通过 $\Omega$ 和 $\phi$ 产生探测 QCD 物质的部分子动力学
核实验
2016-03-02 v1
摘要
我们报道了由相对论重离子对撞机(RHIC)上的STAR实验在核子-核子质心能量 = 7.7, 11.5, 19.6, 27 和 39 GeV 的 Au+Au 碰撞中，于中快度处测量 和 产生的结果。受这些奇异强子并合形成机制的启发，我们研究了 的比值。这些比值作为横动量()的函数，在高碰撞能量下呈现一致趋势，但在 = 19.6, 27 和 39 GeV 的外围碰撞中，以及在 11.5 GeV 中心碰撞的中间 区域 2.4-3.6 GeV/c 内，开始显示偏离。我们通过研究按组夸克数缩放的 比值，进一步经验性地评估了强子化时的奇异夸克 分布。NCQ 缩放的 比值显示，与 GeV 相比，在 11.5 GeV 中心碰撞中奇异夸克产生受抑制。在 7.7 GeV 的 0-60% 最中心碰撞中，假定为热化的奇异夸克分布形状，与更高能量下 0-10% 最中心碰撞中的分布形状显著偏离。这些特征表明，在低于 19.6 GeV 的碰撞能量下，从夸克物质到强子物质的转变中，潜在的奇异夸克动力学很可能发生了改变。
引用
@article{arxiv.1506.07605,
title = {Probing Parton Dynamics of QCD Matter with $\Omega$ and $\phi$ Production},
author = {STAR Collaboration and L. Adamczyk and J. K. Adkins and G. Agakishiev and M. M. Aggarwal and Z. Ahammed and I. Alekseev and J. Alford and A. Aparin and D. Arkhipkin and E. C. Aschenauer and G. S. Averichev and V. Bairathi and A. Banerjee and R. Bellwied and A. Bhasin and A. K. Bhati and P. Bhattarai and J. Bielcik and J. Bielcikova and L. C. Bland and I. G. Bordyuzhin and J. Bouchet and A. V. Brandin and I. Bunzarov and J. Butterworth and H. Caines and M. Calderón de la Barca Sánchez and J. M. Campbell and D. Cebra and M. C. Cervantes and I. Chakaberia and P. Chaloupka and Z. Chang and S. Chattopadhyay and J. H. Chen and X. Chen and J. Cheng and M. Cherney and W. Christie and G. Contin and H. J. Crawford and S. Das and L. C. De Silva and R. R. Debbe and T. G. Dedovich and J. Deng and A. A. Derevschikov and B. di Ruzza and L. Didenko and C. Dilks and X. Dong and J. L. Drachenberg and J. E. Draper and C. M. Du and L. E. Dunkelberger and J. C. Dunlop and L. G. Efimov and J. Engelage and G. Eppley and R. Esha and O. Evdokimov and O. Eyser and R. Fatemi and S. Fazio and P. Federic and J. Fedorisin and Z. Feng and P. Filip and Y. Fisyak and C. E. Flores and L. Fulek and C. A. Gagliardi and D. Garand and F. Geurts and A. Gibson and M. Girard and L. Greiner and D. Grosnick and D. S. Gunarathne and Y. Guo and A. Gupta and S. Gupta and W. Guryn and A. Hamad and A. Hamed and R. Haque and J. W. Harris and L. He and S. Heppelmann and S. Heppelmann and A. Hirsch and G. W. Hoffmann and D. J. Hofman and S. Horvat and B. Huang and H. Z. Huang and X. Huang and P. Huck and T. J. Humanic and G. Igo and W. W. Jacobs and H. Jang and K. Jiang and E. G. Judd and S. Kabana and D. Kalinkin and K. Kang and K. Kauder and H. W. Ke and D. Keane and A. Kechechyan and Z. H. Khan and D. P. Kikoła and I. Kisel and A. Kisiel and L. Kochenda and D. D. Koetke and T. Kollegger and L. K. Kosarzewski and A. F. Kraishan and P. Kravtsov and K. Krueger and I. Kulakov and L. Kumar and R. A. Kycia and M. A. C. Lamont and J. M. Landgraf and K. D. Landry and J. Lauret and A. Lebedev and R. Lednicky and J. H. Lee and X. Li and Z. M. Li and Y. Li and W. Li and X. Li and C. Li and M. A. Lisa and F. Liu and T. Ljubicic and W. J. Llope and M. Lomnitz and R. S. Longacre and X. Luo and G. L. Ma and R. Ma and Y. G. Ma and L. Ma and N. Magdy and R. Majka and A. Manion and S. Margetis and C. Markert and H. Masui and H. S. Matis and D. McDonald and K. Meehan and N. G. Minaev and S. Mioduszewski and D. Mishra and B. Mohanty and M. M. Mondal and D. A. Morozov and M. K. Mustafa and B. K. Nandi and Md. Nasim and T. K. Nayak and G. Nigmatkulov and L. V. Nogach and S. Y. Noh and J. Novak and S. B. Nurushev and G. Odyniec and A. Ogawa and K. Oh and V. Okorokov and D. Olvitt and B. S. Page and R. Pak and Y. X. Pan and Y. Pandit and Y. Panebratsev and B. Pawlik and H. Pei and C. Perkins and A. Peterson and P. Pile and M. Planinic and J. Pluta and N. Poljak and K. Poniatowska and J. Porter and M. Posik and A. M. Poskanzer and J. Putschke and H. Qiu and A. Quintero and S. Ramachandran and R. Raniwala and S. Raniwala and R. L. Ray and H. G. Ritter and J. B. Roberts and O. V. Rogachevskiy and J. L. Romero and A. Roy and L. Ruan and J. Rusnak and O. Rusnakova and N. R. Sahoo and P. K. Sahu and I. Sakrejda and S. Salur and J. Sandweiss and A. Sarkar and J. Schambach and R. P. Scharenberg and A. M. Schmah and W. B. Schmidke and N. Schmitz and J. Seger and P. Seyboth and N. Shah and E. Shahaliev and P. V. Shanmuganathan and M. Shao and M. K. Sharma and B. Sharma and W. Q. Shen and S. S. Shi and Q. Y. Shou and E. P. Sichtermann and R. Sikora and M. Simko and M. J. Skoby and N. Smirnov and D. Smirnov and L. Song and P. Sorensen and H. M. Spinka and B. Srivastava and T. D. S. Stanislaus and M. Stepanov and R. Stock and M. Strikhanov and B. Stringfellow and M. Sumbera and B. Summa and Z. Sun and X. M. Sun and Y. Sun and X. Sun and B. Surrow and N. Svirida and M. A. Szelezniak and Z. Tang and A. H. Tang and T. Tarnowsky and A. Tawfik and J. H. Thomas and A. R. Timmins and D. Tlusty and M. Tokarev and S. Trentalange and R. E. Tribble and P. Tribedy and S. K. Tripathy and B. A. Trzeciak and O. D. Tsai and T. Ullrich and D. G. Underwood and I. Upsal and G. Van Buren and G. van Nieuwenhuizen and M. Vandenbroucke and R. Varma and A. N. Vasiliev and R. Vertesi and F. Videbæk and Y. P. Viyogi and S. Vokal and S. A. Voloshin and A. Vossen and G. Wang and H. Wang and J. S. Wang and Y. Wang and Y. Wang and F. Wang and J. C. Webb and G. Webb and L. Wen and G. D. Westfall and H. Wieman and S. W. Wissink and R. Witt and Y. F. Wu and Z. G. Xiao and W. Xie and K. Xin and Y. F. Xu and Q. H. Xu and H. Xu and N. Xu and Z. Xu and Y. Yang and C. Yang and S. Yang and Y. Yang and Q. Yang and Z. Ye and P. Yepes and L. Yi and K. Yip and I. -K. Yoo and N. Yu and H. Zbroszczyk and W. Zha and J. B. Zhang and Z. Zhang and J. Zhang and S. Zhang and X. P. Zhang and J. Zhang and Y. Zhang and F. Zhao and J. Zhao and C. Zhong and L. Zhou and X. Zhu and Y. Zoulkarneeva and M. Zyzak},
journal= {arXiv preprint arXiv:1506.07605},
year = {2016}
}
备注
7 pages, 5 figures