$K π$ scattering as a step towards $B to K^* ell^+ ell^-$ from Lattice QCD
Felix Erben, Matthew Black, Peter Boyle, Matteo Di Carlo, Vera Gülpers, Maxwell T. Hansen, Nelson Pitanga Lachini, Rajnandini Mukherjee, Antonin Portelli, J. Tobias Tsang
March, 2026