The Polarization Asymmetry Correlation of In-107 and Parity Violation
(1992) 2ND INTERNATIONAL CONF ON ON-LINE NUCLEAR ORIENTATION ( OLNO-2 ) — Location: JOINT INST HEAVY ION RES, OAK RIDGE (Tn) (16.October.1991)
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- Abstract
- We report on the first measurements of the longitudinal polarization of positrons emitted by polarized nuclei, using cryogenically polarized 107In. 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.
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Severijns, N., Prieels, R., Deutsch, J., Gimenonogues, F., Pepe, I., Quin, PA., Demoor, P., Schuurmans, P., Siebelink, R., Vanderpoorten, W., Vanhaverbeke, J., Vanneste, L., Wouters, J., Allet, M., & Naviliatcuncic, O. (1992). The Polarization Asymmetry Correlation of In-107 and Parity Violation. Hyperfine Interactions, 75(1-4), 181-188. https://doi.org/10.1007/BF02398975 (Original work published 1992)