The 37th International Symposium on Lattice Field Theory (Lattice 2019)

Strong coupling constant and heavy quark masses in (2+1)-flavor QCD

17 Jun 2019, 14:40

20m

Shimao 3B

Parallel Standard Model Parameters and Renormalization Standard model parameters and renormalization

Speaker

Dr Johannes Heinrich Weber (Michigan State University)

Description

I present a determination of the strong coupling constant and heavy quark masses in (2+1)-flavor QCD using lattice calculations with Highly Improved Staggered Quark (HISQ) action and calculate the moments of the pseudo-scalar quarkonium correlators at several values of the heavy valence quark mass. I determine the strong coupling constant in $\overline{MS}$ scheme at four low energy scales corresponding to $m_c$, $1.5m_c$, $2m_c$ and $3m_c$, with $m_c$ being the charm quark mass. Using the moments and the $\Lambda_{\overline{MS}}$ I determine the heavy quark masses in $\overline{MS}$ scheme. In a complementary calculation I determine the strong coupling constant in (2+1)-flavor QCD using lattice calculations of the static energy.

Presentation materials

lattice2019_weber.pdf