منابع مشابه
Light 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 کاملHeavy Light Weak Matrix Elements * Shep–96–21
In this review I will focus on calculations of selected matrix elements involving b quarks. The semileptonic decays B̄→πlν̄l and B̄→ρlν̄l depend on the CKM element Vub which fixes one side of the unitarity triangle. Lattice calculations open the possibility for a model independent extraction of this quantity. The rare radiative decay B̄→K∗γ is important for the determination of Vts and as a window o...
متن کاملMatrix Elements of Light Quarks
In this talk a review of theoretical and numerical results for matrix elements of light quark operators is presented. The review is focused on the definition, renormalization and improvement of operators relevant to different processes and on the evaluation of the corresponding physical amplitudes. At this Conference the main topics covered in the parallel sessions were electromagnetic and weak...
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We present preliminary results of matrix elements of four fermion operators relevant to the determination of ǫ and ǫ ′ /ǫ using staggered fermions.
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2001
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(01)00968-9