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Study on the P-wave form factors contributing to B_s to D_s inclusive semileptonic decays from lattice simulations
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Study on the P-wave form factors contributing to B_s to D_s inclusive semileptonic decays from lattice simulations
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We present a pilot study on extracting the form factors of the semileptonic decay of a $ B_s $ meson to the $P$-wave $ D_s^{**} $ states from $B_s$ four-point correlators. With their inclusive nature, four-point correlators include contributions from all possible final states. From the extracted $ P $-wave form factors, we obtain numerical results for the corresponding Isgur-Wise form factors. The results suggest significant contributions from radial excitations to the Uraltsev sum rule at zero-recoil. In this pilot study, a coarse lattice of $ 24^3\times 64 $ with lattice spacing of $0.11\,\mathrm{fm}$ is used for the analysis.
Forward citations
Cited by 2 Pith papers
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Study on the systematic effects on $b \to c$ inclusive semileptonic decays
Lattice QCD study analyzes key systematics in inclusive B_s to X_c l nu decays and isolates excited-state contributions by treating ground states exclusively to reduce uncertainties.
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Inclusive semileptonic $D_s\to X_s\ell\bar\nu$ decays from lattice QCD: continuum and chiral extrapolation
Lattice QCD yields the Ds to Xs l nu inclusive decay rate in agreement with experiment after full chiral and continuum extrapolations, with few-percent total uncertainty.
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