Summary
We calculate the effects of simple symmetry breaking on the decay rates of charmed mesons using a chiralU 4 effective Lagrangian to describe the mesons. We find that the D+, unlike the F+ and D0, has no relatively large two-body decay into pseudoscalar mesons. Neutrino-induced μ−e+ events contain hints of these radically different decays of the D0 and D+.
Riassunto
Si calcolano gli effetti di una semplice rottura di simmetria sui valori di decadimento di mesoni incantati, per mezzo di una lagrangiana effettiva della simmetria chiraleU 4 per descrivere i mesoni. Si trova che D+ diversamente da F+ e D0 non subisce decadimenti a due corpi relativamente grandi in mesoni pseudoscalari. Gli eventi μ−e+ indotti dal neutrino contengono prove di questi decadimenti radicalmente differenti di D0 e D+.
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Work supported in part by funds granted by the Wisconsin Alumni Research Foundation and in part by the Energy Research and Development Administration under contract E(11-1)-881, COO-575.
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Singer, M. Simple symmetry breaking and decays of charmed mesons. Nuov Cim A 42, 25–32 (1977). https://doi.org/10.1007/BF02730304
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DOI: https://doi.org/10.1007/BF02730304