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Light-cone distribution amplitudes of heavy mesons with QED effects

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arxiv 2204.09091 v1 pith:ALIKZYSE submitted 2022-04-19 hep-ph

Light-cone distribution amplitudes of heavy mesons with QED effects

classification hep-ph
keywords functionssoftamplitudesdecaysdistributionheavyinverselight-cone
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We discuss the QED-generalized leading-twist light-cone distribution amplitudes of heavy mesons, that appear in QCD$\times$QED factorization theorems for exclusive two-body $B$ decays. In the presence of electrically charged particles, these functions should be more appropriately regarded as soft functions for heavy-meson decays into two back-to-back particles. In this paper, we derive the one-loop anomalous dimension of these soft functions and study their behaviour under renormalization-scale evolution, obtaining an exact solution in Laplace space. In addition, we provide numerical solutions for the soft functions and analytical solutions to all orders in the strong and to first order in the electromagnetic coupling. For the inverse (and inverse-logarithmic) moments, we obtain an all-order solution in both couplings. We further provide numerical estimates for QED corrections to the inverse moments.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. The Simplest B Decay, Precisely

    hep-ph 2026-01 conditional novelty 8.0

    A complete QCD×QED, next-to-leading-power factorization now gives a percent-level prediction for B⁻→μ⁻ν̄(γ) with all structure-dependent electromagnetic corrections included.

  2. Three-particle di-light-cone distribution amplitudes of the $B$-meson in heavy-quark effective theory

    hep-ph 2026-06 unverdicted novelty 7.0

    The authors identify eight independent three-particle DLCDAs of the B-meson, perform their complete Lorentz decomposition in definite-twist basis, obtain tree-level relations for integrals and moments from operator id...

  3. $\bar{B}_{s,d}^{0} \to J/\psi \mu^{+}\mu^{-}$ Decays in QCD Factorization

    hep-ph 2025-10 unverdicted novelty 6.0

    Computes branching ratios of order 10^{-10} for Bs and 10^{-11} for Bd decays after NLO vertex corrections in QCD factorization, plus dimuon distributions and J/psi polarization.