Regge pole description of scattering of gravitational waves by a Schwarzschild black hole

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We revisit the problem of plane monochromatic gravitational waves impinging upon a Schwarzschild black hole using complex angular momentum techniques.

• By extending our previous study concerning scalar and electromagnetic waves [A.
• Folacci and M.
• Ould El Hadj, Phys.\, Rev.\, D {\bf 99}, 104079, (2019), arXiv:1901.03965], we provide complex angular momentum representations and Regge pole approximations of the helicity-preserving and helicity-reversing scattering amplitudes and of the total differential scattering cross section.