Non-perturbative Heavy Quark Effective Theory: An application to semi-leptonic B-decays
Michele Della Morte (University of Southern Denmark), Jochen Heitger, (University of Muenster), Hubert Simma (NIC, DESY), Rainer Sommer (NIC, DESY)
TL;DR
This paper discusses a lattice approach for non-perturbatively determining coefficients in Heavy Quark Effective Theory and presents preliminary results on form factors relevant to semi-leptonic B-decays.
Contribution
It introduces a lattice strategy to non-perturbatively compute HQET coefficients, including 1/m_h corrections, and provides initial results on decay form factors.
Findings
Method for non-perturbative coefficient determination
Preliminary form factor results for semi-leptonic B-decays
Framework for including 1/m_h corrections
Abstract
We review a lattice strategy how to non-perturbatively determine the coefficients in the HQET expansion of all components of the heavy-light axial and vector currents, including 1/m_h-corrections. We also discuss recent preliminary results on the form factors parameterizing semi-leptonic B-decays at the leading order in 1/m_h.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research