Azimuthal transverse single-spin asymmetries of inclusive jets and charged pions within jets from polarized-proton collisions at root s=500 GeV
文献类型：期刊论文
| 作者 | Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Ajitanand, NN; Alekseev, I; Anderson, DM; Aoyama, R |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2018 |
| 卷号 | 97期号:3页码:- |
| 关键词 | Deep-inelastic Scattering High Chi-f Sivers Asymmetries Analyzing-power Electromagnetic Calorimeter Quantum Chromodynamics Pi-0 Production Drell-yan Star Collins |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.97.032004 |
| 文献子类 | 期刊论文 |
| 英文摘要 | We report the first measurements of transverse single-spin asymmetries for inclusive jet and jet + pi(+/-) production at midrapidity from transversely polarized proton-proton collisions at root s = 500 GeV. The data were collected in 2011 with the STAR detector sampled from 23 pb(-1) integrated luminosity with an average beam polarization of 53%. Asymmetries are reported for jets with transverse momenta 6 < p(T) < 55 GeV/c and pseudorapidity vertical bar eta vertical bar < 1. Presented are measurements of the inclusive-jet azimuthal transverse single-spin asymmetry, sensitive to twist-3 initial-state quark-gluon correlators; the Collins asymmetry, sensitive to quark transversity coupled to the polarized Collins fragmentation function; and the first measurement of the "Collins-like" asymmetry, sensitive to linearly polarized gluons. Within the present statistical precision, inclusive-jet and Collins-like asymmetries are small, with the latter allowing the first experimental constraints on gluon linear polarization in a polarized proton. At higher values of jet transverse momenta, we observe the first nonzero Collins asymmetries in polarized-proton collisions, with a statistical significance of greater than 5 sigma. The results span a range of x similar to results from semi-inclusive deep-inelastic scattering but at much higher Q(2). The Collins results enable tests of universality and factorization breaking in the transverse momentum-dependent formulation of perturbative quantum chromodynamics. |
| 语种 | 英语 |
| WOS记录号 | WOS:000424057200002 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28932]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Adamczyk, L 2.Adams, JR 3.Adkins, JK 4.Agakishiev, G 5.Aggarwal, MM 6.Ahammed, Z 7.Ajitanand, NN 8.Alekseev, I 9.Anderson, DM 10.Aoyama, R |
| 推荐引用方式 GB/T 7714 | Adamczyk, L,Adams, JR,Adkins, JK,et al. Azimuthal transverse single-spin asymmetries of inclusive jets and charged pions within jets from polarized-proton collisions at root s=500 GeV[J]. PHYSICAL REVIEW D,2018,97(3):-. |
| APA | Adamczyk, L.,Adams, JR.,Adkins, JK.,Agakishiev, G.,Aggarwal, MM.,...&Zyzak, M.(2018).Azimuthal transverse single-spin asymmetries of inclusive jets and charged pions within jets from polarized-proton collisions at root s=500 GeV.PHYSICAL REVIEW D,97(3),-. |
| MLA | Adamczyk, L,et al."Azimuthal transverse single-spin asymmetries of inclusive jets and charged pions within jets from polarized-proton collisions at root s=500 GeV".PHYSICAL REVIEW D 97.3(2018):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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