About this Physics and Astronomy article
Partial Wave Amplitude Basis and Selection Rules in Effective Field Theories by Jiang, Minyuan; Shu, Jing; Xiao, Ming-Lei; Zheng, Yu-Hui is a Physics and Astronomy article available to read on EtoBox.
We derive the generalized partial wave expansion for N→M scattering amplitude in terms of spinor helicity variables. The basis amplitudes of the expansion with definite angular momentum j consist of the Poincaré Clebsch-Gordan coefficients. Moreover, we obtain a series of selection rules that restrict the anomalous dimension matrix of effective operators and how effective operators contribute to some 2→N amplitudes at the loop level.
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- Author
- Jiang, Minyuan; Shu, Jing; Xiao, Ming-Lei; Zheng, Yu-Hui
- Publisher
- The American Physical Society; American Physical Society; American Physical Society (APS) (ISSN 0031-9007)
- Published
- 2021
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)