Towards a lattice determination of the form factors of the rare Hyperon decay ${\Sigma }^{+}\to p{\ell }^{+}{\ell }^{-}$

Felix Erben, Vera Gülpers, Raoul Hodgson +1

The rare Hyperon decay ${\Sigma }^{+}\to p{\ell }^{+}{\ell }^{-}$ is an $s\to d$ flavour changing neutral current, and is therefore suppressed in within the Standard Model, making it an excellent…