Observation of Global Hyperon Polarization in Ultrarelativistic Heavy-Ion Collisions

被引：0

作者：

Upsal, Isaac ^{[1
]}

Adamczyk, L. ^{[2
]}

Adkins, J. K. ^{[21
]}

Agakishiev, G. ^{[19
]}

Aggarwal, M. M. ^{[33
]}

Ahammed, Z. ^{[50
]}

Alekseev, I. ^{[17
]}

Aparin, A. ^{[19
]}

Arkhipkin, D. ^{[4
]}

Aschenauer, E. C. ^{[4
]}

Ashraf, M. U. ^{[47
]}

Attri, A. ^{[33
]}

Averichev, G. S. ^{[19
]}

Bai, X. ^{[8
]}

Bairathi, V. ^{[29
]}

Bellwied, R. ^{[46
]}

Bhasin, A. ^{[18
]}

Bhati, A. K. ^{[33
]}

Bhattarai, P. ^{[45
]}

Bielcik, J. ^{[11
]}

Bielcikova, J. ^{[12
]}

Bland, L. C. ^{[4
]}

Bordyuzhin, I. G. ^{[17
]}

Bouchet, J. ^{[20
]}

Brandenburg, J. D. ^{[38
]}

Brandin, A. V. ^{[28
]}

Bunzarov, I. ^{[19
]}

Butterworth, J. ^{[38
]}

Caines, H. ^{[54
]}

Sanchez, M. Calderon de la Barca ^{[6
]}

Campbell, J. M. ^{[31
]}

Cebra, D. ^{[6
]}

Chakaberia, I. ^{[4
]}

Chaloupka, P. ^{[11
]}

Chang, Z. ^{[44
]}

Chatterjee, A. ^{[50
]}

Chattopadhyay, S. ^{[50
]}

Chen, X. ^{[23
]}

Chen, J. H. ^{[41
]}

Cheng, J. ^{[47
]}

Cherney, M. ^{[10
]}

Christie, W. ^{[4
]}

Contin, G. ^{[24
]}

Crawford, H. J. ^{[5
]}

Das, S. ^{[14
]}

De Silva, L. C. ^{[10
]}

Debbe, R. R. ^{[4
]}

Dedovich, T. G. ^{[19
]}

Deng, J. ^{[40
]}

Derevschikov, A. A. ^{[35
]}

机构：

[1] Ohio State Univ, 191 W Woodruff Ave, Columbus, OH 43210 USA

[2] AGH Univ Sci & Technol, FPACS, PL-30059 Krakow, Poland

[3] Argonne Natl Lab, Argonne, IL 60439 USA

[4] Brookhaven Natl Lab, Upton, NY 11973 USA

[5] Univ Calif Berkeley, Berkeley, CA 94720 USA

[6] Univ Calif Davis, Davis, CA 95616 USA

[7] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[8] Cent China Normal Univ, Wuhan 430079, Hubei, Peoples R China

[9] Univ Illinois, Chicago, IL 60607 USA

[10] Creighton Univ, Omaha, NE 68178 USA

[11] Czech Tech Univ, FNSPE, Prague 11519, Czech Republic

[12] Nucl Phys Inst ASCR, Prague 25068, Czech Republic

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

[14] Inst Phys, Bhubaneswar 751005, Orissa, India

[15] Indian Inst Technol, Mumbai 400076, Maharashtra, India

[16] Indiana Univ, Bloomington, IN 47408 USA

[17] Alikhanov Inst Theoret & Expt Phys, Moscow 117218, Russia

[18] Univ Jammu, Jammu 180001, India

[19] Joint Inst Nucl Res, Dubna 141980, Russia

[20] Kent State Univ, Kent, OH 44242 USA

[21] Univ Kentucky, Lexington, KY 40506 USA

[22] Korea Inst Sci & Technol Informat, Daejeon 305701, South Korea

[23] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China

[24] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[25] Lehigh Univ, Bethlehem, PA 18015 USA

[26] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[27] Michigan State Univ, E Lansing, MI 48824 USA

[28] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia

[29] Natl Inst Sci Educ & Res, Bhubaneswar 751005, Orissa, India

[30] Natl Cheng Kung Univ, Tainan 70101, Taiwan

[31] Ohio State Univ, Columbus, OH 43210 USA

[32] Inst Nucl Phys PAN, PL-31342 Krakow, Poland

[33] Panjab Univ, Chandigarh 160014, India

[34] Penn State Univ, University Pk, PA 16802 USA

[35] Inst High Energy Phys, Protvino 142281, Russia

[36] Purdue Univ, W Lafayette, IN 47907 USA

[37] Pusan Natl Univ, Pusan 46241, South Korea

[38] Rice Univ, Houston, TX 77251 USA

[39] Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China

[40] Shandong Univ, Jinan 250100, Shandong, Peoples R China

[41] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[42] SUNY Stony Brook, Stony Brook, NY 11794 USA

[43] Temple Univ, Philadelphia, PA 19122 USA

[44] Texas A&M Univ, College Stn, TX 77843 USA

[45] Univ Texas Austin, Austin, TX 78712 USA

[46] Univ Houston, Houston, TX 77204 USA

[47] Tsinghua Univ, Beijing 100084, Peoples R China

[48] US Naval Acad, Annapolis, MD 21402 USA

[49] Valparaiso Univ, Valparaiso, IN 46383 USA

[50] Variable Energy Cyclotron Ctr, Kolkata 700064, India

来源：

NUCLEAR PHYSICS A | 2017年 / 967卷

关键词：

D O I：

10.1016/j.nuclphysa.2017.05.118

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：

Collisions between heavy nuclei at ultra-relativistic energies form a color-deconfined state of matter known as the quark-gluon plasma. This state is well described by hydrodynamics, and non-central collisions are expected to produce a fluid characterized by strong vorticity in the presence of strong external magnetic fields. The STAR Collaboration at Brookhaven National Laboratory's Relativistic Heavy Ion Collider (RHIC) has measured collisions between gold nuclei at center of mass energies root S-NN = 7.7 200 GeV. We report the first observation of globally polarized A and A hyperons, aligned with the angular momentum of the colliding system. These measurements provide important information on partonic spin-orbit coupling, the vorticity of the quark-gluon plasma, and the magnetic field generated in the collision.

引用

页码：760 / 763

页数：4

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