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Single-Spin Asymmetry of Inclusive γ Production in pp Interactions at 200 GeV/c

机译:pp相互作用下200 GeV / c时包含γ的单旋不对称性

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摘要

From the data of Fermilab polarization experiment E704, the analyzing power A_N~γ of inclusively produced photons was extracted. It is small, of the order of 2–4%. The analyzing power of "leading" photons (the fastest in π~0 → γγ decay) is a factor of 2 higher than A_N~γ assuming a definite model for xF dependence of A_N~γ. A Monte Carlo simulation is performed in order to see effects at higher statistics than in the E704 experiment. This simulation showed that the process of inclusive photons may be used as a basis for future polarimetry at polarized colliders. The example of one local photon polarimeter at RHIC is discussed.
机译:从费米实验室偏振实验E704的数据中,提取出包含光子的分析能力A_N〜γ。它很小,约为2-4%。假设A_N〜γ的xF依赖模型是确定的,“超前”光子(π〜0→γγ衰减最快)的分析能力比A_N〜γ高2倍。进行蒙特卡洛模拟,以便以比E704实验更高的统计量查看效果。该模拟表明,包容性光子的过程可用作将来在偏振对撞机上进行偏振分析的基础。讨论了一种在RHIC上的局部光子偏振计的示例。

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