Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Oral presentation
Comparison of lattice QCD results for inclusive semi-leptonic decays B mesons with the OPE
S. Maechler*, P. Gambino and S. Hashimoto
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Pre-published on: May 16, 2022
Published on:
Abstract
A recently proposed approach to compute the inclusive semi-leptonic decay rate on the lattice allows for the calculation of various quantities (differential distributions and moments) in different subchannels. We systematically compare the lattice QCD results for an unphysically light bottom quark with OPE-based predictions, including leading order perturbative and $\mathcal{O}\left(1/m^3 \right)$ power corrections, and explore possible strategies to decrease the systematic uncertainty.
DOI: https://doi.org/10.22323/1.396.0512
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