Two-loop hybrid renormalization of local dimension-4 heavy–light operators

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Two-loop hybrid renormalization of local dimension-4 heavy–light operators

The renormalization of local dimension-4 operators containing a heavy and a light quark field at scales below the heavy-quark mass is discussed, using the formalism of the heavy-quark effective theory. The anomalous dimensions of these operators and their mixing are calculated to two-loop order. Some phenomenological applications are briefly discussed. (Submitted to Physics Letters B) CERN-TH/9...

متن کامل

Hybrid Renormalization of Penguins and Dimension-5 Heavy–Light Operators

We discuss the renormalization of local, scalar and pseudoscalar dimension5 operators containing a heavy and a light quark field at scales below the heavy-quark mass, using the formalism of the heavy-quark effective theory (HQET). We calculate the anomalous dimensions of these operators and their mixing to one-loop order. We also perform the one-loop matching of gluon and photon penguin operato...

متن کامل

Two loop divergences studied with one loop Constrained Differential Renormalization

In the context of Differential Renormalization, using Constrained Differential Renormalization rules at one loop, we show how to obtain concrete results in two loop calculations without making use of Ward identities. In order to do that, we obtain a list of integrals with overlapping divergences compatible with CDR that can be applied to various two loop background field calculations. As an exa...

متن کامل

Renormalization constants of local operators within the Schrödinger functional scheme

We define, within the Schrödinger functional (SF) scheme , the matrix elements of the twist-2 operators corresponding to the first two moments of non-singlet parton density, and the first moment of singlet parton densities. We perform a lattice one-loop calculation that fixes the relation between the SF scheme and other common schemes and shows the main source of lattice artefacts. Few remarks ...

متن کامل

Renormalization of 4–Quark Operators and QCD–Sum Rules

We compute the renormalization mismatch displayed in 1–loop approximation by classically equivalent 4-quark operators and coming from different possible definitions of the γ5 matrix in dimensional regularization. The result is then employed to study the effect of the various treatments of γ5 upon the size of radiative corrections to 4-quark condensates in the QCD sum rules for ρ and A1 mesons. ...

متن کامل

ذخیره 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: Physics Letters B

سال: 1998

ISSN: 0370-2693

DOI: 10.1016/s0370-2693(97)01513-x