Relations for Einstein–Yang–Mills amplitudes from the CHY representation
2017; Elsevier BV; Volume: 767; Linguagem: Inglês
10.1016/j.physletb.2017.01.036
ISSN1873-2445
AutoresLeonardo de la Cruz, Alexander Kniss, Stefan Weinzierl,
Tópico(s)Particle physics theoretical and experimental studies
ResumoWe show that a recently discovered relation, which expresses tree-level single trace Einstein-Yang-Mills amplitudes with one graviton and $(n-1)$ gauge bosons as a linear combination of pure Yang-Mills tree amplitudes with $n$ gauge bosons, can be derived from the CHY representation. In addition we show that there is a generalisation, which expresses tree-level single trace Einstein-Yang-Mills amplitudes with $r$ gravitons and $(n-r)$ gauge bosons as a linear combination of pure Yang-Mills tree amplitudes with $n$ gauge bosons. We present a general formula for this case.
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