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22-28 July 2018
Kellogg Hotel and Conference Center
EST timezone

$\mathcal{O}(a)$ improved quark mass renormalization for a non-perturbative matching of HQET to three-flavor QCD

Jul 26, 2018, 10:10 AM
20m
104 (Kellogg Hotel and Conference Center)

104

Kellogg Hotel and Conference Center

219 S Harrison Rd, East Lansing, MI 48824
Standard Model Parameters and Renormalization Standard Model Parameters and Renormalization

Speaker

Simon Kuberski (Institut für Theoretische Physik, Universität Münster)

Description

The use of Heavy Quark Effective Theory (HQET) on the lattice as an approach to B-physics phenomenology is based on a non-perturbative matching of HQET to QCD in finite volume. As a first step to apply the underlying strategy in the three-flavor ($N_f = 2+1$) theory, we determine the renormalization constant and improvement coefficients relating the renormalized current and subtracted quark mass of (quenched) valence quarks in $\mathcal{O}(a)$ improved $N_f=3$ lattice QCD. We present our strategy and first results for the relevant parameter region towards weak couplings along a line of constant physics, which corresponds to lattice resolutions $a\leq 0.02\,$fm and fixes the physical extent of the matching volume to $L\approx 0.5\,$fm.

Primary authors

Dr Jochen Heitger (Institut für Theoretische Physik, Universität Münster) Dr Patrick Fritzsch (Theoretical Physics Department, CERN) Simon Kuberski (Institut für Theoretische Physik, Universität Münster)

Presentation Materials