Study of the Violation of Parity in Nuclear Beta-decay Via a Relative Beta-polarization Measurement With Polarized In-107 Nuclei

Severijns, N.;Prieels, René;Allet, M.;Camps, J.;Wouters, Johan;et.al.
(1993) Yamada Conference 34 / 9th International Conference on Hyperfine Interactions ( HFI-IX ) — Location: OSAKA UNIV, FAC SCI, DEPT PHYS & LAB NUCL STUDIES, TOYONAKA (Japan) (17.August.1992)

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Authors
  • Severijns, N.
    Author
  • Prieels, RenéUCLouvain
    Author
  • Allet, M.
    Author
  • Camps, J.
    Author
  • Deutsch, JulesUCLouvain
    Author
  • Wouters, JohanUnamur
    Author
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Abstract
The first measurements of the longitudinal polarization of positrons emitted by polarized 107In are reported. The positron polarization is deduced from the time-resolved decay spectrum of positronium hyperfine states. Our result is in agreement with the standard electroweak model and provides a new lower limit for the mass of an eventual, predominantly right-handed charged W gauge boson of 220 GeV/c2.
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Severijns, N., Prieels, R., Allet, M., Camps, J., Demoor, P., Deutsch, J., Gimenonogues, F., Holstein, BR., King, BH., Naviliatcuncic, O., Pepe, I., Quin, PA., Schuurmans, P., Siebelink, R., Vanderpoorten, W., Vanhaverbeke, J., Vanneste, L., & Wouters, J. (1993). Study of the Violation of Parity in Nuclear Beta-decay Via a Relative Beta-polarization Measurement With Polarized In-107 Nuclei. Hyperfine Interactions, 78(1-4), 91-96. https://doi.org/10.1007/BF00568121 (Original work published 1993)