Factorization, resummation and sum rules for heavy-to-light form factors

Abstract

Precision calculations of heavy-to-light form factors are essential to sharpen our understanding towards the strong interaction dynamics of the heavy-quark system and to shed light on a coherent solution of flavor anomalies. We briefly review factorization properties of heavy-to-light form factors in the framework of QCD factorization in the heavy quark limit and discuss the recent progress on the QCD calculation of $B\to \pi$ form factors from the light-cone sum rules with the $B$-meson distribution amplitudes. Demonstration of QCD factorization for the vacuum-to-$B$-meson correlation function used in the sum-rule construction and resummation of large logarithms in the short-distance functions entering the factorization theorem are presented in detail. Phenomenological implications of the newly derived sum rules for $B\to \pi$ form factors are further addressed with a particular attention to the extraction of the CKM matrix element $|V_{ub}|$.

arXiv comment6 pages, 3 figures, proceedings prepared for the "QCD@work 2016", (27-30 June 2016, Martina Franca, Italy)

References in corpus (17)

• An effective field theory for collinear and soft gluons: heavy to light decays
• New Results on B->pi, K, eta Decay Formfactors from Light-Cone Sum Rules
• Symmetry-breaking corrections to heavy-to-light B meson form factors at large recoil
• Form Factors from Light-Cone Sum Rules with B-Meson Distribution Amplitudes
• Light-cone sum rules for $B\to \pi$ form factors revisited
• $B\to \pi \ell {\nu }_l$ Width and $|V_{ub}|$ from QCD Light-Cone Sum Rules
• Study of Exclusive B->X_u l nu Decays and Extraction of |V_{ub}| using Full Reconstruction Tagging at the Belle Experiment
• QCD corrections to $B\to \pi$ form factors from light-cone sum rules
• Next-to-leading-order corrections to $B\to \pi$ form factors in $k_T$ factorization
• Branching fraction and form-factor shape measurements of exclusive charmless semileptonic B decays, and determination of |V_{ub}|
• Perturbative Corrections to ${\Lambda }_b\to \Lambda$ Form Factors from QCD Light-Cone Sum Rules
• $B$-Meson Distribution Amplitude from the $B\to \pi$ Form Factor
• Rare Decays of Λ_b->Λ+ γand Λ_b ->Λ+ l^{+} l^{-} in the Light-cone Sum Rules
• Anatomy of the pQCD Approach to the Baryonic Decays ${\Lambda }_b\to p\pi ,pK$
• Light-cone sum rules in soft-collinear effective theory
• SCET sum rules for B->P and B->V transition form factors
• Search for double charmonium decays of the P-wave spin-triplet bottomonium states

Cited by in corpus (1)

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