On the factorization of the scattering of W bosons
On the factorization of the scattering of W bosons
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DOI：
10.1142/s0217732313300085
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发表时间：
2013-04
影响因子：
1.4
通讯作者：
R. Franceschini
中科院分区：
文献类型：
--
作者：
R. Franceschini
本文综述了将有效量子方法应用于WW散射问题的最新结果。特别回顾了在广义有效W近似(GEWA)下如何利用W玻色子计算散射振幅。讨论了精确计算与gEWA计算之间差异的物理来源和预期大小。特别关注了涉及纵向W玻色子的过程的gEWA公式的特殊性。通过对散射振幅和散射截面的显式数值计算，验证了这些形式的结果。此外，还简要讨论了用gEWA来解释和表示大型强子对撞机上的WW散射测量。
Recent results on the application of the method of the effective quanta to the case of WW scattering are reviewed. In particular, it is reviewed how effective W bosons can be used to compute scattering amplitudes in a generalized Effective W Approximation (gEWA). The physical origin and the expected size of the discrepancy between the exact computation and the gEWA computation are discussed. Particular attention is devoted to the peculiarities of the formulation of the gEWA for processes that involve longitudinal W bosons. These formal results are checked through explicit numerical calculations of both scattering amplitudes and scattering cross-sections. Furthermore, the use of the gEWA for the interpretation and for the presentation of the measurement of WW scattering at the LHC is briefly discussed.