منابع مشابه
The Weak Ope and Dimension - Eight Operators
We discuss recent work which identifies a potential flaw in standard treatments of weak decay amplitudes , including that of ǫ ′ /ǫ. The point is that (contrary to conventional wisdom) dimension-eight operators contribute to weak amplitudes at order G F αs and without 1/M 2 W suppression. The effect of dimension-eight operators is estimated to be at the 100% level in a sum rule determination of...
متن کاملReshuffling the OPE: Delocalized Operator Expansion
A prescription for the short-distance expansion of Euclidean current correlators based on a delocalized modification of the multipole expansion of perturbative short-distance coefficient functions is proposed that appreciates the presence of nonlocal physics in the nonperturbative QCD vacuum. This expansion converges better than the local Wilson OPE, which is recovered in the limit of infinite ...
متن کاملMatching Regge Theory to the OPE
The spectra of masses and decay constants for non-strange meson resonances in the energy range 0–2.5 GeV is analyzed. It is known from meson phenomenology that for given quantum numbers these spectra approximately follow linear trajectories with a universal slope. These facts can be understood in terms of an effective string description for QCD. For light meson states the trajectories deviate n...
متن کاملDimension-eight operators in the weak OPE
We argue that there is a potential flaw in the standard treatment of weak decay amplitudes, including that of ′/ . We show that (contrary to conventional wisdom) dimension-eight operators do contribute to weak amplitudes, at order GF αs and without 1/M2 W suppression. We demonstrate the existence of these operators through the use of a simple weak hamiltonian. Their contribution appears in diff...
متن کاملTangencies between holomorphic maps and holomorphic laminations
We prove that the set of leaves of a holomorphic lamination of codimension one that are tangent to a germ of a holomorphic map is discrete. Let F be a holomorphic lamination of codimension one in an open set V in a complex Banach space B. In this paper, this means that V = W × C, where W is a neighborhood of the origin in some Banach space, and the leaves Lλ of the lamination are disjoint graph...
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: Journal of High Energy Physics
سال: 2017
ISSN: 1029-8479
DOI: 10.1007/jhep11(2017)006