Neutrino magnetic and electric dipole moments: From measurements to parameter space

Searches for neutrino magnetic moments/transitions in low energy scattering experiments are sensitive to effective couplings, which an intricate function of the Hamiltonian parameters. We study parameter space dependence these couplings Majorana (transitions) and Dirac (moments) cases, as well impact current most stringent experimental upper limits on fundamental In case we find that reactor, short-baseline, solar neutrinos, $CP$ violation can be understood a measurement vectors misalignments. The presence nonvanishing phases opens blind spot region where---regardless how large parameters are---no signal observed either reactor or short-baseline experiments. Identification regions requires combination different datasets allows determination those phases. point out bounds not necessarily imply suppressed thus allowing where disparate simultaneously satisfied. contrast, translate into tight couplings. terms vectors, provide straightforward mapping information space.