Some rare decay modes of theKmeson in a current-current quark model. I.K→πl+l−decay
- 1 October 1974
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 10 (7), 2091-2094
- https://doi.org/10.1103/physrevd.10.2091
Abstract
decay is calculated in a zero-parameter modified baryon-loop model which has proven successful in describing the weak radiative kaon decays. The weak Hamiltonian is phenomenologically constructed from one-baryon octet matrix elements. The predicted branching ratio of the loop model [with ] compares reasonably with the prediction of a recent gauge-theory calculation of Lee and Gaillard, (with acceptable values ranging between 3 × and 0.5 × ) and is to be compared with the presently available experimental upper bound . We also find the ratio to be essentially zero in the loop model, as opposed to its value of unity in the gauge-model calculation.
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