\@doendnote{endnote5}{The six-fermion interaction\protect \nobreakspace  {}(\ref {six}) expands to terms of the form: $(\mathaccent "7016\relax u^\alpha (1-\gamma _5)u_\alpha )(\mathaccent "7016\relax d^\alpha (1-\gamma _5)d_\alpha )(\mathaccent "7016\relax s^\alpha (1-\gamma _5)s_\alpha )$. Upon appropriate Fierz rearrangement of, {\protect \it  e.g.}, $(\mathaccent "7016\relax d^\alpha (1-\gamma _5)d_\alpha )(\mathaccent "7016\relax s^\alpha (1-\gamma _5)s_\alpha )$, one obtains: $C \times (\mathaccent "7016\relax u^\alpha (1-\gamma _5)u_\alpha ) \protect \@mathbbmss {q}^{1\gamma }{\mathaccent "7016\relax \protect \@mathbbmss {q}}_{1\gamma }$, $C$ being a constant factor.}
\@doendnote{endnote6}{we assumed $\sigma (e^+e^-\protect \ensuremath  {\rightarrow }\protect \xspace  Y)*{\protect \ensuremath  {\protect \cal  B}\protect \xspace  }\protect \nobreakspace  {}50pb$ as measured for the $Y(4320)$ in Ref.\protect \nobreakspace  {}\cite {Aubert:2006ge} and require at least ten thousand events per resonance}