Parity violation in nuclei
A summary of parity violating effects in nuclei is given. Thanks to vigorous experimental and theoretical effort, it now appears that a reasonably well-defined value for the weak isovector ..pi..-nucleon coupling constant can be obtained. There is one major uncertainty in the analysis, namely the M2/E1 mixing ratio for the 2.79 MeV transition in /sup 21/Ne. This quantity is virtually impossible to calculate reliably and must be measured. If it turns out to be much larger than 1, then a null result in /sup 21/Ne is expected no matter what the weak interaction, so an experimental determination is urgently needed. The most promising approach is perhaps a measurement of the pair internal conversion coefficient. Of course, a direct measurement of a pure isovector case is highly desirable, and it is to be hoped that the four ..delta..T = 1 experiments will be pushed still further, and that improved calculations will be made for the /sup 6/Li case. Nuclear parity violation seems to be rapidly approaching an interesting and useful synthesis.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 6114380
- Report Number(s):
- CONF-8006136-2; ON: DE81023420; TRN: 81-015699
- Resource Relation:
- Conference: International conference on neutrino physics and astrophysics, Erice, Trapani, Italy, 23 Jun 1980
- Country of Publication:
- United States
- Language:
- English
Similar Records
Parity and time reversal violations in T/F
Calculation of parity violating effects in the 6/sup 2/P/sub 1/2/-7/sup 2/P/sub 1/2/ forbidden M1 transition in thallium. [E1 amplitude, circular dichroism, parity violation, hyperfine structure]