New relations for graviton-matter amplitudes
Apr 25, 201813 pages
Published in:
- Phys.Rev.D 98 (2018) 2, 026011
- Published: Jul 10, 2018
e-Print:
- 1804.09651 [hep-th]
Report number:
- HU-EP-18/13,
- HU-EP-18-13,
- CERN-TH-2018-095
Citations per year
Abstract: (APS)
We present new relations for scattering amplitudes of color ordered gluons, massive quarks and scalars minimally coupled to gravity. Tree-level amplitudes of arbitrary matter and gluon multiplicities involving one graviton are reduced to partial amplitudes in QCD or scalar QCD. The obtained relations are a direct generalization of the recently found Einstein-Yang-Mills relations. The proof of the new relation employs a simple diagrammatic argument trading the graviton-matter couplings to an “upgrade” of a gluon coupling with a color-kinematic replacement rule enforced. The use of the Melia-Johansson-Ochirov color basis is a key element of the reduction. We comment on the generalization to multiple gravitons in the single color trace case.Note:
- 12 pages, many figures
- gluon: coupling
- quantum chromodynamics: scalar
- gluon: multiplicity
- coupling: minimal
- quark: massive
- gravitation
- color
- graviton
- Einstein-Yang-Mills theory
- scattering amplitude
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Figures(18)
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