A remark concerning 20 plet dominance in charm decays

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Based on V spin consideration, it is argued that 20 plet dominance in the effective weak Lagrangian does not strongly reduce the inclusive decay rate of D/sup +/ mesons. Decays of the type D to K rho , K* pi , rho pi are discussed in pointing out that 20 dominance should lead to a large enhancement...

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Detalles Bibliográficos
Autor principal: Bigi, Ikaros I
Lenguaje:eng
Publicado: 1980
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1007/BF01427925
http://cds.cern.ch/record/879313
Descripción
Sumario:Based on V spin consideration, it is argued that 20 plet dominance in the effective weak Lagrangian does not strongly reduce the inclusive decay rate of D/sup +/ mesons. Decays of the type D to K rho , K* pi , rho pi are discussed in pointing out that 20 dominance should lead to a large enhancement of D/sup +/ to K/sup 0/ rho /sup +/, (K/sup 0/)* pi /sup +/ over D/sup +/ to K/sup 0/ pi /sup +/; W exchange, on the other hand, leads to a sizeable suppression of D/sup 0/ to K/sup -/ rho /sup +/, (K/sup -/)* pi /sup +/ relative to D/sup 0/ to K/sup -/ pi /sup +/. (4 refs).

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