B →P and B →V form factors from B-meson light-cone sum rules beyond leading twist
Creators
- 1. Technische Universität München, Physik Department (Germany)
Description
We provide results for the full set of form factors describing semileptonic B-meson transitions to pseudoscalar mesons π, K, and vector mesons ρ, K∗, . Our results are obtained within the framework of QCD Light-Cone Sum Rules with B-meson distribution amplitudes. We recalculate and confirm the results for the leading-twist two-particle contributions in the literature. Furthermore, we calculate and provide new expressions for the two-particle contributions up to twist four. Following new developments for the three-particle distribution amplitudes, we calculate and provide new results for the complete set of three-particle contributions up to twist four. The form factors are computed numerically at several phase space points using up-to-date input parameters, including correlations across phase space points and form factors. We use a model ansatz for all contributing B-meson distribution amplitudes that is self-consistent up to twist-four accuracy. We find that the higher-twist two-particle contributions have a substantial impact on the results, and dominate over the three-particle contributions. Our numerical results, including correlations, are provided as machine-readable files in the supplementary material. We discuss the qualitative phenomenological impact of our results on the present b anomalies.
Additional details
Identifiers
Publishing Information
- Journal Title
- Journal of High Energy Physics (Online)
- Journal Volume
- 2019
- Journal Issue
- 1
- Journal Page Range
- p. 1-45
- ISSN
- 1029-8479
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 54067918
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- B MESONS; FORM FACTORS; PHASE SPACE; QUANTUM CHROMODYNAMICS; SUM RULES; VECTOR MESONS
- Descriptors DEC
- BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; EQUATIONS; FIELD THEORIES; HADRONS; MATHEMATICAL SPACE; MESONS; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; SPACE
Optional Information
- Copyright
- Copyright (c) 2019 The Author(s)