SciPost Submission Page
Towards the computation of inclusive decay rates using lattice QCD
by Paolo Gambino, Shoji Hashimoto, Sandro Mächler, Marco Panero, Francesco Sanfilippo, Silvano Simula, Antonio Smecca, Nazario Tantalo
This Submission thread is now published as
Submission summary
| Authors (as registered SciPost users): | Antonio Smecca |
| Submission information | |
|---|---|
| Preprint Link: | https://arxiv.org/abs/2209.15494v1 (pdf) |
| Date accepted: | 2023-07-04 |
| Date submitted: | 2022-10-03 14:17 |
| Submitted by: | Smecca, Antonio |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 51st International Symposium on Multiparticle Dynamics (ISMD2022) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
|
| Approaches: | Theoretical, Computational, Phenomenological |
Abstract
We present a non-perturbative computation of inclusive rates of semileptonic decays of heavy mesons from lattice QCD simulations. The calculation is based on the extraction of smeared spectral functions obtained from four-point Euclidean correlation functions computed on configuration ensembles of the JLQCD and ETM collaborations. We compare our results for the inclusive decay rates with analytical predictions from the operator-product expansion, finding a good agreement for the calculation of the inclusive decay rate. This opens the path to the theoretical determination of the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element $V_{cb}$ to a level of precision competitive with the present experimental uncertainty.
Published as SciPost Phys. Proc. 15, 004 (2024)
Reports on this Submission
Strengths
This contribution to the ISMD2022 conference proceedings clearly and succinctly summarizes published work by the authors.
Report
This is a very nice write-up of a clear talk. I recommend its publication in the conference proceedings.