Short- and long-distance contributions to the rare decay K_L-->mu+ mu-

Abstract

The interplay between short- and long-distance contributions to the K_L-->mu+ mu- decay amplitude is analyzed. The long-distance piece is estimated using chiral perturbation theory techniques and large-N_C considerations, leading to a consistent description of the pi^0-->e+ e-, eta-->mu+ mu- and K_L-->mu+ mu- branching ratios.

4 pages, 1 figure, talk given at the Euroconference QCD 98, Montpellier, France, July 1998

References in corpus (4)

• Long-distance contributions to the K_L --> mu+ mu- decay width
• Can we extract short-distance information from B(K_L -> mu^+ mu^-)?
• eta-eta' mixing from U_L(3) x U_R(3) Chiral Perturbation Theory
• Long Distance Contribution to $K_L\to {\ell }^{+}{\ell }^{-}$

Cited by in corpus (2)

• Anatomy of Prominent B and K Decays and Signatures of CP-Violating New Physics in the Electroweak Penguin Sector
• Leptoquarks and Neutrino Masses at the LHC