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On multi-step BCFW recursion relations
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DOI：10.1007/JHEP07(2015)058.png)
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In this paper, we extensively investigate the new algorithm known as the multistep BCFW recursion relations. Many interesting mathematical properties are found and understanding these aspects, one can find a systematic way to complete the calculation of amplitude after finite, definite steps and get the correct answer, without recourse to any specific knowledge from field theories, besides mass dimension and helicities. This process consists of the pole concentration and inconsistency elimination. Terms that survive inconsistency elimination cannot be determined by the new algorithm. They include polynomials and their generalizations, which turn out to be useful objects to be explored. Afterwards, we apply it to the Standard Model plus gravity to illustrate its power and limitation. Ensuring its workability, we also tentatively discuss how to improve its efficiency by reducing the steps.
Keyword:
Scattering Amplitudes
Gauge Symmetry
期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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