Hyperfine Interactions

, Volume 75, Issue 1–4, pp 181–188 | Cite as

The polarization-asymmetry correlation of107In and parity violation

  • N. Severijns
  • R. Prieels
  • J. Deutsch
  • F. Gimeno-Nogues
  • I. Pepe
  • P. A. Quin
  • P. De Moor
  • P. Schuurmans
  • R. Siebelink
  • W. Vanderpoorten
  • J. Vanhaverbeke
  • L. Vanneste
  • J. Wouters
  • M. Allet
  • O. Naviliat-Cuncic
Parity and Time Reversal Tests
  • 19 Downloads

Abstract

We report on the first measurements of the longitudinal polarization of positrons emitted by polarized nuclei, using cryogenically polarized107In. This so-called polarization-asymmetry correlation is very sensitive to the mass of a possible right-handed gauge boson, which is invoked by parity symmetric extensions of the standard V-A electroweak model to explain the experimentally observed strong violation of parity which, however, may not be complete. The positron polarization is deduced from the time-resolved decay spectrum of positronium hyperfine states. Our preliminary result points to a lower limit of about 210 GeV for the mass of an eventual right-handed charged W gauge boson. This result can still be improved.

Keywords

Thin Film Lower Limit Gauge Boson Parity Violation Result Point 

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Copyright information

© J.C. Baltzer A.G., Scientific Publishing Company 1992

Authors and Affiliations

  • N. Severijns
    • 1
  • R. Prieels
    • 1
  • J. Deutsch
    • 1
  • F. Gimeno-Nogues
    • 1
  • I. Pepe
    • 1
  • P. A. Quin
    • 2
  • P. De Moor
    • 3
  • P. Schuurmans
    • 3
  • R. Siebelink
    • 3
  • W. Vanderpoorten
    • 3
  • J. Vanhaverbeke
    • 3
  • L. Vanneste
    • 3
  • J. Wouters
    • 3
  • M. Allet
    • 4
  • O. Naviliat-Cuncic
    • 4
  1. 1.Université Catholique de LouvainLouvain-la-NeuveBelgium
  2. 2.Department of PhysicsUniversity of WisconsinMadisonUSA
  3. 3.Katholieke Universiteit LeuvenLeuvenBelgium
  4. 4.Institut für MittelenergiephysikEidgenössische Technische HochschuleZurichSwitzerland

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