Low mass baryon anti-baryon enhancements in B decays

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.

13.75.Cs
14.40.Cs
13.25.Hw
14.40.Nd
B: hadronic decay
decay: exclusive reaction
baryon: pair production
yield: enhancement
anti-p p: bound state
quantum number

References(44)

Figures(0)

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