منابع مشابه
Kaon Polarizabilities in Chiral Perturbation Theory
We study the kaon polarizabilities in the framework of Chiral Perturbation Theory to order p4. For the neutral kaon we find that them vanish and they have the first non-zero contribution to order p6. We also emphasize the theoretical potential of an eventual measurement of the kaon polarizabilities, in particular of the neutral kaon ones. PACS numbers: 14.40.Aq, 13.40.Gp, 13.60.Fz, 12.39.Fe
متن کاملSemileptonic Kaon Decays in Chiral Perturbation Theory
We present the matrix elements for the semileptonic kaon decays Kl2γ , Kl2l+l−, Kl2l′+l′−, Kl3, Kl3γ and Kl4 at next-to-leading order in chiral perturbation theory and compare the predictions with experimental data. Monte Carlo event generators are used to calculate the corresponding rates at DAFNE. We discuss the possibilities to improve our knowledge of the low-energy structure of the Standar...
متن کاملChiral Perturbation Theory and Kaon Physics∗
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 ...
متن کاملSemileptonic Kaon Decay in Staggered Chiral Perturbation Theory
Abstract The determination of |Vus| from kaon semileptonic decays requires the value of the form factor f+(q 2 = 0), which can be calculated precisely on the lattice. We provide the one-loop partially quenched staggered chiral perturbation theory expressions that may be employed to analyze staggered simulations of f+(q 2) with three light flavors. We consider both the case of a mixed action, wh...
متن کاملPion and Kaon masses in Staggered Chiral Perturbation Theory
Abstract We show how to compute chiral logarithms that take into account both theO(a2) taste-symmetry breaking of staggered fermions and the fourth-root trick that produces one taste per flavor. The calculation starts from the Lee-Sharpe Lagrangian generalized to multiple flavors. An error in a previous treatment by one of us is explained and corrected. The one loop chiral logarithm corrections...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics E
سال: 2017
ISSN: 0218-3013,1793-6608
DOI: 10.1142/s0218301317500070