellwied, R. ;

Bhasin, A. ;

Bhati, A. K. ;

Bhattarai, P. ;

Bichsel, H. ;

Bielcik, J. ;

Bielcikova, J. ;

Bland, L. C. ;

Bordyuzhin, I. G. ;

Borowski, W. ;

Bouchet, J. ;

Brandin, A. V. ;

Brovko, S. G. ;

Bueltmann, S. ;

Bunzarov, I. ;

Burton, T. P. ;

Butterworth, J. ;

Caines, H. ;

de la Barca Sanchez, M. Calderon ;

Cebra, D. ;

Cendejas, R. ;

Cervantes, M. C. ;

Chaloupka, P. ;

Chang, Z. ;

Chattopadhyay, S. ;

Chen, H. E. ;

Chen, J. H. ;

Chen, L. ;

Cheng, J. ;

Chemey, M. ;

Chikanian, A. ;

Christie, W. ;

Chwastowski, J. ;

Codrington, M. J. M. .

PHYSICAL REVIEW LETTERS, 2014, 112 (03)

[3] Inclusive charged hadron elliptic flow in Au plus Au collisions at √sNN=7.7-39 GeV [J].

Adamczyk, L. ;

Agakishiev, G. ;

Aggarwal, M. M. ;

Ahammed, Z. ;

Alakhverdyants, A. V. ;

Alekseev, I. ;

Alford, J. ;

Anderson, B. D. ;

Anson, C. D. ;

Arkhipkin, D. ;

Aschenauer, E. ;

Averichev, G. S. ;

Balewski, J. ;

Banerjee, A. ;

Barnovska, Z. ;

Beavis, D. R. ;

Bellwied, R. ;

Betancourt, M. J. ;

Betts, R. R. ;

Bhasin, A. ;

Bhati, A. K. ;

Bichsel, H. ;

Bielcik, J. ;

Bielcikova, J. ;

Bland, L. C. ;

Bordyuzhin, I. G. ;

Borowski, W. ;

Bouchet, J. ;

Brandin, A. V. ;

Brovko, S. G. ;

Bruna, E. ;

Bueltmann, S. ;

Bunzarov, I. ;

Burton, T. P. ;

Butterworth, J. ;

Cai, X. Z. ;

Caines, H. ;

Sanchez, M. Calderon de la Barca ;

Cebra, D. ;

Cendejas, R. ;

Cervantes, M. C. ;

Chaloupka, P. ;

Chang, Z. ;

Chattopadhyay, S. ;

Chen, H. F. ;

Chen, J. H. ;

Chen, J. Y. ;

Chen, L. ;

Cheng, J. ;

Cherney, M. .

PHYSICAL REVIEW C, 2012, 86 (05)

[4] Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC:: Experimental evaluation by the PHENIX Collaboration [J].

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 .

NUCLEAR PHYSICS A, 2005, 757 (1-2) :184-283

[5] Directed and elliptic flow of charged pions and protons in Pb plus Pb collisions at 40A and 158A GeV -: art. no. 034903 [J].

Alt, C ;

Anticic, T ;

Baatar, B ;

Barna, D ;

Bartke, J ;

Behler, M ;

Betev, L ;

Bialkowska, H ;

Billmeier, A ;

Blume, C ;

Boimska, B ;

Borghini, N ;

Botje, M ;

Bracinik, J ;

Bramm, R ;

Brun, R ;

Buncic, P ;

Cerny, V ;

Chvala, O ;

Cooper, GE ;

Cramer, JG ;

Csató, P ;

Dinh, PM ;

Dinkelaker, P ;

Eckardt, V ;

Filip, P ;

Fodor, Z ;

Foka, P ;

Freund, P ;

Friese, V ;

Gál, J ;

Gazdzicki, M ;

Georgopoulos, G ;

Gladysz, E ;

Hegyi, S ;

Höhne, C ;

Jacobs, P ;

Kadija, K ;

Karev, A ;

Kniege, S ;

Kolesnikov, VI ;

Kollegger, T ;

Korus, R ;

Kowalski, M ;

Kraus, I ;

Kreps, M ;

van Leeuwen, M ;

Lévai, P ;

Malakhov, AI ;

Markert, C .

PHYSICAL REVIEW C, 2003, 68 (03) :349031-3490332

[6]

[Anonymous], ARXIV10072613 STAR C

[7] The order of the quantum chromodynamics transition predicted by the standard model of particle physics [J].

Aoki, Y. ;

Endrodi, G. ;

Fodor, Z. ;

Katz, S. D. ;

Szabo, K. K. .

NATURE, 2006, 443 (7112) :675-678

[8] Directed and elliptic flow in 158GeV/nucleon Pb+Pb collisions [J].

Appelshauser, H ;

Bachler, J ;

Bailey, SJ ;

Barnby, LS ;

Bartke, J ;

Barton, RA ;

Bialkowska, H ;

Blyth, CO ;

Bock, R ;

Bormann, C ;

Brady, FP ;

Brockmann, R ;

Buncic, N ;

Buncic, P ;

Caines, HL ;

Cebra, D ;

Cooper, GE ;

Cramer, JG ;

Csato, P ;

Dunn, J ;

Eckardt, V ;

Eckhardt, F ;

Ferguson, MI ;

Fischer, HG ;

Flierl, D ;

Fodor, Z ;

Foka, P ;

Freund, P ;

Friese, V ;

Fuchs, M ;

Gabler, F ;

Gal, J ;

Gazdzicki, M ;

Gladysz, E ;

Grebieszkow, J ;

Gunther, J ;

Harris, JW ;

Hegyi, S ;

Henkel, T ;

Hill, LA ;

Huang, I ;

Hummler, H ;

Igo, G ;

Irmscher, D ;

Jacobs, P ;

Jones, PG ;

Kadija, K ;

Kolesnikov, VI ;

Kowalski, M ;

Lasiuk, B .

PHYSICAL REVIEW LETTERS, 1998, 80 (19) :4136-4140

[9] Quark-gluon plasma and color glass condensate at RHIC?: The perspective from the BRAHMS experiment [J].

Arsene, I ;

Bearden, IG ;

Beavis, D ;

Besliu, C ;

Budick, B ;

Boggild, H ;

Chasman, C ;

Christensen, CH ;

Christiansen, P ;

Cibor, J ;

Debbe, R ;

Enger, E ;

Gaardhoje, JJ ;

Germinario, M ;

Hansen, O ;

Holm, A ;

Holme, AK ;

Hagel, K ;

Ito, H ;

Jakobsen, E ;

Jipa, A ;

Jundt, F ;

Jordre, JI ;

Jorgensen, CE ;

Karabowicz, R ;

Kim, EJ ;

Kozik, T ;

Larsen, TM ;

Lee, JH ;

Lee, YK ;

Lindahl, S ;

Lovhoiden, G ;

Majka, Z ;

Makeev, A ;

Mikelsen, M ;

Murray, MJ ;

Natowitz, J ;

Neumann, B ;

Nielsen, BS ;

Ouerdane, D ;

Planeta, R ;

Rami, F ;

Ristea, C ;

Ristea, O ;

Röhrich, D ;

Samset, BH ;

Sandberg, D ;

Sanders, SJ ;

Scheetz, RA ;

Staszel, P .

NUCLEAR PHYSICS A, 2005, 757 (1-2) :1-27

[10] The PHOBOS perspective on discoveries at RHIC [J].

Back, BB ;

Baker, MD ;

Ballintijn, M ;

Barton, DS ;

Becker, B ;

Betts, RR ;

Bickley, AA ;

Bindel, R ;

Budzanowski, A ;

Busza, W ;

Carroll, A ;

Chai, Z ;

Decowski, MP ;

García, E ;

Gburek, T ;

George, NK ;

Gulbrandsen, K ;

Gushue, S ;

Halliwell, C ;

Hamblen, J ;

Harrington, AS ;

Hauer, A ;

Heintzelman, GA ;

Henderson, C ;

Hofman, DJ ;

Hollis, RS ;

Holynski, C ;

Holzman, B ;

Iordanova, A ;

Johnson, E ;

Kane, JL ;

Katzy, J ;

Khan, N ;

Kucewicz, W ;

Kulinich, P ;

Kuo, CM ;

Lee, JW ;

Lin, WT ;

Manly, S ;

McLeod, D ;

Mignerey, AC ;

Nouicer, R ;

Olszewski, A ;

Pak, R ;

Park, IC ;

Pernegger, H ;

Reed, C ;

Remsberg, LP ;

Reuter, A ;

Roland, C .

NUCLEAR PHYSICS A, 2005, 757 (1-2) :28-101

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