Light-cone distribution functions forBdecays at subleading order in1/mb

نویسندگان
چکیده

برای دانلود رایگان 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

Light-cone distribution functions for B decays at subleading order in 1Õmb

We construct the higher twist structure functions that describe inclusive b hadron decays in regions of phase space where the hadronic decay products carry high energy but have low invariant mass. We show that, for B meson decays, there are four new nonvanishing matrix elements of nonlocal operators. We show that to subleading twist these decays are parametrized in terms of four functions. We c...

متن کامل

Light - cone distribution functions for B decays at subleading order in 1 / m b

We construct the higher twist structure functions that describe inclusive b hadron decays in regions of phase space where the hadronic decay products carry high energy but have low invariant mass. We show that, for B meson decays, there are four new non-vanishing matrix elements of non-local operators. We show that to subleading twist these decays are parametrized in terms of four functions. We...

متن کامل

Subleading Light - cone distributions functions in the decays Λ b → X s γ and Λ b →

In this paper we investigate the subleading twist corrections to the photon energy spectrum in the decay Λb → Xsγ and to the lepton energy spectrum in Λb → Xulν̄l. As a first step we rederive the matching coefficients of the subleading twist using a much simpler method. Parametrizing the matrix elements for Λb and using reparametrization invariance, we show that the energy spectra close to the e...

متن کامل

Signal at subleading order in lattice HQET ∗ †

We discuss the correlators in lattice HQET that are needed to go beyond the static theory. Based on our implementation in the Schrödinger functional we focus on their signal-to-noise ratios and check that a reasonable statistical precision can be reached in quantities like fB s and MB⋆ −MB.

متن کامل

Light-cone wave functions of mesons

A review of light-cone, covariant and gauge-invariant wave-functions of mesons is presented. They are basic non-perturbative objects needed for hard exclusive processes and for the method of light-cone QCD sum rules. The emphasis is on the vector mesons and a new (model-independent) way of computing the mass corrections of vector-meson wave functions is given. Key-Words: Non-pertrubative QCD, C...

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: Physical Review D

سال: 2003

ISSN: 0556-2821,1089-4918

DOI: 10.1103/physrevd.68.094001