The QED nonfactorizable correction to the semileptonic charmed three-body B decays
Abstract In this paper, the nonfactorizable photonic corrections to the effective four-fermion vertex for the $$\overline{B}$$ B ¯ $${\rightarrow }$$ → $$D^{({*})}$$ D ( ∗ ) $$+$$ + $${\ell }^{-}$$ ℓ - $$+$$ + $$\bar{\nu }_{\ell }$$ ν ¯ ℓ decays are considered at the quark level within SM, where $${...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2024-12-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-13647-z |
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| Summary: | Abstract In this paper, the nonfactorizable photonic corrections to the effective four-fermion vertex for the $$\overline{B}$$ B ¯ $${\rightarrow }$$ → $$D^{({*})}$$ D ( ∗ ) $$+$$ + $${\ell }^{-}$$ ℓ - $$+$$ + $$\bar{\nu }_{\ell }$$ ν ¯ ℓ decays are considered at the quark level within SM, where $${\ell }$$ ℓ $$=$$ = e, $${\mu }$$ μ and $${\tau }$$ τ . It is found that the QED corrections are closely related with the mass of the charged lepton. The QED contributions will enhance branching ratios, which results in the slight reduction of ratios $$R(D^{(*)})$$ R ( D ( ∗ ) ) and the relationship $$R(D^{(*)})_{e}$$ R ( D ( ∗ ) ) e < $$R(D^{(*)})_{\mu }$$ R ( D ( ∗ ) ) μ . |
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| ISSN: | 1434-6052 |