منابع مشابه
Hadronic Matrix Elements for Kaons 1
We review some work done by us calculating matrix elements for Kaons. Emphasis is put on the matrix elements which are relevant to predict nonleptonic Kaon CP violating observables. In particular, we recall our results for the B̂K parameter which governs the K0 − K0 mixing and update our results for εK including estimated all-higher-order CHPT corrections and the new results from recent analytic...
متن کاملLight Hadron Weak Matrix Elements
Weak processes involving light hadrons in general, and kaons in particular, have contributed significantly to our understanding of fundamental interactions over the years. Most recently, the measurement of a non-vanishing Re ǫ/ǫ in K → ππ decays by KTeV [1] and NA48 [2] has provided unambiguous evidence for direct CP violation. In constraining the Standard Model (SM), the physics of kaons is co...
متن کاملLight Hadron Weak Matrix Elements
The kaon bag parameter BK , which is required for constraining the CP violation parameter in the Cabibbo-Kobayashi-Maskawa matrix from experiment, has been successfully calculated with the Kogut-Susskind(KS) quark action, taking advantage of its UA(1) chiral symmetry[1]. A recent systematic calculation of BK with high statistics[2], however, reveals that the systematic uncertainties in the pert...
متن کاملWeak Matrix Elements for Cp Violation *
We present preliminary results of matrix elements of four fermion operators relevant to the determination of ǫ and ǫ ′ /ǫ using staggered fermions.
متن کاملTwisted mass QCD for weak matrix elements
I report on the application of tmQCD techniques to the computation of hadronic matrix elements of four-fermion operators. Emphasis is put on the computation of B K in quenched QCD performed by the ALPHA Collaboration. The extension of tmQCD strategies to the study of neutral B-meson mixing is briefly discussed. Finally, some remarks are made concerning proposals to apply tmQCD to the computatio...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1990
ISSN: 0920-5632
DOI: 10.1016/0920-5632(90)90300-j