Low-Mass Baryon-Antibaryon Enhancements in B Decays

Abstract

The nature of low-mass baryon-antibaryon enhancements seen in B decays is explored. Three possibilities include (i) states near threshold as found in a model by Nambu and Jona-Lasinio, (ii) isoscalar states with $J^{PC}=0^{\pm +}$ coupled to a pair of gluons, and (iii) low-mass enhancements favored by the fragmentation process. Ways of distinguishing these mechanisms using angular distributions and flavor symmetry are proposed.

8 pages, LaTeX, no figures, to be submitted to Phys. Rev. D. One reference added

References in corpus (6)

• Observation of B0 to p Lambdabar pi-
• Measurement of Exclusive B Decays to Final States Containing a Charmed Baryon
• Final-State Phases in $B\to D\pi ,D^{\ast }\pi$, and $D\rho$ Decays
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• Three-Body Charmful Baryonic B Decays $\bar{B}\to D(D^{\ast })N\bar{N}$
• Final-State Phases in $B\to$ Baryon-Antibaryon Decays

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• Meson-Baryon Scattering in QCD_2 for any Coupling
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