| Article | |
| Report number | arXiv:2211.15623 |
| Title | Inclusive semi-leptonic $B_{(s)}$ mesons decay at the physical $b$ quark mass |
| Author(s) | Barone, Alessandro (Southampton U.) ; Jüttner, Andreas (Southampton U. ; CERN) ; Hashimoto, Shoji (KEK, Tsukuba ; Sokendai, Tsukuba) ; Kaneko, Takashi (KEK, Tsukuba ; Sokendai, Tsukuba ; KMI, Nagoya) ; Kellermann, Ryan (KEK, Tsukuba ; Sokendai, Tsukuba) |
| Publication | 2022-12-22 |
| Imprint | 2022-11-28 |
| Number of pages | 10 |
| Note | 10 pages, 6 figures, Proceedings of the 39th International Symposium on Lattice Field Theory, 8th-13th August 2022, Bonn, Germany |
| In: | PoS LATTICE2022 (2023) pp.403 |
| In: | 39th International Symposium on Lattice Field Theory (Lattice 2022), Bonn, Germany, 8 - 13 Aug 2022, pp.403 |
| DOI | 10.22323/1.430.0403 |
| Subject category | hep-lat ; Particle Physics - Lattice |
| Abstract | We address the non-perturbative calculation of the decay rate of inclusive semi-leptonic $B_{(s)}$ mesons decays from lattice QCD. Precise theoretical Standard Model predictions are key ingredients in searches for new physics. This type of computation may eventually provide new insight into the long-standing tension between the inclusive and exclusive determinations of the CKM matrix elements $|V_{cb}|$ and $|V_{ub}|$. We perform a pilot lattice computation for $B_s \rightarrow X_c \, l \nu_l$ and improve on existing techniques. The valence-quark masses in our simulations are approximately physical for the domain-wall strange and charm quarks as well as for the bottom quark, for which we use a relativistic heavy quark effective action. We report on our progress and discuss future plans towards a first study with fully controlled systematic effects. |
| Copyright/License | publication: © 2022-2024 The author(s) (License: CC-BY-NC-ND-4.0) preprint: (License: CC-BY-NC-ND-4.0) |
Corresponding record in: Inspire
Record creato 2023-01-26, modificato l'ultima volta il 2024-04-06