The Proton Radius Puzzle

by Prof. Gil Paz

Wayne State University

at Particles and Fields Seminar

Mon, 18 Mar 2019, 14:00
Sacta-Rashi Building for Physics (54), room 207

Abstract

In 2010 the proton charge radius was extracted for the first time from muonic hydrogen, a bound state of a muon and a proton. The value obtained was five standard deviations away from the regular hydrogen extraction. Taken at face value, this might be an indication of a new force in nature coupling to muons, but not to electrons. It also forces us to reexamine our understanding of the structure of the proton.

In this talk I will describe an ongoing theoretical research effort that seeks to address this "proton radius puzzle". In particular, I will present a reevaluation of the proton structure effects, correcting 40 years of such calculations, and the development of new effective field theoretical tools that seek to directly connect muonic hydrogen and muon-proton scattering.

Created on 11-03-2019 by Citron, Zvi (zhcitron)
Updaded on 11-03-2019 by Citron, Zvi (zhcitron)