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Journal Article

Compton-like scattering of a scalar particle with N photons and one graviton

MPS-Authors

Corradini ,  Olindo
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Schubert,  Christian
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Fulltext (public)

1908.03425.pdf
(Preprint), 530KB

1-s2.0-S0550321319303633-main.pdf
(Publisher version), 422KB

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Citation

Ahmadiniaz, N., Balli, F. M., Corradini, O., Dávila, J. M., & Schubert, C. (2020). Compton-like scattering of a scalar particle with N photons and one graviton. Nuclear physics B, 950: 114877. doi:10.1016/j.nuclphysb.2019.114877.


Cite as: http://hdl.handle.net/21.11116/0000-0004-8B1C-1
Abstract
Tree-level scattering amplitudes for a scalar particle coupled to an arbitrary number N of photons and a single graviton are computed. We employ the worldline formalism as the main tool to compute the irreducible part of the amplitude, where all the photons and the graviton are directly attached to the scalar line, then derive a tree replacement rule to construct the reducible parts of the amplitude which involve irreducible pure N-photon two-scalar amplitudes where one photon line emits the graviton. We test our construction by verifying the on-shell gauge and diffeomorphism Ward identities, at arbitrary N.