Rare Kaon Decays K->pi n n and KL->pi l+l-

Details Rare Kaon Decays K->pi n n and KL->pi l+l- Rare Kaon Decays K->pi n n and KL->pi l+l-

2005-12-12

arxiv.org/abs/hep-ph/0512142v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at EPS International Europhysics Conference on High Energy Physics (HEPP-EPS 2005), Lisbon, Portugal, 21-27 Jul 200

Scientific paper

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+->pi+ n n, KL->pi n n and KL->pi0 l+l- 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.

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