Polarized lepton-nucleon elastic scattering and a search for a light scalar boson

Yu-Sheng Liu and Gerald A. Miller
Phys. Rev. C 92, 035209 – Published 30 September 2015

Abstract

Lepton-nucleon elastic scattering, using the one-photon and one-scalar-boson exchange mechanisms considering all possible polarizations, is used to study searches for a new scalar boson and suggest new measurements of the nucleon form factors. A new light scalar boson, which feebly couples to leptons and nucleons, may account for the proton radius and muon g2 puzzles. We show that the scalar boson produces relatively large effects in a certain kinematic region when using sufficient control of lepton and nucleon spin polarization. We generalize current techniques to measure the ratio GE:GM and present a new method to separately measure GM2 and GE2 using polarized incoming and outgoing muons.

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  • Received 4 August 2015

DOI:https://doi.org/10.1103/PhysRevC.92.035209

©2015 American Physical Society

Authors & Affiliations

Yu-Sheng Liu* and Gerald A. Miller

  • Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA

  • *ysliu@uw.edu
  • miller@uw.edu

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Issue

Vol. 92, Iss. 3 — September 2015

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