Mass corrections in $J/\psi \to B\bar{B}$ decay and the role of distribution amplitudes

Abstract

We consider mass correction effects on the polar angular distribution of a baryon--antibaryon pair created in the chain decay process $e^{-}{e}^{+}\to J/\psi \to B\bar{B}$, generalizing a previous analysis of Carimalo. We show the relevance of the features of the baryon distribution amplitudes and estimate the electromagnetic corrections to the QCD results.

Comments: 26 pages + 3 figures, REVTEX 3.0, figures appended as uuencoded, tar-compressed postscript file