Effective field theory analysis of rare |∆c| = |∆u| = 1 charm decays
together with improved theory modelling and D → π π transition form factors. On the other hand, the 4-body decay is an important contributor to the future global analysis due to its angular distributions [...] the simplicity of a 3-body decay with available form factors from lattice QCD, sensitivity to both 4-fermion and electromagnetic dipole couplings and its null test forward-backward asymmetry. Link to the …
