Speaker
Description
I discuss generic effects of new physics on the rare decay modes KL → π0νν̄ and K+ → π+νν̄ from the point of view of the neutrino sector. I consider left-handed neutrino couplings; right handed neutrino couplings; neutrino lepton flavour violating (LFV) interactions; and ∆I = 3/2 interactions. The first of these cases has been studied before as it covers many new physics extensions of the standard model; the second one requires the existence of a new light (sterile) right-handed neutrino and its contribution to both branching ratios is always additive to the SM. It is motivated as a possible solution to the so called charged B anomalies. The case of neutrino LFV couplings produces interesting constraints on CLFV modes such as semi-tauonic tau decay.
