Semileptonic Decays of Charmed Mesons Produced in electron-Positron Annihilation
Apr, 1977
34 pages
Published in:
- Phys.Rev.D 16 (1977) 732
Report number:
- ITP-SB-76-62-REV,
- ITP-SB-76-62
Citations per year
Abstract: (APS)
In this paper we study a few models for the inclusive semileptonic decays as well as a few exclusive decays of the charmed meson D(1865), recently discovered at SPEAR. We calculate the electron distributions for the sequence e++e−→D¯*+D→D¯+π+D followed by D→e+ν+⋯, at the center-of-mass energy 4.1 GeV. The results are compared with the recent findings of a DESY experiment carried out at center-of-mass energies between 4.0 and 4.2 GeV by Braunschweig et al. We conclude that D→e+ν+K* is most likely the dominant semileptonic decay mode of the D meson. Furthermore, the decay structure for D→e+ν+K* favors a phenomenological (V+A)(V−A) form, as is dictated by an underlying charm scheme. This may be viewed as an indirect, and another partial confirmation of the weak-interaction scheme of charm. We also present results for dilepton production, for the afore-mentioned sequence of production and decay. The lepton distributions for the sequence of e++e−→D++D− followed by D→e+ν+K* (or K), at the center-of-mass energy 3.9 GeV, is also calculated.Note:
- Revised version
- ELECTRON POSITRON: ANNIHILATION
- ANNIHILATION: ELECTRON POSITRON
- CHARMED PARTICLE: ELECTROPRODUCTION
- ELECTROPRODUCTION: CHARMED PARTICLE
- CHARMED PARTICLE: PAIR PRODUCTION
- PAIR PRODUCTION: CHARMED PARTICLE
- CHARMED PARTICLE: MESON
- NEW PARTICLE: D(1865)
- CHARMED PARTICLE: SEMILEPTONIC DECAY
- INCLUSIVE REACTION: SEMILEPTONIC DECAY
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