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arXiv 1006.0445hep-exnucl-ex
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STAR W计划:新结果和未来测量

The STAR W Program : New Results and Future Measurements

Joseph Seele

摘要:

RHIC纵向极化p+p碰撞中$W^\pm$玻色子的产生为研究质子海夸克自旋分布的自旋味不对称性提供了一种新的手段。详细的W $^\pm$事件选择通过$e^\pm$衰变通道中快度,随着生产截面和宇称违反单自旋不对称性,$A_L$,从星合作的2009年数据集在$\sqrt{s} = 500$ GeV的初步结果。最后,对未来运行的预期灵敏度进行了讨论。

英文摘要:

The production of $W^\pm$ bosons in longitudinally polarized p+p collisions at RHIC provides a new means of studying the spin-flavour asymmetries of the proton sea quark spin distributions. Details of the W$^\pm$ event selection through the $e^\pm$ decay channel at mid-rapidity are presented, along with preliminary results for the production cross section and parity-violating single-spin asymmetry, $A_L$, from the STAR Collaboration's 2009 data set at $\sqrt{s} = 500$ GeV. Lastly, the expected sensitivities for future running are discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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