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arXiv 0801.1592hep-ph
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作为高能$e^+ e^-$对撞机校准过程的$2γ$和$3γ$湮灭

$2γ$ and $3γ$ annihilation as calibration processes for high energy $e^+ e^-$ colliders

E. Bartos, S. Bakmaev, E. A. Kuraev, M. G. Shatnev, M. Secansky

摘要:

在高能电子正电子湮没过程中,得到了末态光子大角度发射的运动学玻恩微分截面及其最低阶辐射修正。考虑到在共线运动学中可能出现的软光子和硬光子的发射,我们证明了Drell-Yan形式的微分截面与初始轻子的非单重态结构函数的有效性.得到了对截面的主导贡献和次主导贡献。给出了相关的数值估计。

英文摘要:

Born differential cross sections and the lowest-order radiative correction to them are obtained in the kinematics of large-angle final photons emission in high-energy electron-positron annihilation processes. Taking into account possible emission of real soft and hard photons in collinear kinematics we show the validity of the Drell-Yan form of differential cross section with the nonsinglet structure functions of initial leptons. The leading and next-to leading contribution to the cross sections is obtained. The relevant numerical estimations are presented.

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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