ar X iv : h ep - l at / 0 20 91 07 v 1 1 1 Se p 20 02 1 Effects of Quenching in ∆ I = 1 / 2 Kaon Decays ∗
نویسندگان
چکیده
We present the inconsistencies which arise in quenched QCD in ∆I = 1/2 non-leptonic kaon decays using chiral perturbation theory (χPT) to one loop. In particular we discuss how the lack of unitarity of the quenched theory invalidates the usual methods for the extraction of matrix elements from correlation functions.
منابع مشابه
ar X iv : h ep - l at / 0 20 91 16 v 1 1 2 Se p 20 02 1 Heavy to light vector meson semileptonic decays ∗ †
New (preliminary) results for the form factors relevant for the semileptonic decays of heavy pseudoscalar to a light vector meson are presented. In particular, we discuss the form factors for D → K * and B → ρ modes.
متن کاملar X iv : h ep - l at / 0 20 91 36 v 1 1 8 Se p 20 02 1 Kaon Weak Matrix
Dip. di Fisica, Università “La Sapienza” and INFN-Roma I, P.le A. Moro 2, I-00185 Rome, Italy Laboratoire de Physique Théorique (bât.210), Université de Paris XI, 91405 Orsay Cedex, France Dep. de F́ıs.Teòrica and IFIC, Univ. de València, Dr. Moliner 50, E-46100, Burjassot, València, Spain Department of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, England Dip. di Fisic...
متن کاملar X iv : h ep - l at / 0 20 91 08 v 1 1 1 Se p 20 02 1 K → ππ Decay Amplitude on the Lattice
Recent theoretical and numerical progresses of the lattice calculations of K → ππ decay amplitude are reviewed.
متن کاملar X iv : h ep - l at / 0 20 91 18 v 1 1 3 Se p 20 02 1 Monopole Condensation in full QCD using the Schrödinger Functional
We use a lattice thermal partition functional to study Abelian monopole condensation in full QCD with N f = 2 staggered fermions. We present preliminary results on 16 3 × 4 and 32 3 × 4 lattices.
متن کاملar X iv : h ep - p h / 02 01 21 8 v 1 2 3 Ja n 20 02 Calculation of ε ′ / ε
I shortly review the present status of the theoretical calculations of ε′/ε and the comparison with the present experimental results. I discuss the role of higher order chiral corrections and in general of non-factorizable contributions for the explanation of the ∆I = 1/2 selection rule and direct CP violation in kaon decays. Still lacking reliable lattice calculations, analytic methods and phe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2002