TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.15.004
TI  - Towards the computation of inclusive decay rates using lattice QCD
PY  - 2024/04/02
UR  - https://scipost.org/SciPostPhysProc.15.004
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 15
SP  - 004
A1  - Gambino, Paolo
AU  - Hashimoto, Shoji
AU  - Mächler, Sandro
AU  - Panero, Marco
AU  - Sanfilippo, Francesco
AU  - Simula, Silvano
AU  - Smecca, Antonio
AU  - Tantalo, Nazario
AB  - 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.
ER  -

@Article{10.21468/SciPostPhysProc.15.004,
	title={{Towards the computation of inclusive decay rates using lattice QCD}},
	author={Paolo Gambino and Shoji Hashimoto and Sandro Mächler and Marco Panero and Francesco Sanfilippo and Silvano Simula and Antonio Smecca and Nazario Tantalo},
	journal={SciPost Phys. Proc.},
	pages={004},
	year={2024},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.15.004},
	url={https://scipost.org/10.21468/SciPostPhysProc.15.004},
}