Chiral Perturbation Theory and Kaon Physics∗
نویسنده
چکیده
A brief survey of applications of chiral perturbation theory to both semileptonic and nonleptonic kaon decays is presented. Special emphasis is given to recent theoretical advances related to semileptonic decays, in particular pion pion scattering and Ke4 decays. The systematic approach for including isospin violation and electromagnetic corrections in semileptonic kaon decays is discussed for Kl3 decays. To appear in the Proceedings of KAON 2001, Pisa, Italy, June 12 17, 2001 * Work supported in part by TMR, EC-Contract No. ERBFMRX-CT980169 (EURODAΦNE). Table 1: From the Fermi scale to MK . MW SU(3)× SU(2)× U(1) quarks, gluons, leptons SM gauge bosons, Higgs OPE ⇓ perturbative mc Lf QCD ,L∆S=1 eff , . . . light quarks, gluons leptons, photon symmetries ⇓ nonperturbative MK LSM eff hadrons (Table 2) leptons, photon
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تاریخ انتشار 2001