24-30 July 2016
Highfield Campus, University of Southampton
Europe/London timezone

Determination of charm quark mass from temporal moments of charmonium correlator with Mobius domain-wall fermion

26 Jul 2016, 15:00
20m
Building 67 Room 1007 (Highfield Campus, University of Southampton)

Building 67 Room 1007

Highfield Campus, University of Southampton

Highfield Campus, Southampton SO17 1BJ, UK
Talk Standard Model Parameters and Renormalization Standard Model Parameters and Renormalization

Speaker

Katsumasa Nakayama (Nagoya University)

Description

We extract the charm quark mass and the strong coupling constant by using the charmonium current correlators with $n_f$ = 2 + 1 Mobius domain wall fermions. The temporal moments of the correlators are sensitive to short-distance physics, and could be also calculated in the continuum theory by perturbative expansion, which is known up to four- loop order.We match our lattice calculation with perturbative result, and extract the charm quark mass with the uncertainty less than 1%. We also confirm the correlators in the vector channel to be consistent with experimental data for R-ratio. We used the ensembles by the JLQCD collaboration at lattice spacings a = 0.083 fm, 0.055 fm and 0.044 fm, are extrapolated to the continuum limit.

Primary author

Katsumasa Nakayama (Nagoya University)

Co-authors

Presentation Materials