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One-body parity and time reversal violating potentials

Griffiths, A. and Vogel, P. (1991) One-body parity and time reversal violating potentials. Physical Review C, 43 (6). pp. 2844-2848. ISSN 0556-2813. http://resolver.caltech.edu/CaltechAUTHORS:GRIprc91c

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Abstract

It is of great importance to relate the results of nuclear gamma-ray distribution measurements to the fundamental parity (P) and time (PT) violating meson-nucleon coupling constants. To facilitate this program we derive a one-body mean-field potential from the two-body PT violating pion-exchange potentials. This potential includes a suppression due to the finite meson range of about 0.7 in the rare-earth nuclei and 0.4 in the s-d shell nuclei. We compare exact numerical results to an approximate analytic formula and find good agreement. We discuss the energy distribution of the nuclear PT violating impurity. This is overwhelmingly concentrated at relatively large excitation energies, around 1ħω. Nevertheless, in heavier deformed nuclei there is a small PT violating strength at low energies due to the interaction of natural parity states with the unnatural parity intruder subshell. This impurity can be significantly enhanced due to the small energy denominators.


Item Type:Article
Additional Information:©1991 The American Physical Society Received 26 December 1990 In part, the numerical calculations described here have been performed on the Cray Y-MP at the San Diego Supercomputing Center; its support is gratefully acknowledged. This work was supported by the U.S. Department of Energy under Contract No. DE-F603-88ER-40397.
Record Number:CaltechAUTHORS:GRIprc91c
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:GRIprc91c
Alternative URL:http://dx.doi.org/10.1103/PhysRevC.43.2844
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5977
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:10 Nov 2006
Last Modified:26 Dec 2012 09:16

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