Observation of Parity Nonconservation in Møller Scattering

2004103 citationsJournal Articlegreen Open Access

Authors

P.L. Anthony · Menlo School

R. G. Arnold · University of Massachusetts Amherst

C. Arroyo · University of Massachusetts Amherst

K. Baird · Stanford University

K. Bega · California Institute of Technology

J. Biesiada · Princeton University

P. Bosted ·

Abstract

We report a measurement of the parity-violating asymmetry in fixed target electron-electron (Møller) scattering: A(PV)=[-175+/-30(stat)+/-20(syst)] x 10(-9). This first direct observation of parity nonconservation in Møller scattering leads to a measurement of the electron's weak charge at low energy Q(e)(W)=-0.053+/-0.011. This is consistent with the standard model expectation at the current level of precision: sin((2)theta(W)(M(Z))((-)MS)=0.2293+/-0.0024(stat)+/-0.0016(syst)+/-0.0006(theory).

Topics & Keywords

Electron and X-Ray Spectroscopy Techniques Quantum and electron transport phenomena Atomic and Molecular Physics

UN Sustainable Development Goals

Affordable and clean energy

Publication Details

Published in: Physical Review Letters

Volume 92, Issue 18, pp. 181602-181602

DOI: 10.1103/physrevlett.92.181602

Field-Weighted Citation Impact: 7.83