Local Polarization and Isothermal Local Equilibrium in Relativistic Heavy Ion Collisions

被引：116
作者：
Becattini, F. [1 ,2 ]
Buzzegoli, M. [1 ,2 ]
Palermo, A. [1 ,2 ]
Inghirami, G. [3 ]
Karpenko, I. [4 ]
机构：
[1] Univ Firenze, Via G Sansone 1, I-50019 Sesto Fiorentino, Italy
[2] INFN Sez Firenze, Via G Sansone 1, I-50019 Sesto Fiorentino, Italy
[3] GSI Helmholtzzentrum Schwerionenforsch GmbH, Planckstr 1, D-64291 Darmstadt, Germany
[4] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Brehova 7, Prague 11519 1, Czech Republic
来源：
PHYSICAL REVIEW LETTERS | 2021年 / 127卷 / 27期
关键词：
SPIN;
D O I：
10.1103/PhysRevLett.127.272302
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We show that the inclusion of a recently found additional term of the spin polarization vector at local equilibrium which is linear in the symmetrized gradients of the velocity field, and the assumption of hadron production at constant temperature restore the quantitative agreement between hydrodynamic model predictions and local polarization measurements in relativistic heavy ion collisions at p ffiffiffiffiffiffiffi= 200 GeV. The longitudinal component of the spin polarization vector turns out to be very sensitive to the temperature value, with a good fit around 155 MeV. The implications of this finding are discussed.
引用
收藏
页数：6
相关论文
共 44 条
  • [1] Polarization of Λ ((Λ)over-bar) Hyperons along the Beam Direction in Au plus Au Collisions at √SNN=200 GeV
    Adam, J.
    Adamczyk, L.
    Adams, J. R.
    Adkins, J. K.
    Agakishiev, G.
    Aggarwal, M. M.
    Ahammed, Z.
    Alekseev, I
    Anderson, D. M.
    Aoyama, R.
    Aparin, A.
    Arkhipkin, D.
    Aschenauer, E. C.
    Ashraf, M. U.
    Atetalla, F.
    Attri, A.
    Averichev, G. S.
    Bairathi, V
    Barish, K.
    Bassill, A. J.
    Behera, A.
    Bellwied, R.
    Bhasin, A.
    Bhati, A. K.
    Bielcik, J.
    Bielcikova, J.
    Bland, L. C.
    Bordyuzhin, I. G.
    Brandenburg, J. D.
    Brandin, A., V
    Bryslawskyj, J.
    Bunzarov, I
    Butterworth, J.
    Caines, H.
    Sanchez, M. Calderon de la Barca
    Cebra, D.
    Chakaberia, I
    Chaloupka, P.
    Chan, B. K.
    Chang, F-H
    Chang, Z.
    Chankova-Bunzarova, N.
    Chatterjee, A.
    Chattopadhyay, S.
    Chen, J. H.
    Chen, X.
    Cheng, J.
    Cherney, M.
    Christie, W.
    Crawford, H. J.
    [J]. PHYSICAL REVIEW LETTERS, 2019, 123 (13)
  • [2] Global polarization of Λ hyperons in Au plus Au collisions at √sNN=200 GeV
    Adam, J.
    Adamczyk, L.
    Adams, J. R.
    Adkins, J. K.
    Agakishiev, G.
    Aggarwal, M. M.
    Ahammed, Z.
    Ajitanand, N. N.
    Alekseev, I
    Anderson, D. M.
    Aoyama, R.
    Aparin, A.
    Arkhipkin, D.
    Aschenauer, E. C.
    Ashraf, M. U.
    Atetalla, F.
    Attri, A.
    Averichev, G. S.
    Bai, X.
    Bairathi, V
    Barish, K.
    Bassin, A. J.
    Behera, A.
    Bellwied, R.
    Bhasin, A.
    Bhati, A. K.
    Bielcik, J.
    Bielcikova, J.
    Bland, L. C.
    Bordyuzhin, I. G.
    Brandenburg, J. D.
    Brandin, A., V
    Brown, D.
    Bryslawskyj, J.
    Bunzarovi, I
    Butterworth, J.
    Caines, H.
    Sanchez, M. Calderon de la Barca
    Campbell, J. M.
    Cebra, D.
    Chakaberia, I
    Chaloupka, P.
    Chang, F-H
    Chang, Z.
    Chankova-Bunzarova, N.
    Chatterjee, A.
    Chattopadhyay, S.
    Chen, J. H.
    Chen, X.
    Cheng, J.
    [J]. PHYSICAL REVIEW C, 2018, 98 (01)
  • [3] Global Λ hyperon polarization in nuclear collisions
    Adamczyk, L.
    Adkins, J. K.
    Agakishiev, G.
    Aggarwal, M. M.
    Ahammed, Z.
    Ajitanand, N. N.
    Alekseev, I.
    Anderson, D. M.
    Aoyama, R.
    Aparin, A.
    Arkhipkin, D.
    Aschenauer, E. C.
    Ashraf, M. U.
    Attri, A.
    Averichev, G. S.
    Bai, X.
    Bairathi, V.
    Behera, A.
    Bellwied, R.
    Bhasin, A.
    Bhati, A. K.
    Bhattarai, P.
    Bielcik, J.
    Bielcikova, J.
    Bland, L. C.
    Bordyuzhin, I. G.
    Bouchet, J.
    Brandenburg, J. D.
    Brandin, A. V.
    Brown, D.
    Bunzarov, I.
    Butterworth, J.
    Caines, H.
    Sanchez, M. Calderon De la Barca
    Campbell, J. M.
    Cebra, D.
    Chakaberia, I.
    Chaloupka, P.
    Chang, Z.
    Chankova-Bunzarova, N.
    Chatterjee, A.
    Chattopadhyay, S.
    Chen, X.
    Chen, J. H.
    Chen, X.
    Cheng, J.
    Cherney, M.
    Christie, W.
    Contin, G.
    Crawford, H. J.
    [J]. NATURE, 2017, 548 (7665) : 62 - +
  • [4] Spin-thermal shear coupling in a relativistic fluid
    Becattini, F.
    Buzzegoli, M.
    Palermo, A.
    [J]. PHYSICS LETTERS B, 2021, 820
  • [5] Collective Longitudinal Polarization in Relativistic Heavy-Ion Collisions at Very High Energy
    Becattini, F.
    Karpenko, Iu.
    [J]. PHYSICAL REVIEW LETTERS, 2018, 120 (01)
  • [6] A study of vorticity formation in high energy nuclear collisions
    Becattini, F.
    Inghirami, G.
    Rolando, V.
    Beraudo, A.
    Del Zanna, L.
    De Pace, A.
    Nardi, M.
    Pagliara, G.
    Chandra, V.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2015, 75 (09):
  • [7] Relativistic distribution function for particles with spin at local thermodynamical equilibrium
    Becattini, F.
    Chandra, V.
    Del Zanna, L.
    Grossi, E.
    [J]. ANNALS OF PHYSICS, 2013, 338 : 32 - 49
  • [8] Becattini F., 2021, LECT NOTES PHYS, V987, P15
  • [9] Becattini F, 2020, ANNU REV NUCL PART S, V70, P395, DOI [10.1146/annurev-nucl-021920095245, 10.1146/annurev-nucl-021920-095245]
  • [10] Polarization transfer in hyperon decays and its effect in relativistic nuclear collisions
    Becattini, Francesco
    Cao, Gaoqing
    Speranza, Enrico
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2019, 79 (09):
12345