Higher twist distribution amplitudes of vector mesons in QCD: Formalism and twist 3 distributions
نویسندگان
چکیده
منابع مشابه
Higher Twist Distribution Amplitudes of Vector Mesons in QCD: Formalism and Twist Three Distributions
We present a systematic study of twist three light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion and takes into account meson and quark mass corrections. A complete set of distribution amplitudes is constructed for ρ, ω, K and φ mesons, which satisfies all (exact) equations of motion and constraints from conformal expansion. Nonperturbative input pa...
متن کاملHigher Twist Distribution Amplitudes of Vector Mesons in QCD: Twist-4 Distributions and Meson Mass Corrections
We present a systematic study of twist-4 light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion. The structure of meson mass corrections is studied in detail. A complete set of distribution amplitudes is constructed, which satisfies all (exact) equations of motion and constraints from conformal expansion. Nonperturbative input parameters are estimated ...
متن کاملHigher twist light-cone distribution amplitudes of vector mesons in QCD
Amplitudes of hard (light-cone dominated) exclusive processes in QCD are expressed by the factorization formulae, which separate the short-distance dynamics from the longdistance one[1]. For those processes producing a (light) vector meson V (= ρ, ω,K, φ) in the final state, like exclusive semileptonic or radiative B decays (B → V eν, B → V + γ) and the hard electroproduction of vector mesons (...
متن کاملHandbook of Higher Twist Distribution Amplitudes of Vector Mesons in Qcd
The standard approach to distribution amplitudes, which is due to Brodsky and Lepage , considers the hadron’s parton decomposition in the infinite momentum frame. A conceptually different, but mathematically equivalent formalism is the light-cone quantization . Either way, power suppressed contributions to exclusive processes in QCD, which are commonly referred to as higher twist corrections, a...
متن کاملHigher Twist Distribution Amplitudes of VectorMesons in QCD : Twist - 4 Distributions andMeson Mass
We present a systematic study of twist-4 light-cone distribution amplitudes of vector mesons in QCD, which is based on conformal expansion. The structure of meson mass corrections is studied in detail. A complete set of distribution amplitudes is constructed, which satisses all (exact) equations of motion and constraints from conformal expansion. Nonperturbative input parameters are estimated f...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1998
ISSN: 0550-3213
DOI: 10.1016/s0550-3213(98)00356-3