Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9851159 | Nuclear Physics A | 2005 | 10 Pages |
Abstract
The nonleptonic weak |ÎS|=1ÎN interaction, responsible for the dominant, nonmesonic decay of all but the lightest hypernuclei, is studied in the framework of an effective field theory. The long-range physics is described through tree-level exchange of the SU(3) Goldstone bosons (Ï and K), while the short-range potential is parametrized in terms of lowest-order contact terms obtained from the most general non-derivative local four-fermion interaction. Fitting to available weak hypernuclear decay rates for 5ÎHe, 11ÎB and 12ÎC yields reasonable values for the low-energy constants.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
A. Parreño, C. Bennhold, B.R. Holstein,