Structure-dependent QED effects in exclusive B-meson decays

Böer, Philipp; Feldmann, Thorsten

doi:10.1140/epjs/s11734-024-01091-9

Eur. Phys. J. Spec. Top.

2024

DOI: 10.1140/epjs/s11734-024-01091-9

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Structure-dependent QED effects in exclusive B-meson decays

Philipp Böer,

Thorsten Feldmann

Abstract: We review recent progress in the computation of structure-dependent QED corrections to exclusive B decays in the factorization approach.

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Cited by 2 publications

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Structure-dependent QED in $$ {B}^{-}\to {\ell}^{-}\overline{\nu}\left(\gamma \right) $$

Rowe,

Zwicky

2024

J. High Energ. Phys.

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Based on explicitly gauge invariant interpolating operators we compute complete next-leading order QED-corrections for leptonic decays. These are sizeable since the helicity-suppression in V-A interactions allows for structure-dependent collinear logs. We have explicitly checked that these logs are absent for helicity-unsuppressed Yukawa-type transitions. Based on B → γ form factors we present the rates for $$ {B}^{-}\to \left({\mu}^{-},{\tau}^{-}\right)\overline{\nu}\left(\gamma \right) $$ B − → μ − τ − ν ¯ γ in differential and integrated form as a function of the photon energy cut-off $$ {E}_{\gamma}^{\textrm{cut}} $$ E γ cut . The effect of the virtual structure-dependent corrections are approximately +5% and +3% for the μ- and τ-channel respectively. The structure dependence of the real radiation exceeds that of the virtual one for $$ {\left.{E}_{\gamma}^{\textrm{cut}}\right|}_{\mu } $$ E γ cut μ > 0.18(3) GeV and is subdominant for the tau channel even when fully inclusive.

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Structure-dependent QED in $$ {B}^{-}\to {\ell}^{-}\overline{\nu}\left(\gamma \right) $$

Rowe,

Zwicky

2024

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

b-Quark physics as a precision laboratory: a collection of articles on the present status and future prospects

Mandal,

Ananthanarayan,

Wyler

2024

Eur. Phys. J. Spec. Top.

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Structure-dependent QED effects in exclusive B-meson decays

Abstract: We review recent progress in the computation of structure-dependent QED corrections to exclusive B decays in the factorization approach.

Cited by 2 publications

References 69 publications

Structure-dependent QED in $$ {B}^{-}\to {\ell}^{-}\overline{\nu}\left(\gamma \right) $$

Structure-dependent QED in $$ {B}^{-}\to {\ell}^{-}\overline{\nu}\left(\gamma \right) $$

b-Quark physics as a precision laboratory: a collection of articles on the present status and future prospects

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