Kaons in quark model of superconducting type

Low-energy kaon properties are discussed. The main low-energy values characterizing kaons: mass spectrum, leptonic and nonleptonic decay amplitudes, neutral kaon mass differences and parameters of CP-nonconservation are considered. Strong low-energy interactions (SLI) taking account of chiral symmetry spontaneous breaking (CSSB) and unitary symmetry breaking play an important role in description of kaon low-energy properties. To describe SLI of hadrons different approximate methods and models based on QCD are used. A consistent description of hadron SLI is suggested by quark model of superconducting type. Mass kaon spectrum caused by SLI is considered. K→lνe and K→lνeγ decays defined by week interactions with W-boson exchange and SLI are analysed. A theoretical solution of the problem of axial formfactors in K→lνeγ decays is suggested. K→γγ, K→l+l-, K→2π and K→3π decays are considered. In description of these decays high-energy QCD-interaction with the gluon exchange plays an important role. A theoretical explanation for activization of transitions with ΔI=1/2 is suggested. Difference in mass between KL-and KS-mesons and parameters of CP nonconservation are analysed. The obtained results are discussed