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Transverse single-spin asymmetry and cross section for pi(0) and eta mesons at large Feynman x in p(up arrow) + p collisions at root s=200 GeV
Adamczyk, L; Agakishiev, G; Cai, XZ(蔡翔舟); Chen, JH(陈金辉); Han, LX; Li, W; Ma, GL(马国亮); Ma, YG(马余刚); Shou, QY; Tian, J(田健); Xue, L(薛亮); Zhang, S(张松); Zhao, J; Zhong, C(钟晨); Zhu, X; Zhu, YH; Zoulkarneeva, Y
2012
Source PublicationPHYSICAL REVIEW D
ISSN1550-7998
Volume86Issue:5Pages:-
Abstract

Measurements of the differential cross section and the transverse single-spin asymmetry, A(N), vs x(F) for pi(0) and eta mesons are reported for 0.4 < x(F) < 0.75 at an average pseudorapidity of 3.68. A data sample of approximately 6.3 pb(-1) was analyzed, which was recorded during p(up arrow) + p collisions at root s = 200 GeV by the STAR experiment at RHIC. The average transverse beam polarization was 56%. The cross section for pi(0), including the previously unmeasured region of x(F) > 0.55, is consistent with a perturbative QCD prediction, and the eta/pi(0) cross-section ratio agrees with existing midrapidity measurements. For 0.55 < x(F) < 0.75, the average A(N) for eta is 0.210 +/- 0.056, and that for pi(0) is 0.081 +/- 0.016. The probability that these two asymmetries are equal is similar to 3%.

Language英语
Funding Project应物所项目组
WOS IDWOS:000308344600001
Citation statistics
Cited Times:59[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/13327
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Adamczyk, L,Agakishiev, G,Cai, XZ,et al. Transverse single-spin asymmetry and cross section for pi(0) and eta mesons at large Feynman x in p(up arrow) + p collisions at root s=200 GeV[J]. PHYSICAL REVIEW D,2012,86(5):-.
APA Adamczyk, L.,Agakishiev, G.,Cai, XZ.,Chen, JH.,Han, LX.,...&Zoulkarneeva, Y.(2012).Transverse single-spin asymmetry and cross section for pi(0) and eta mesons at large Feynman x in p(up arrow) + p collisions at root s=200 GeV.PHYSICAL REVIEW D,86(5),-.
MLA Adamczyk, L,et al."Transverse single-spin asymmetry and cross section for pi(0) and eta mesons at large Feynman x in p(up arrow) + p collisions at root s=200 GeV".PHYSICAL REVIEW D 86.5(2012):-.
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