Ju n 20 06 About radiative kaon decay
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ar X iv : h ep - p h / 06 11 36 6 v 1 2 9 N ov 2 00 6 Aspects of radiative K + e 3 decays
We re-investigate the radiative charged kaon decay K → πeνeγ [K ± e3γ ] in chiral perturbation theory, merging the chiral expansion with Low’s theorem. We thoroughly analyze the precision of the predicted branching ratio relative to the non-radiative decay channel. Structure dependent terms and their impact on differential decay distributions are investigated in detail, and the possibility to s...
متن کامل99 06 40 3 v 2 2 5 Ju n 19 99 June , 1999 The ∆ I = 1 / 2 Rule in Kaon Decays : A New Look
The K → ππ decay amplitudes are studied within the framework of generalized factorization in which the effective Wilson coefficients are gauge-invariant, renormalization-scale and -scheme independent while factorization is applied to the tree-level hadronic matrix elements. Nonfactorized contributions to the hadronic matrix elements of (V − A)(V − A) four-quark operators, which are needed to ac...
متن کامل/ 99 06 40 3 v 1 1 7 Ju n 19 99 June , 1999 The ∆ I = 1 / 2 Rule in Kaon Decays : A New Look
The K → ππ decay amplitudes are studied within the framework of generalized factorization in which the effective Wilson coefficients are gauge-invariant, renormalization-scale and -scheme independent while factorization is applied to the tree-level hadronic matrix elements. Nonfactorized contributions to the hadronic matrix elements of (V − A)(V − A) four-quark operators, which are needed to ac...
متن کاملar X iv : h ep - p h / 96 06 34 3 v 1 1 6 Ju n 19 96 TECHNION - PH - 96 - 8 Weak Radiative Decays of Beauty Baryons Paul
Weak radiative decays of beauty baryons into strange baryons, induced by the elec-troweak penguin, are estimated by using a quark model approach. Relations between formfactors in the semileptonic and in the weak radiative decays are derived within the heavy quark effective theory. The partial decay widths are found to be of the order of 10 −15 MeV for Λ b → Λγ and Ξ b → Ξγ and of the oder of 10...
متن کاملKaon Radiative Decay K± → μνγ at CKM at the Fermilab Main Injector
High statistics data for the K → μνγ decay can allow the precision determination of the kaon structure dependent form factors. This study is possible at the proposed FNAL CKM experiment. CKM (Charged Kaons at the Main injector) is a decay-in-flight spectrometer with two Ring Imaging detectors(RICH), and designed to run at the main injector with a high kaon flux. The radiative decay data might b...
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تاریخ انتشار 2006