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 satisfy all existing constraints and can be used in phenomenological studies.
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Braun, V.M., Ji, Y. & Manashov, A.N. Higher-twist B-meson distribution amplitudes in HQET. J. High Energ. Phys. 2017, 22 (2017). https://doi.org/10.1007/JHEP05(2017)022
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DOI: https://doi.org/10.1007/JHEP05(2017)022