Model-independent extraction of |V| from B¯→D⁎ℓν‾

2017/03/31 by Benjamı́n Grinstein, Benjamin Grinstein, Andrew Kobach · 106 citations
Physics and Astronomy · #Algorithm #Bar (unit) #Black Holes and Theoretical Physics #Computer science #Machine learning #Particle physics #Particle physics theoretical and experimental studies #Philosophy #Physics #Quantum Chromodynamics and Particle Interactions #Value (mathematics) #Zero (linguistics) #hep-ph

paper · pdf · open access · doi:10.1016/j.physletb.2017.05.078

published in Physics Letters B 771, 359-364 (Elsevier BV) · 8 pages, 3 figures; corrected minor typographical errors

openalex created_date 2017/04/07 · openalex publication_date 2017/06/01 · arxiv created 2017/06/07 · arxiv updated 2017/06/09 · openalex updated_date 2026/08/06

Abstract

We fit the unfolded data of ⁎ B ¯ 0 → D ⁎ + ℓ ν ‾ from the Belle experiment, where ℓ ≡ e , μ , using a method independent of heavy quark symmetry to extrapolate to zero-recoil and extract the value of | V c b | . This results in | V c b | = ( 41.9 − 1.9 + 2.0 ) × 10 − 3 , which is robust to changes in the theoretical inputs and very consistent with the value extracted from inclusive semileptonic B decays.

Citations

• Improved bounds for the slope and curvature of form factors
• Update of|Vcb|from theB¯→D*ℓν¯form factor at zero recoil with three-flavor lattice QCD
• Model-independent extraction of |Vcb| using dispersion relations
• Constraints on Form Factors for Exclusive Semileptonic Heavy to Light Meson Decays
• Global analysis of inclusiveBdecays

Cited by

• Measurement of the CKM matrix element |Vcb| from B0→D*−ℓ+νℓ at Belle
• Measurements of partial branching fractions of inclusive B→Xuℓ+νℓ decays with hadronic tagging