Global spin alignment of vector mesons in heavy ion collisions

被引：8

作者：

Sheng, Xin-Li ^{[1
]}

Liang, Zuo-Tang ^{[2
]}

Wang, Qun ^{[3
]}

机构：

[1] INFN Firenze, Via Giovanni Sansone 1, I-50019 Sesto Fiorentino, FI, Italy

[2] Shandong Univ, Inst Frontier & Interdisciplinary Sci, Key Lab Particle Phys & Particle Irradiat, Minist Educ, Qingdao 266237, Peoples R China

[3] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China

来源：

ACTA PHYSICA SINICA | 2023年 / 72卷 / 07期

基金：

中国国家自然科学基金;

关键词：

global spin polarization; spin alignment of vector mesons; spin-orbit coupling; quark coalescence model; heavy ion collisions; POLARIZATION;

D O I：

10.7498/aps.72.20230071

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In non-central relativistic heavy-ion collisions, the large initial orbital angular momentum results in strong vorticity fields in the quark-gluon plasma, which polarize partons through the spin-orbit coupling. The global polarization of quark matter will be converted to the global polarization of baryons and the global spin alignment of vector mesons. The spin alignment refers to the rho(00) element of the spin density matrix for vector mesons. When a vector meson decays to two pseudoscalar mesons, the polar angle distribution for the decay product depends on rho(00) , through which the spin alignment can be measured. Theoretical studies show that the global spin polarization of baryons reflects the space-time average of the quark polarization, while the spin alignment of vector mesons reflects the local phase space correlation between the polarization of quark and antiquark. In this article, we review recent theoretical works about the spin alignment of vector mesons. We consider a non-relativistic quark coalescence model in spin and phase space. Within this model, the spin alignment of the vector meson can be described through the phase space correlation of quark's and antiquark's polarization. The contributions to the spin alignment of 0 mesons from vorticity fields, electromagnetic fields, and effective phi meson fields are discussed. The spin alignment of vector mesons opens a new window for the properties of strong interaction fields in heavy-ion collisions.

引用

页数：12

共 31 条

[1]

Abdallah M S, 2022, NATURE, V614, P355

[2] Measurement of global polarization of Λ hyperons in few-GeV heavy-ion collisions [J].

Abou Yassine, R. ;

Adamczewski-Musch, J. ;

Asal, C. ;

Becker, M. ;

Belounnas, A. ;

Blanco, A. ;

Blume, C. ;

Chlad, L. ;

Chudoba, P. ;

Ciepal, I ;

Cordts, M. ;

Dreyer, J. ;

Esmail, W. A. ;

Fabbietti, L. ;

Floersheimer, H. ;

Fonte, P. ;

Friese, J. ;

Froehlich, I ;

Foertsch, J. ;

Galatyuk, T. ;

Gniazdowski, T. ;

Greifenhagen, R. ;

Grunwald, M. ;

Gumberidze, M. ;

Harabasz, S. ;

Heinz, T. ;

Hoehne, C. ;

Hojeij, F. ;

Holzmann, R. ;

Huck, H. ;

Idzik, M. ;

Kaempfer, B. ;

Kampert, K-H ;

Kardan, B. ;

Kedych, V ;

Koenig, I ;

Koenig, W. ;

Kohls, M. ;

Kolas, J. ;

Kornakov, G. ;

Kotte, R. ;

Kres, I ;

Krueger, W. ;

Kugler, A. ;

Lalik, R. ;

Lebedev, S. ;

Linev, S. ;

Linz, F. ;

Lopes, L. ;

Lorenz, M. .

PHYSICS LETTERS B, 2022, 835

[3] Evidence of Spin-Orbital Angular Momentum Interactions in Relativistic Heavy-Ion Collisions [J].

Acharya, S. ;

Adamova, D. ;

Adler, A. ;

Adolfsson, J. ;

Aggarwal, M. M. ;

Rinella, G. Aglieri ;

Agnello, M. ;

Agrawal, N. ;

Ahammed, Z. ;

Ahmad, S. ;

Ahn, S. U. ;

Akindinov, A. ;

Al-Turany, M. ;

Alam, S. N. ;

Albuquerque, D. S. D. ;

Aleksandrov, D. ;

Alessandro, B. ;

Alfanda, H. M. ;

Alfaro Molina, R. ;

Ali, B. ;

Ali, Y. ;

Alici, A. ;

Alkin, A. ;

Alme, J. ;

Alt, T. ;

Altenkamper, L. ;

Altsybeev, I ;

Anaam, M. N. ;

Andrei, C. ;

Andreou, D. ;

Andrews, H. A. ;

Andronic, A. ;

Angeletti, M. ;

Anguelov, V ;

Anson, C. ;

Anticic, T. ;

Antinori, F. ;

Antonioli, P. ;

Anwar, R. ;

Apadula, N. ;

Aphecetche, L. ;

Appelshaeuser, H. ;

Arcelli, S. ;

Arnaldi, R. ;

Arratia, M. ;

Arsene, I. C. ;

Arslandok, M. ;

Augustinus, A. ;

Averbeck, R. ;

Aziz, S. .

PHYSICAL REVIEW LETTERS, 2020, 125 (01)

[4] Global Polarization of Ξ and Ω Hyperons in Au plus Au Collisions at √SNN=200 GeV [J].

Adam, J. ;

Adamczyk, L. ;

Adams, J. R. ;

Adkins, J. K. ;

Agakishiev, G. ;

Aggarwal, M. M. ;

Ahammed, Z. ;

Alekseev, I ;

Anderson, D. M. ;

Aparin, A. ;

Aschenauer, E. C. ;

Ashraf, M. U. ;

Atetalla, F. G. ;

Attri, A. ;

Averichev, G. S. ;

Bairathi, V ;

Barish, K. ;

Behera, A. ;

Bellwied, R. ;

Bhasin, A. ;

Bielcik, J. ;

Bielcikova, J. ;

Bland, L. C. ;

Bordyuzhin, I. G. ;

Brandenburg, J. D. ;

Brandin, A., V ;

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. ;

Chen, D. ;

Chen, J. ;

Chen, J. H. ;

Chen, X. ;

Chen, Z. ;

Cheng, J. ;

Cherney, M. ;

Chevalier, M. ;

Choudhury, S. ;

Christie, W. ;

Chu, X. ;

Crawford, H. J. ;

Csanad, M. .

PHYSICAL REVIEW LETTERS, 2021, 126 (16)

[5] Global polarization of Λ hyperons in Au plus Au collisions at √sNN=200 GeV [J].

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. .

PHYSICAL REVIEW C, 2018, 98 (01)

[6] Global Λ hyperon polarization in nuclear collisions [J].

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. .

NATURE, 2017, 548 (7665) :62-+

[7] Deep inelastic leptoproduction of spin-one hadrons [J].

Bacchetta, A ;

Mulders, PJ .

PHYSICAL REVIEW D, 2000, 62 (11) :1-14

[8] Angular momentum conservation in heavy ion collisions at very high energy [J].

Becattini, F. ;

Piccinini, F. ;

Rizzo, J. .

PHYSICAL REVIEW C, 2008, 77 (02)

[9] Polarization probes of vorticity in heavy ion collisions [J].

Betz, Barbara ;

Gyulassy, Miklos ;

Torrieri, Giorgio .

PHYSICAL REVIEW C, 2007, 76 (04)

[10] Towards the experimental clarification of quarkonium polarization [J].

Faccioli, Pietro ;

Lourenco, Carlos ;

Seixas, Joao ;

Woehri, Hermine K. .

EUROPEAN PHYSICAL JOURNAL C, 2010, 69 (3-4) :657-673

← 1 2 3 4 →