• Open Access

Parity-Violating Møller Scattering at Next-to-Next-to-Leading Order: Closed Fermion Loops

Yong Du, Ayres Freitas, Hiren H. Patel, and Michael J. Ramsey-Musolf
Phys. Rev. Lett. 126, 131801 – Published 29 March 2021
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Abstract

A complete, gauge-invariant computation of two-loop virtual corrections involving closed fermion loops to the polarized Møller scattering asymmetry is presented. The set of contributions involving two closed fermion loops and the set involving one closed fermion loop are numerically similar in magnitude to the one-loop bosonic corrections and yield an overall correction of 1.3% relative to the tree level asymmetry. We estimate sizes of the remaining two-loop contributions and discuss implications for the upcoming MOLLER (Measurement of a Lepton-Lepton Electroweak Reaction) experiment.

  • Figure
  • Received 17 January 2020
  • Revised 22 July 2020
  • Accepted 23 February 2021

DOI:https://doi.org/10.1103/PhysRevLett.126.131801

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Electroweak radiative correctionsLepton-lepton interactions
  1. Physical Systems
Electrons
  1. Properties
P-symmetry
Particles & Fields

Authors & Affiliations

Yong Du1,*, Ayres Freitas2,†, Hiren H. Patel3,‡, and Michael J. Ramsey-Musolf4,1,5,§

  • 1Amherst Center for Fundamental Interactions, Physics Department, University of Massachusetts Amherst, Amherst, Massachusetts 01003 USA
  • 2Pittsburgh Particle Physics Astrophysics and Cosmology Center (PITT-PACC), Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
  • 3Department of Physics and Santa Cruz Institute for Particle Physics, University of California, Santa Cruz, California 95064, USA
  • 4Tsung-Dao Lee Institute and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
  • 5Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125 USA

  • *Corresponding author. yongdu@umass.edu
  • †Corresponding author. afreitas@pitt.edu
  • ‡Corresponding author. hpatel6@ucsc.edu
  • §Corresponding author. mjrm@physics.umass.edu

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Issue

Vol. 126, Iss. 13 — 2 April 2021

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