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Parity mixing in ^(21)Ne; evidence for weak neutral currents in nuclei

Earle, E. D. and McDonald, A. B. and Adelberger, E. G. and Snover, K. A. and Swanson, H. E. and von Lintig, R. and Mak, H. B. and Barnes, C. A. (1983) Parity mixing in ^(21)Ne; evidence for weak neutral currents in nuclei. Nuclear Physics A, 396 (3). pp. 221-229. ISSN 0375-9474. doi:10.1016/0375-9474(83)90021-0.

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The parity nonconserving circular polarization of γ-rays from the 2.789 → 0.0 MeV transition in ^(21)Ne is found to be (0.8 ± 1.4) × 10^(−3), which corresponds to a parity mixing matrix element │〈H_W〉│ = 0.009 ± 0.016 eV between the two members of the 2.8 MeV doublet. This matrix element can be combined with parity mixing matrix elements measured in ^(18)F and ^(19)F to predict isoscalar and isovector weak nucleon-nucleon coupling constants in excellent agreement with theoretical “best” values obtained in a Weinberg-Salam model calculation.

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Additional Information:© 1983Elsevier. We wish to thank for valued assistance, George Ewan during data collection and Mike Wood and Francis Rozon during data analysis.
Issue or Number:3
Record Number:CaltechAUTHORS:20150915-135914827
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60260
Deposited By: Ruth Sustaita
Deposited On:15 Sep 2015 23:07
Last Modified:10 Nov 2021 22:31

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