Au+Au 碰撞中 $\Lambda$ 超子的全局极化（$\sqrt{s_{_{NN}}}$ = 200 GeV）
核实验
2018-08-09 v2
摘要
已测得在 = 200 GeV 的 Au+Au 碰撞中 超子的全局极化约为千分之几的量级，且 与 之间无显著差异。这些新结果揭示了全局极化的碰撞能量依赖性，连同先前在 = 7.7 -- 62.4 GeV 观测到的结果，并表明在最高 RHIC 碰撞能量下的非中心重离子碰撞中产生的介质具有显著涡旋。该信号与流体动力学模型和 AMPT（多相输运）模型的理论预测在粗略的定量上一致。极化在更外周的碰撞中更大，并且在 内对超子的横动量和赝 rapidity 依赖较弱。在 水平观测到极化依赖于逐事件电荷不对称性，表明初始磁场诱导的轴矢量电流可能对极化有贡献。
引用
@article{arxiv.1805.04400,
title = {Global polarization of $\Lambda$ hyperons in Au+Au collisions at $\sqrt{s_{_{NN}}}$ = 200 GeV},
author = {J. Adam and L. Adamczyk and J. R. Adams and J. K. Adkins and G. Agakishiev and M. M. Aggarwal and Z. Ahammed and N. N. Ajitanand and I. Alekseev and D. M. Anderson and R. Aoyama and A. Aparin and D. Arkhipkin and E. C. Aschenauer and M. U. Ashraf and F. Atetalla and A. Attri and G. S. Averichev and X. Bai and V. Bairathi and K. Barish and A. J. Bassill and A. Behera and R. Bellwied and A. Bhasin and A. K. Bhati and J. Bielcik and J. Bielcikova and L. C. Bland and I. G. Bordyuzhin and J. D. Brandenburg and A. V. Brandin and D. Brown and J. Bryslawskyj and I. Bunzarov and J. Butterworth and H. Caines and M. Calderón~de~la~Barca~Sánchez and J. M. Campbell and D. Cebra and I. Chakaberia and P. Chaloupka and F-H. Chang and Z. Chang and N. Chankova-Bunzarova and A. Chatterjee and S. Chattopadhyay and J. H. Chen and X. Chen and X. Chen and J. Cheng and M. Cherney and W. Christie and G. Contin and H. J. Crawford and S. Das and T. G. Dedovich and I. M. Deppner and A. A. Derevschikov and L. Didenko and C. Dilks and X. Dong and J. L. Drachenberg and J. C. Dunlop and L. G. Efimov and N. Elsey and J. Engelage and G. Eppley and R. Esha and S. Esumi and O. Evdokimov and J. Ewigleben and O. Eyser and R. Fatemi and S. Fazio and P. Federic and P. Federicova and J. Fedorisin and P. Filip and E. Finch and Y. Fisyak and C. E. Flores and L. Fulek and C. A. Gagliardi and T. Galatyuk and F. Geurts and A. Gibson and D. Grosnick and D. S. Gunarathne and Y. Guo and A. Gupta and W. Guryn and A. I. Hamad and A. Hamed and A. Harlenderova and J. W. Harris and L. He and S. Heppelmann and S. Heppelmann and N. Herrmann and A. Hirsch and L. Holub and S. Horvat and X. Huang and B. Huang and S. L. Huang and H. Z. Huang and T. Huang and T. J. Humanic and P. Huo and G. Igo and W. W. Jacobs and A. Jentsch and J. Jia and K. Jiang and S. Jowzaee and E. G. Judd and S. Kabana and D. Kalinkin and K. Kang and D. Kapukchyan and K. Kauder and H. W. Ke and D. Keane and A. Kechechyan and D. P. Kikoła and C. Kim and T. A. Kinghorn and I. Kisel and A. Kisiel and L. Kochenda and L. K. Kosarzewski and A. F. Kraishan and L. Kramarik and L. Krauth and P. Kravtsov and K. Krueger and N. Kulathunga and S. Kumar and L. Kumar and J. Kvapil and J. H. Kwasizur and R. Lacey and J. M. Landgraf and J. Lauret and A. Lebedev and R. Lednicky and J. H. Lee and X. Li and C. Li and W. Li and Y. Li and Y. Liang and J. Lidrych and T. Lin and A. Lipiec and M. A. Lisa and F. Liu and P. Liu and H. Liu and Y. Liu and T. Ljubicic and W. J. Llope and M. Lomnitz and R. S. Longacre and X. Luo and S. Luo and G. L. Ma and Y. G. Ma and L. Ma and R. Ma and N. Magdy and R. Majka and D. Mallick and S. Margetis and C. Markert and H. S. Matis and O. Matonoha and D. Mayes and J. A. Mazer and K. Meehan and J. C. Mei and N. G. Minaev and S. Mioduszewski and D. Mishra and B. Mohanty and M. M. Mondal and I. Mooney and D. A. Morozov and Md. Nasim and J. D. Negrete and J. M. Nelson and D. B. Nemes and M. Nie and G. Nigmatkulov and T. Niida and L. V. Nogach and T. Nonaka and S. B. Nurushev and G. Odyniec and A. Ogawa and K. Oh and S. Oh and V. A. Okorokov and D. Olvitt and B. S. Page and R. Pak and Y. Panebratsev and B. Pawlik and H. Pei and C. Perkins and J. Pluta and J. Porter and M. Posik and N. K. Pruthi and M. Przybycien and J. Putschke and A. Quintero and S. K. Radhakrishnan and S. Ramachandran and R. L. Ray and R. Reed and H. G. Ritter and J. B. Roberts and O. V. Rogachevskiy and J. L. Romero and L. Ruan and J. Rusnak and O. Rusnakova and N. R. Sahoo and P. K. Sahu and S. Salur and J. Sandweiss and J. Schambach and A. M. Schmah and W. B. Schmidke and N. Schmitz and B. R. Schweid and F. Seck and J. Seger and M. Sergeeva and R. Seto and P. Seyboth and N. Shah and E. Shahaliev and P. V. Shanmuganathan and M. Shao and W. Q. Shen and F. Shen and S. S. Shi and Q. Y. Shou and E. P. Sichtermann and S. Siejka and R. Sikora and M. Simko and S. Singha and N. Smirnov and D. Smirnov and W. Solyst and P. Sorensen and H. M. Spinka and B. Srivastava and T. D. S. Stanislaus and D. J. Stewart and M. Strikhanov and B. Stringfellow and A. A. P. Suaide and T. Sugiura and M. Sumbera and B. Summa and Y. Sun and X. Sun and X. M. Sun and B. Surrow and D. N. Svirida and P. Szymanski and Z. Tang and A. H. Tang and A. Taranenko and T. Tarnowsky and J. H. Thomas and A. R. Timmins and D. Tlusty and T. Todoroki and M. Tokarev and C. A. Tomkiel and S. Trentalange and R. E. Tribble and P. Tribedy and S. K. Tripathy and O. D. Tsai and B. Tu and T. Ullrich and D. G. Underwood and I. Upsal and G. Van Buren and J. Vanek and A. N. Vasiliev and I. Vassiliev and F. Videbæk and S. Vokal and S. A. Voloshin and A. Vossen and G. Wang and Y. Wang and F. Wang and Y. Wang and J. C. Webb and L. Wen and G. D. Westfall and H. Wieman and S. W. Wissink and R. Witt and Y. Wu and Z. G. Xiao and G. Xie and W. Xie and Q. H. Xu and Z. Xu and J. Xu and Y. F. Xu and N. Xu and S. Yang and C. Yang and Q. Yang and Y. Yang and Z. Ye and Z. Ye and L. Yi and K. Yip and I. -K. Yoo and N. Yu and H. Zbroszczyk and W. Zha and Z. Zhang and L. Zhang and Y. Zhang and X. P. Zhang and J. Zhang and S. Zhang and S. Zhang and J. Zhang and J. Zhao and C. Zhong and C. Zhou and L. Zhou and Z. Zhu and X. Zhu and M. Zyzak},
journal= {arXiv preprint arXiv:1805.04400},
year = {2018}
}
备注
11 pages, 8 figures, Accepted for publication in Phys. Rev. C