出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Over the next years, the Flavour Physics community will be looking for inconsistencies of the
Standard Model (SM) by exploiting new and precise measurements. In these “indirect new
physics” searches, the key strategy is to concentrate on observables, which are theoretically
clean and preferably suppressed in the SM. In this respect, the four golden modes K+ !p+nn¯ ,
KL !p0nn¯ and KL !p0`+`¡ are very promising.The pollution from hadronic uncertainties in
these decays is at present under control with good accuracy, thanks to the interplay between theory
information (Chiral Perturbation Theory and OPE) and experimental inputs (KTeV, NA48).
Their measurements might thus give rise to some unexpected scenario. Here, we briefly review
the present situation for these four exclusive rare decays.
