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Inclusive semileptonic Ds→Xsℓν¯ decays from lattice QCD: Continuum and chiral extrapolation

Ryan Kellermann*

Alessandro Barone

Ahmed Elgaziari

Shoji Hashimoto and Takashi Kaneko

Zhi Hu

Andreas Jüttner

  • School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom and STAG Research Center, University of Southampton, Southampton SO17 1BJ, United Kingdom

  • CERN, Theoretical Physics Department, Geneva, Switzerland and School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom and STAG Research Center, University of Southampton, Southampton SO17 1BJ, United Kingdom

  • *Contact author: kelry@post.kek.jp
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Phys. Rev. D 114, 034507 – Published 11 August, 2026

DOI: https://doi.org/10.1103/g6gh-t4pc

Abstract

We present results for the inclusive semileptonic Ds→Xsℓν¯ decay rate from lattice QCD. Chiral and continuum extrapolations are performed using gauge ensembles generated with 2+1 flavors of Möbius domain-wall fermions. Systematic errors are fully addressed including those from the integral over all possible final states. Our results are in agreement with currently available experimental data, with an error at the few-percent level.

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Phys. Rev. D 114, 034507– Published 11 August, 2026
  • Received 8 May 2026
  • Accepted 6 July 2026
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