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
文献类型：期刊论文
| 作者 | 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 |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2012 |
| 卷号 | 86期号:5 |
| ISSN号 | 1550-7998 |
| 英文摘要 | 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%. |
| 语种 | 英语 |
| WOS记录号 | WOS:000308344600001 |
| 公开日期 | 2013-12-05 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/13327]  |
| 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 |
| 推荐引用方式 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). |
入库方式： OAI收割
来源：上海应用物理研究所
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