在√s = 200 GeV极化p+p碰撞中Λ与Λbar超子的纵向与横向自旋转移
高能物理 - 实验
2024-01-09 v3
摘要
在极化质子-质子碰撞中，Λ（Λbar）超子的纵向与横向自旋转移分别预期对质子中（反）奇异夸克的螺旋度分布与横向度分布以及相应的极化碎裂函数敏感。我们报道了RHIC上STAR实验在√s = 200 GeV极化质子-质子碰撞中对Λ和Λbar的纵向自旋转移系数D_LL与横向自旋转移系数D_TT的改进测量。该数据集包括积分亮度为52 pb^{-1}的纵向极化质子-质子碰撞，以及具有相近积分亮度的横向极化质子-质子碰撞。两个数据集的统计量是先前结果的大约两倍，并覆盖|η_{Λ(Λbar)}| < 1.2且横向动量p_{T,Λ(Λbar)}高达8 GeV/c的运动学范围。我们还报道了超子自旋转移系数D_LL和D_TT作为超子所携带的分数量子喷注动量z的函数的首次测量，这可为极化碎裂函数提供更直接的约束。
引用
@article{arxiv.2309.14220,
title = {Longitudinal and transverse spin transfer to $\Lambda$ and $\overline{\Lambda}$ hyperons in polarized $p$+$p$ collisions at $\sqrt{s} = 200$ GeV},
author = {STAR Collaboration and M. I. Abdulhamid and B. E. Aboona and J. Adam and L. Adamczyk and J. R. Adams and I. Aggarwal and M. M. Aggarwal and Z. Ahammed and D. M. Anderson and E. C. Aschenauer and S. Aslam and J. Atchison and V. Bairathi and W. Baker and J. G. Ball Cap and K. Barish and R. Bellwied and P. Bhagat and A. Bhasin and S. Bhatta and J. Bielcik and J. Bielcikova and J. D. Brandenburg and X. Z. Cai and H. Caines and M. Calderón de la Barca Sánchez and D. Cebra and J. Ceska and I. Chakaberia and P. Chaloupka and B. K. Chan and Z. Chang and A. Chatterjee and D. Chen and J. Chen and J. H. Chen and Z. Chen and J. Cheng and Y. Cheng and S. Choudhury and W. Christie and X. Chu and H. J. Crawford and M. Csanád and G. Dale-Gau and A. Das and M. Daugherity and I. M. Deppner and A. Dhamija and L. Di Carlo and P. Dixit and X. Dong and J. L. Drachenberg and E. Duckworth and J. C. Dunlop and J. Engelage and G. Eppley and S. Esumi and O. Evdokimov and A. Ewigleben and O. Eyser and R. Fatemi and S. Fazio and C. J. Feng and Y. Feng and E. Finch and Y. Fisyak and F. A. Flor and C. Fu and C. A. Gagliardi and T. Galatyuk and T. Gao and F. Geurts and N. Ghimire and A. Gibson and K. Gopal and X. Gou and D. Grosnick and A. Gupta and W. Guryn and A. Hamed and Y. Han and S. Harabasz and M. D. Harasty and J. W. Harris and H. Harrison-Smith and W. He and X. H. He and Y. He and N. Herrmann and L. Holub and C. Hu and Q. Hu and Y. Hu and H. Huang and H. Z. Huang and S. L. Huang and T. Huang and X. Huang and Y. Huang and Y. Huang and T. J. Humanic and D. Isenhower and M. Isshiki and W. W. Jacobs and A. Jalotra and C. Jena and A. Jentsch and Y. Ji and J. Jia and C. Jin and X. Ju and E. G. Judd and S. Kabana and M. L. Kabir and S. Kagamaster and D. Kalinkin and K. Kang and D. Kapukchyan and K. Kauder and D. Keane and M. Kelsey and Y. V. Khyzhniak and D. P. Kikoła and B. Kimelman and D. Kincses and I. Kisel and A. Kiselev and A. G. Knospe and H. S. Ko and L. K. 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Okubo and B. S. Page and R. Pak and J. Pan and A. Pandav and A. K. Pandey and T. Pani and A. Paul and B. Pawlik and D. Pawlowska and C. Perkins and J. Pluta and B. R. Pokhrel and M. Posik and T. Protzman and V. Prozorova and N. K. Pruthi and M. Przybycien and J. Putschke and Z. Qin and H. Qiu and A. Quintero and C. Racz and S. K. Radhakrishnan and N. Raha and A. Rana and R. L. Ray and R. Reed and H. G. Ritter and C. W. Robertson and M. Robotkova and M. A. Rosales Aguilar and D. Roy and P. Roy Chowdhury and L. Ruan and A. K. Sahoo and N. R. Sahoo and H. Sako and S. Salur and S. Sato and W. B. Schmidke and N. Schmitz and F-J. Seck and J. Seger and R. Seto and P. Seyboth and N. Shah and P. V. Shanmuganathan and T. Shao and M. Sharma and N. Sharma and R. Sharma and S. R. Sharma and A. I. Sheikh and D. Shen and D. Y. Shen and K. Shen and S. S. Shi and Y. Shi and Q. Y. Shou and F. Si and J. Singh and S. Singha and P. Sinha and M. J. Skoby and N. Smirnov and Y. Söhngen and Y. Song and B. Srivastava and T. D. S. Stanislaus and M. Stefaniak and D. J. Stewart and B. Stringfellow and Y. Su and A. A. P. Suaide and M. Sumbera and C. Sun and X. Sun and Y. Sun and Y. Sun and B. Surrow and Z. W. Sweger and P. R. Szymanski and A. Tamis and A. H. Tang and Z. Tang and T. Tarnowsky and J. H. Thomas and A. R. Timmins and D. Tlusty and T. Todoroki and C. A. Tomkiel and S. Trentalange and R. E. Tribble and P. Tribedy and T. Truhlar and B. A. Trzeciak and O. D. Tsai and C. Y. Tsang and Z. Tu and J. Tyler and T. Ullrich and D. G. Underwood and I. Upsal and G. Van Buren and J. Vanek and I. Vassiliev and V. Verkest and F. Videbæk and S. A. Voloshin and F. Wang and G. Wang and J. S. Wang and J. Wang and X. Wang and Y. Wang and Y. Wang and Y. Wang and Z. Wang and J. C. Webb and P. C. Weidenkaff and G. D. Westfall and D. Wielanek and H. Wieman and G. Wilks and S. W. Wissink and R. Witt and J. Wu and J. Wu and X. Wu and X. Wu and Y. Wu and B. Xi and Z. G. Xiao and G. Xie and W. Xie and H. Xu and N. Xu and Q. H. Xu and Y. Xu and Y. Xu and Z. Xu and Z. Xu and G. Yan and Z. Yan and C. Yang and Q. Yang and S. Yang and Y. Yang and Z. Ye and Z. Ye and L. Yi and K. Yip and Y. Yu and H. Zbroszczyk and W. Zha and C. Zhang and D. Zhang and J. Zhang and S. Zhang and W. Zhang and X. Zhang and Y. Zhang and Y. Zhang and Y. Zhang and Y. Zhang and Z. J. Zhang and Z. Zhang and Z. Zhang and F. Zhao and J. Zhao and M. Zhao and C. Zhou and J. Zhou and S. Zhou and Y. Zhou and X. Zhu and M. Zurek and M. Zyzak},
journal= {arXiv preprint arXiv:2309.14220},
year = {2024}
}