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Article
Report number arXiv:2211.16830
Title Inclusive semi-leptonic decays of charmed mesons with Möbius domain wall fermions
Author(s) Kellermann, Ryan (KEK, Tsukuba ; Tsukuba, Graduate U. Adv. Studies) ; Barone, Alessandro (Southampton U.) ; Hashimoto, Shoji (KEK, Tsukuba ; Tsukuba, Graduate U. Adv. Studies) ; Jüttner, Andreas (Southampton U. ; U. Southampton (main) ; CERN) ; Kaneko, Takashi (KEK, Tsukuba ; Tsukuba, Graduate U. Adv. Studies ; KMI, Nagoya)
Publication 2023
Imprint 2022-11-30
Number of pages 9
Note 9 pages, 6 figures, Proceedings of the 39th International Symposium on Lattice Field Theory, 8th-13th August 2022, Bonn, Germany
In: PoS LATTICE2022 (2023) pp.414
PoS
In: 39th International Symposium on Lattice Field Theory (Lattice 2022), Bonn, Germany, 8 - 13 Aug 2022, pp.414
DOI 10.22323/1.430.0414
Subject category hep-lat ; Particle Physics - Lattice
Abstract We perform a non-perturbative lattice calculation of the decay rates for inclusive semi-leptonic decays of charmed mesons. In view of the long-standing tension in the determination of the CKM matrix elements $|V_{ub}|$ and $|V_{cb}|$ from exclusive and inclusive processes, recently, the use of lattice QCD has been extended towards the description of inclusive decays. Since the determination of hadronic input parameters from QCD based methods require independent tests, we focus on the charm sector, since it not only offers experimental data, but also well determined CKM parameters. We carry out a pilot lattice simulation for the $D_s \rightarrow X_s \ell\nu$ and explore the improvement of existing techniques. Our simulation employs Möbius domain-wall charm and strange quarks whose masses are tuned to be approximately physical and we cover the whole kinematical region. We report on our progress in analyzing different sources of systematic effects, such as the extrapolation of the kernel function chosen for the Chebsyhev approximation as well as the influence on the analysis in the region close to the kinematical limit.
Copyright/License preprint: (License: CC-BY-NC-ND-4.0)
publication: © 2022-2024 The author(s) (License: CC-BY-NC-ND-4.0)



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 Record created 2023-01-26, last modified 2023-06-13


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