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arXiv 0708.2634hep-ph
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弱荷电极化轻子-核子深度非弹性散射中的韧致辐射

Bremsstrahlung in weak charged current polarized lepton-nucleon deep inelastic scattering

S. N. Sevbitov, T. V. Shishkina

摘要:

轻子-核子散射过程,包括具有两个偏振光束的过程,在高能下提供了关于相互作用和粒子结构的相关信息,允许分析核子自旋结构。随着能量和实验精度的提高,用高阶辐射修正来改善玻恩截面和极化不对称性的必要性变得很大。本文着重讨论了用螺旋度振幅方法处理最低阶韧致辐射修正,并将其应用于现今实际带电流轻子-核子深度非弹性过程,从而简化了矩阵元计算过程。利用洛伦兹不变公式计算了实际光子辐射贡献。讨论了韧致辐射修正的运动学特性。

英文摘要:

The processes of lepton-nucleon scattering, including ones with both polarized beams, at high energy provide relevant information about interaction and particles structure, allowing to analyze nucleon spin structure. As energy and experimental accuracy rise, necessity to improve Born cross sections and polarized asymmetries with higher order radiative corrections becomes substantial. In this report we stress on lowest order bremsstrahlung corrections treatment using helicity amplitudes method as applied to actual nowadays charged current lepton-nucleon deep inelastic processes, that allows to simplify matrix element calculation procedure. Real photon emission contribution is calculated by means of Lorentz-invariant formalism. Kinematical peculiarities on bremsstrahlung correction 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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