Azimuthal transverse single-spin asymmetries of inclusive jets and charged pions within jets from polarized-proton collisions at root s=500 GeV

doi:10.1103/PhysRevD.97.032004

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Azimuthal transverse single-spin asymmetries of inclusive jets and charged pions within jets from polarized-proton collisions at root s=500 GeV
	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
	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
内容类型	期刊论文
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):-.