PIRSA:15090017

New Extraction of the Proton Radius from ep-Scattering Data

Lee, G. (2015). New Extraction of the Proton Radius from ep-Scattering Data. Perimeter Institute. https://pirsa.org/15090017

Lee, Gabriel. New Extraction of the Proton Radius from ep-Scattering Data. Perimeter Institute, Sep. 08, 2015, https://pirsa.org/15090017 

          @misc{ pirsa_PIRSA:15090017,
            doi = {10.48660/15090017},
            url = {https://pirsa.org/15090017},
            author = {Lee, Gabriel},
            keywords = {Particle Physics},
            language = {en},
            title = {New Extraction of the Proton Radius from ep-Scattering Data},
            publisher = {Perimeter Institute},
            year = {2015},
            month = {sep},
            note = {PIRSA:15090017 see, \url{https://pirsa.org}}
          }

Gabriel Lee

Technion - Israel Institute of Technology

Talk number
PIRSA:15090017
Collection
Talk Type
Subject
Abstract

A new analysis of electron-proton scattering data (those published in 2010 by the Mainz A1 collaboration and previous world compilations) to determine the proton electric and magnetic radii is presented. The analysis enforces model-independent constraints of form factor analyticity and investigates a wide range of possible systematic effects. Employing standard models for radiative corrections, our improved analysis yields proton electric radii for the Mainz and world data sets that are consistent, although a simple combination yields a value r_E = 0.904(15) fm that is 4-sigma larger than the CREMA muonic hydrogen determination. Remaining possible deficiencies are discussed that, if addressed, could reconcile the values from muonic hydrogen spectroscopy and ep-scattering.