The decay to probe
- 1 January 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 37 (1), 239-242
- https://doi.org/10.1103/physrevd.37.239
Abstract
The semileptonic decay, , is studied in a nonrelativistic picture by treating the pion correctly as a quasi-Nambu-Goldstone boson. The branching ratio is much larger than the value predicted by a two-body bound-state picture for the pion. This decay at the peak in annihilation will be one of the best suited processes to determine the Kobayashi-Maskawa mixing-matrix element .
Keywords
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