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arXiv 1202.2225hep-ph
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轻子变量下电子-氘弹性散射中偏振观测量的辐射修正

Radiative corrections to polarization observables in elastic electron-deuteron scattering in leptonic variables

G. I. Gakh, M. I. Konchatnij, N. P. Merenkov

摘要:

本文在轻子变量下计算了非极化和纵向极化电子束与氘靶弹性散射中极化观测量的模型无关QED辐射修正。实验装置时,被认为是任意极化的氘核目标和应用程序导出的结果的反冲氘核的矢量或张量极化进行了讨论。计算的基础包括所有基本的费曼图的帐户,其结果的形式的Drell-Yan表示的横截面和使用的协变参数化的氘核极化状态。当事件选择允许未检测到的粒子(光子和电子-正电子对)和限制的情况下的辐射校正的数值估计被使用。

英文摘要:

The model--independent QED radiative corrections to polarization observables in elastic scattering of unpolarized and longitudinally--polarized electron beam by the deuteron target have been calculated in leptonic variables. The experimental setup when the deuteron target is arbitrarily polarized is considered and the procedure for applying derived results to the vector or tensor polarization of the recoil deuteron is discussed. The basis of the calculations consists of the account for all essential Feynman diagrams which results in the form of the Drell-Yan representation for the cross-section and use of the covariant parametrization of the deuteron polarization state. The numerical estimates of the radiative corrections are given for the case when event selection allows the undetected particles (photons and electron-positron pairs) and the restriction on the lost invariant mass is used.

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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