Semileptonic transitions: B() → π(K); D → K; D → π,K; and K → π

Yao, Zhao-Qian; Binosi, Daniele; Cui, Zhu-Fang; Roberts, Craig D.

doi:10.1016/j.physletb.2021.136793

Cited by 18 publications

(3 citation statements)

References 56 publications

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“…coincide precisely with the emerged patterns predicted by the two independent LCSR computations with the final-state pseudoscalar-meson distribution amplitudes [140,141] (see [142] for the alternative estimates with the TMD factorization approach and [143] for the quantitative analysis in the framework of Dyson-Schwinger equations).…”

Section: Jhep03(2023)140supporting

confidence: 77%

Precision calculations of Bd,s → π, K decay form factors in soft-collinear effective theory

Cui

Huang

Shen

et al. 2023

J. High Energ. Phys.

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We improve QCD calculations of the semileptonic Bd,s→ π, K decay form factors at large hadronic recoil by implementing the next-to-leading-logarithmic resummation for the obtained leading-power light-cone sum rules in the soft-collinear effective theory (SCET) framework and by computing for the first time the non-vanishing spectator-quark mass correction dictating the SU(3)-flavour symmetry breaking effects between these fundamental quantities at the one-loop accuracy. Additionally, we endeavour to investigate a variety of the subleading-power contributions to these heavy-to-light form factors at $$ \mathcal{O}\left({\alpha}_s^0\right) $$ O α s 0 with the same methodology, by including the higher-order terms in the heavy-quark expansion of the hard-collinear quark propagator, by evaluating the desired effective matrix element of the next-to-leading-order term "Image missing" in the SCETI representation of the weak transition current, by taking into account the off-light-cone contributions of the two-body heavy-quark effective theory (HQET) matrix elements as well as the three-particle higher-twist corrections from the subleading bottom-meson light-cone distribution amplitudes (LCDAs), and by computing the twist-five and twist-six four-body higher-twist effects with the aid of the factorization approximation. Having at our disposal the SCET sum rules for the exclusive B-meson decay form factors under discussion, we further explore in detail numerical implications of the newly computed subleading-power corrections by employing the three-parameter model for both the leading-twist and higher-twist B-meson distribution amplitudes. Taking advantage of the customary Bourrely-Caprini-Lellouch (BCL) parametrization for the complete set of the semileptonic Bd,s→ π, K form factors, we then determine the correlated numerical results for the interesting series coefficients, by carrying out the simultaneous fit of the exclusive B-meson decay form factors to both the achieved SCET sum rule predictions at small momentum transfer (q2) and the available lattice QCD results at large momentum transfer. Subsequently, we perform a comprehensive phenomenological analysis of the full angular observables, the lepton-flavour university ratios and the lepton polarization asymmetries for the flavour-changing charged- current $$ B\to \pi \ell {\overline{\nu}}_{\ell } $$ B → π ℓ ν ¯ ℓ and $$ {B}_s\to K\ell {\overline{\nu}}_{\ell } $$ B s → K ℓ ν ¯ ℓ decays (with ℓ = μ, τ) together with the differential q2-distribution for the exclusive rare $$ B\to K{\nu}_{\ell }{\overline{\nu}}_{\ell } $$ B → K ν ℓ ν ¯ ℓ decays in the Standard Model.

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Section: Jhep03(2023)140supporting

confidence: 77%

Precision calculations of Bd,s → π, K decay form factors in soft-collinear effective theory

Cui

Huang

Shen

et al. 2023

J. High Energ. Phys.

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“…[78,79]; overcoming the challenge of large mass imbalances between valence degrees-of-freedom in delivering predictions for the semileptonic decays of heavy+light mesons, e.g., Ref. [80]; the analysis of light-nuclei deep inelastic scattering data [81] and its interpretation in terms of parton distribution functions [14]; the identification of resonance poles in particle decays [17]; and the identification of crossing odd states (the odderon) in the t-channel of high-energy elastic hadron+hadron scattering [82].…”

Section: Discussionmentioning

confidence: 99%

Data-driven extraction of hadron radii

Binosi

2023

Preprint

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We describe the statistical Schlessinger Point Method. Grounded in analytic function theory, this method returns an objective assessment of the information contained in any data under consideration, which is independent of assumptions about underlying dynamics, and thus free from practitioner-induced bias. As a test to its robust nature and versatility, we apply it to a fully data-driven extraction of the proton, pion, and deuteron radii.

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“…[35,94,96]; continuation from Euclidean to Minkowski space in order to obtain light-front specific quantities from Poincaré-covariant wave functions, e.g., Refs. [130,131]; overcoming the challenge of large mass imbalances between valence degrees-of-freedom in delivering predictions for the semileptonic decays of heavy+light mesons, e.g., Ref. [132]; and the analysis of light-nuclei deep inelastic scattering data [133] and its interpretation in terms of parton distribution functions [134].…”

Section: Discussionmentioning

confidence: 99%

Hadron and light nucleus radii from electron scattering*

et al. 2022

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Conceptually, radii are amongst the simplest Poincar'e-invariant properties that can be associated with hadrons and light nuclei. Accurate values of these quantities are necessary so that one may judge the character of putative solutions to the strong interaction problem within the Standard Model. However, limiting their ability to serve in this role, recent measurements and new analyses of older data have revealed uncertainties and imprecisions in the radii of the proton, pion, kaon, and deuteron. In the context of radius measurement using electron+hadron elastic scattering, the past decade has shown that reliable extraction requires minimisation of bias associated with practitioner-dependent choices of data fitting functions. Different answers to that challenge have been offered; and this perspective describes the statistical Schlessinger point method (SPM), in unifying applications to proton, pion, kaon, and deuteron radii. Grounded in analytic function theory, independent of assumptions about underlying dynamics, free from practitioner-induced bias, and applicable in the same form to diverse systems and observables, the SPM returns an objective expression of the information contained in any data under consideration. Its robust nature and versatility make it suitable for use in many branches of experiment and theory.Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

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Semileptonic transitions: B() → π(K); D → K; D → π,K; and K → π

Cited by 18 publications

References 56 publications

Precision calculations of Bd,s → π, K decay form factors in soft-collinear effective theory

Precision calculations of Bd,s → π, K decay form factors in soft-collinear effective theory

Data-driven extraction of hadron radii

Hadron and light nucleus radii from electron scattering*

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Semileptonic transitions: B() → π(K); D → K; D → π,K; and K → π

Cited by 18 publications

References 56 publications

Precision calculations of Bd,s → π, K decay form factors in soft-collinear effective theory

Precision calculations of Bd,s → π, K decay form factors in soft-collinear effective theory

Data-driven extraction of hadron radii

Hadron and light nucleus radii from electron scattering*

Contact Info

Product

Resources

About

Semileptonic transitions: B() → π(K); D → K; D → π,K; and K → π