Transverse spin-dependent azimuthal correlations of charged pion pairs measured in p up arrow plus p collisions at ,root s=500 GeV

doi:10.1016/j.physletb.2018.02.069

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

	Transverse spin-dependent azimuthal correlations of charged pion pairs measured in p up arrow plus p collisions at ,root s=500 GeV
	Adamczyk, L ; Adams, JR ; Adkins, JK ; Agakishiev, G ; Aggarwal, MM ; Ahammed, Z ; Ajitananda, NN ; Alekseev, I ; Anderson, DM ; Aoyama, R
刊名	PHYSICS LETTERS B
	2018
卷号	780 页码:332-339
关键词	Interference Fragmentation Functions Polarization Asymmetries Scattering
ISSN号	0370-2693
DOI	10.1016/j.physletb.2018.02.069
文献子类	期刊论文
英文摘要	The transversity distribution, which describes transversely polarized quarks in transversely polarized nucleons, is a fundamental component of the spin structure of the nucleon, and is only loosely constrained by global fits to existing semi-inclusive deep inelastic scattering (SIDIS) data. In transversely polarized p up arrow + p collisions it can be accessed using transverse polarization dependent fragmentation functions which give rise to azimuthal correlations between the polarization of the struck parton and the final state scalar mesons. This letter reports on spin dependent di-hadron correlations measured by the STAR experiment. The new dataset corresponds to 25 pb(-1) integrated luminosity of p up arrow + p collisions at root s = 500 GeV, an increase of more than a factor of ten compared to our previous measurement at root s = 200 GeV. Non-zero asymmetries sensitive to transversity are observed at a Q(2) of several hundred GeV and are found to be consistent with the former measurement and a model calculation. We expect that these data will enable an extraction of transversity with comparable precision to current SIDIS datasets but at much higher momentum transfers where subleading effects are suppressed. (C) 2018 The Author(s). Published by Elsevier B.V.
语种	英语
WOS记录号	WOS:000432187800052
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/29196]
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.Ajitananda, 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. Transverse spin-dependent azimuthal correlations of charged pion pairs measured in p up arrow plus p collisions at ,root s=500 GeV[J]. PHYSICS LETTERS B,2018,780:332-339.
APA	Adamczyk, L.,Adams, JR.,Adkins, JK.,Agakishiev, G.,Aggarwal, MM.,...&Zyzak, M.(2018).Transverse spin-dependent azimuthal correlations of charged pion pairs measured in p up arrow plus p collisions at ,root s=500 GeV.PHYSICS LETTERS B,780,332-339.
MLA	Adamczyk, L,et al."Transverse spin-dependent azimuthal correlations of charged pion pairs measured in p up arrow plus p collisions at ,root s=500 GeV".PHYSICS LETTERS B 780(2018):332-339.