Strong Couplings of X(3872)_{J=1,2} and a New Look at J/psi Suppression   in Heavy Ion Collisions
  We define and compute from data the strong couplings of the X(3872) with both of the possible quantum numbers assignments J^{PC}=1^{++},2^{-+}. We use these to compute cross sections for J/psi resonance scattering into D Dbar*. As an application of the results obtained we revise the calculation of the J/psi absorption in a hot hadron gas to confront with recent RHIC observations in Au-Au collisions. 
Federico Brazzi, Benjamin Grinstein, Fulvio Piccinini, Antonio Davide   Polosa and Chiara Sabelli
hep-ph