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Selected Works of Robert W. Pattie Jr.
Article
First Direct Constraints on Fierz Interference in Free-Neutron β Decay
Physical Review C (2017)
  • Kevin P. Hickerson, California Institute of Technology
  • Xiaohui Sun, California Institute of Technology
  • Yelena Bagdasarova, Los Alamos National Laboratory
  • David Bravo-Berguño, Virginia Tech
  • Leah J. Broussard, Oak Ridge National Laboratory
  • Peter Brown, University of Kentucky
  • Richard Carr, California Institute of Technology
  • Scott Currie, Los Alamos National Laboratory
  • Xinjian Ding, Virginia Tech
  • Bradley W. Filippone, California Institute of Technology
  • Alejandro García, University of Washington
  • Peter Geltenbort, Institut Laue-Langevin, France
  • J. Todd Hoagland, North Carolina State University
  • A. T. Holley, Tennessee Tech University
  • Ran Hong, University of Washington
  • Takeyasu M. Ito, Los Alamos National Laboratory
  • Andreas Knecht, Paul Scherrer Institute, Switzerland
  • Chao-Yu Liu, Indiana University - Bloomington
  • Jiang-Lai Liu, California Institute of Technology
  • Mark Makela, Los Alamos National Laboratory
  • Russell R. Mammei, Virginia Tech
  • J. W. Martin, University of Winnipeg, Canada
  • Dan Melconian, Texas A&M University
  • Michael P. Mendenhall, Lawrence Livermore National Laboratory
  • Spencer D. Moore, North Carolina State University
  • Christopher L. Morris, Los Alamos National Laboratory
  • Robert W. Pattie, Los Alamos National Laboratory
  • A. Pérez Galván, Vertex Pharmaceuticals
  • Ruediger Picker, TRIUMF Laboratory, Canada
  • Margaret L. Pitt, Virginia Tech
  • Bradley R. Plaster, University of Kentucky
  • John C. Ramsey, Los Alamos National Laboratory
  • Roger H. Rios, Los Alamos National Laboratory
  • A. Saunders, Los Alamos National Laboratory
  • Susan J. Seestrom, Los Alamos National Laboratory
  • Eduard I. Sharapov, Dubna, JINR
  • Walter E. Sondheim, Los Alamos National Laboratory
  • Erdinch Tatar, Idaho State University
  • R. Bruce Vogelaar, Virginia Tech
  • Brittney VornDick, North Carolina State University
  • Christopher Wrede, Tennessee Technological University
  • Andrew R. Young, North Carolina State University
  • B. A. Zeck, Los Alamos National Laboratory
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Abstract
Precision measurements of free-neutron β decay have been used to precisely constrain our understanding of the weak interaction. However, the neutron Fierz interference term bn, which is particularly sensitive to beyond-standard-model tensor currents at the TeV scale, has thus far eluded measurement. Here we report the first direct constraints on this term, finding bn=0.067±0.005stat+0.090−0.061sys, consistent with the standard model. The uncertainty is dominated by absolute energy reconstruction and the linearity of the β spectrometer energy response.
Keywords
  • First,
  • Direct Constraints,
  • Fierz Interference,
  • Free-Neutron,
  • β Decay
Disciplines
Publication Date
November 10, 2017
DOI
10.1103/PhysRevC.96.059901
Publisher Statement
©2017 American Physical Society. Authors have the nonexclusive right to post the APS-prepared version of the article to an institutional repository. This document was originally published in Physical Review C.
Citation Information
Kevin P. Hickerson, Xiaohui Sun, Yelena Bagdasarova, David Bravo-Berguño, et al.. "First Direct Constraints on Fierz Interference in Free-Neutron β Decay" Physical Review C Vol. 96 Iss. 5 (2017) ISSN: 2469-9985
Available at: http://works.bepress.com/robert-pattie/2/