$\pi \Delta\Delta$ coupling constant
  We calculate the $\pi \Delta\Delta$ coupling $g_{\pi^0\Delta^{++}\Delta^{++}}$ using light cone QCD sum rule. Our result is $g_{\pi^0\Delta^{++}\Delta^{++}}=(11.8\pm 2.0)$. 
Shi-Lin Zhu (Department of Physics, University of Connecticut)