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| Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry for W-+/- Boson Production in Polarized Proton-Proton Collisions at root s=500 GeV | |
| Aggarwal, M. M.; Ahammed, Z.; Alakhverdyants, A. V.; Cai, X. Z.（蔡翔舟）; Ma, G. L.（马国亮）; Ma, Y. G.（马余刚）; .; Wang, J. S.; Wang, X. L.; Zhang, J. B.; Zhang, W. M.; Zhang, X. P.; Zhang, Z. P.; Zhu, Y. H.; Zoulkarneev, R.; Zoulkarneeva, Y. | |
| 2011 | |
| Source Publication | PHYSICAL REVIEW LETTERS
 |
| ISSN | 0031-9007 |
| Volume | 106Issue:6 |
| Abstract | We report the first measurement of the parity-violating single-spin asymmetries for midrapidity decay positrons and electrons from W+ and W- boson production in longitudinally polarized proton-proton collisions at root s = 500 GeV by the STAR experiment at RHIC. The measured asymmetries, A(L)(W+) = -0.27 +/- 0.10(stat.) +/- 0.02(syst.) +/- 0.03(norm.) and A(L)(W-) = 0.14 +/- 0.19(stat.) +/- 0.02(syst.) +/- 0.01(norm.), are consistent with theory predictions, which are large and of opposite sign. These predictions are based on polarized quark and antiquark distribution functions constrained by polarized deep-inelastic scattering measurements. |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 应物所项目组 |
| WOS ID | WOS:000287357100008 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/9546 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Recommended Citation GB/T 7714 | Aggarwal, M. M.,Ahammed, Z.,Alakhverdyants, A. V.,et al. Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry for W-+/- Boson Production in Polarized Proton-Proton Collisions at root s=500 GeV[J]. PHYSICAL REVIEW LETTERS,2011,106(6). |
| APA | Aggarwal, M. M..,Ahammed, Z..,Alakhverdyants, A. V..,Cai, X. Z..,Ma, G. L..,...&Zoulkarneeva, Y..(2011).Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry for W-+/- Boson Production in Polarized Proton-Proton Collisions at root s=500 GeV.PHYSICAL REVIEW LETTERS,106(6). |
| MLA | Aggarwal, M. M.,et al."Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry for W-+/- Boson Production in Polarized Proton-Proton Collisions at root s=500 GeV".PHYSICAL REVIEW LETTERS 106.6(2011). |
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