Impact on $L$-observables of a new combined analysis of $B_{d,s}\to K^{(\ast )}$ form factors

Abstract

We explore the impact of a combined analysis of $B_{d,s}\to K^{(\ast )}$ form factors on a set of $L$-observables. The $L$-observables are constructed from ratios of branching fractions in $B_s\to VV,PP,PV$ versus $B_d\to VV,PP,PV$ decays with $P=K^0,{\bar{K}}^0$ and $V=K^{\ast 0},{\bar{K}}^{\ast 0}$, thereby partially reducing their hadronic uncertainties. We show the change of the Standard Model predictions of the $L$-observables under different determinations of the ratio of the relevant form factors (with correlations) including lattice QCD data and a novel light-cone sum rule analysis. In addition, we provide precise results for all $B_{d,s}\to K^{(\ast )}$ form factors in machine-readable files. We find that the inclusion of our up-to-date results, as well as the use or omission of lattice QCD data for the form factors, has a significant impact on the $L$-observables. We also discuss how the New Physics interpretation is affected by the updated form factors and present revised predictions for the mechanism identified in our analysis of $B\to VP$ decays, now employing more suitable new experimental observables defined in this paper.

arXiv comment33 pages, 4 figures

References in corpus (47)

• dynesty: A Dynamic Nested Sampling Package for Estimating Bayesian Posteriors and Evidences
• QCD factorization for B->PP and B->PV decays
• QCD Factorization in B -> pi K, pi pi Decays and Extraction of Wolfenstein Parameters
• $B\to V{\ell }^{+}{\ell }^{-}$ in the Standard Model from Light-Cone Sum Rules
• More Model-Independent Analysis of b->s Processes
• Global analysis of $b\to s\ell \ell$ anomalies
• Patterns of New Physics in $b\to s{\ell }^{+}{\ell }^{-}$ transitions in the light of recent data
• Dynamic nested sampling: an improved algorithm for parameter estimation and evidence calculation
• Optimizing the basis of B->K*ll observables in the full kinematic range
• Branching fractions, polarisation and asymmetries of B -> VV decays
• Precision Corrections to Dispersive Bounds on Form Factors
• Lattice QCD calculation of form factors describing the rare decays $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ and $B_s\to \varphi {\ell }^{+}{\ell }^{-}$
• The B-Meson Distribution Amplitude in QCD
• $B\to P$ and $B\to V$ Form Factors from $B$-Meson Light-Cone Sum Rules beyond Leading Twist
• QCD Sum Rules, a Modern Perspective
• Form Factors from Light-Cone Sum Rules with B-Meson Distribution Amplitudes
• Twist-3 Distribution Amplitudes of K* and phi Mesons
• $B\to \pi \ell \nu$ and $B_s\to K\ell \nu$ form factors and $|V_{ub}|$ from 2+1-flavor lattice QCD with domain-wall light quarks and relativistic heavy quarks
• $B\to K{l}^{+}{l}^{-}$ decay form factors from three-flavor lattice QCD
• B meson distribution amplitude from B --> γl ν
• Light-cone distribution amplitudes of pseudoscalar mesons from lattice QCD
• Theoretical and Phenomenological Constraints on Form Factors for Radiative and Semi-Leptonic B-Meson Decays
• QCD corrections to $B\to \pi$ form factors from light-cone sum rules
• $B_s\to K\ell \nu$ form factors from lattice QCD
• $B$-Meson Distribution Amplitude from the $B\to \pi$ Form Factor
• $B_s\to K\ell {\nu }_{\ell }$ and $B_{(s)}\to \pi (K){\ell }^{+}{\ell }^{-}$ decays at large recoil and CKM matrix elements
• Precision calculations of $B\to V$ form factors in QCD
• Heavy-Quark Expansion for ${\bar{B}}_s\to D_s^{(\ast )}$ Form Factors and Unitarity Bounds beyond the $SU(3{)}_F$ Limit
• Radiative leptonic decay $B\to \gamma \ell {\nu }_{\ell }$ with subleading power corrections
• Model-independent bounds on new physics effects in non-leptonic tree-level decays of B-mesons
• Factorization and dispersion relations for radiative leptonic $B$ decay
• $B_{s,d}\to \pi \pi ,\pi K,KK$: Status and Prospects
• First lattice calculation of radiative leptonic decay rates of pseudoscalar mesons
• Dispersive Analysis of $B\to K^{(\ast )}$ and $B_s\to \varphi$ Form Factors
• EOS -- A Software for Flavor Physics Phenomenology
• Extrapolation and unitarity bounds for the $B\to \pi$ form factor
• Light-Cone Sum Rules for $B\to K\pi$ Form Factors and Applications to Rare Decays
• Flavour SU(3) Symmetry in Charmless B Decays
• Exploring B_{d,s}-> KK decays through flavour symmetries and QCD-factorisation
• Inverse moment of the $B_s$-meson distribution amplitude from QCD sum rule
• A new $B$-flavour anomaly in $B_{d,s}\to K^{\ast 0}{\bar{K}}^{\ast 0}$: anatomy and interpretation
• A new puzzle in non-leptonic B decays
• QCD sum rules for parameters of the $B$-meson distribution amplitudes
• A U-spin Puzzle in $B$ Decays
• Anomalies in Hadronic $B$ Decays
• Unitarity bounds with subthreshold and anomalous cuts for $b$-hadron decays
• Constraining inverse moment of $B$-meson distribution amplitude using Lattice QCD data

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