Higher-twist B-meson Distribution Amplitudes in HQET

Abstract

We present a systematic study of higher-twist distribution amplitudes (DAs) of the B-meson which give rise to power-suppressed $1/m_B$ contributions to B-decays in final states with energetic light particles in the framework of QCD factorization. As the main result, we find that the renormalization group equations for the three-particle distributions are completely integrable in the large $N_c$ limit and can be solved exactly. General properties of the solutions are studied. We propose simple models for higher-twist DAs which satify all existing constraints and can be used in phenomenological studies.

42 pages, 4 figures

References in corpus (4)

• Form Factors from Light-Cone Sum Rules with B-Meson Distribution Amplitudes
• Baryon Operators of Higher Twist in QCD and Nucleon Distribution Amplitudes
• SCET sum rules for B->P and B->V transition form factors
• Renormalization of twist-four operators in light-cone gauge

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