@article{1decbb8cb3b248b2a623472ddcbe7f0a, title = "MHV scattering of gluons and gravitons in chiral strong fields", abstract = "We present all-multiplicity formulae for the tree-level scattering of gluons and gravitons in the maximal helicity violating (MHV) helicity configuration, calculated in certain chiral strong fields. The strong backgrounds we consider are self-dual plane waves in gauge theory and general relativity, which are treated exactly and admit a well-defined S-matrix. The gauge theory background-coupled MHV amplitude is simply a dressed analogue of the familiar Parke-Taylor formula, but the gravitational version has non-trivial new structures due to graviton tails. Both formulae have just one residual integral rather than the n−2 expected at n-points from space-time perturbation theory; this simplification arises from the integrability of self-dual backgrounds and their corresponding twistor description. The resulting formulae pass several consistency checks and limit to the well-known expressions for MHV scattering of gluons and gravitons when the background becomes trivial. ", author = "Tim Adamo and Lionel Mason and Atul Sharma", year = "2020", month = jul, day = "24", doi = "10.1103/PhysRevLett.125.041602", language = "English", volume = "125", journal = "Physical Review Letters", issn = "0031-9007", publisher = "American Physical Society", number = "4", }