Special Informal High Energy Physics Seminar

Note special time and location.

Speaker: Andreas Kronfeld, FNAL

Title: “Quark Masses”

Date: Tue, 24 Apr 2018, 10:00 am – 11:00 am
Type: Informal Seminar
Location: 3239 BPS Bldg.

I will present a new method to determine quark masses from heavy-light meson masses. The two theoretical foundations of the method are 1) the well-known formula for heavy-light hadron masses in the heavy-quark effective theory, and 2) a new definition of the heavy-quark mass with an elegant treatment of the renormalon problem. Using lattice-QCD data from the Fermilab Lattice and MILC Collaborations, the method yields precision on the charmed and bottom quark masses comparable to the best existing determinations. Using very precise quark-mass ratios, including mc/ms from this analysis, we can obtain the most precise determinations of the up-, down-, and strange-quark masses.