The kaon–deuteron correlations are well described with an effective two-body model that incorporates both the Coulomb interaction and strong interaction between the kaon and the deuteron.

The telltale sign of those interactions is the production of a particle called J/psi, triggered by the photon interacting with gluons inside the deuteron. “I found 350 J/psi.

Scientists Hunt For Universe's Primordial Matter: Exciting First Results From Deuteron-Gold Collisions At Brookhaven Date: June 13, 2003 Source: Brookhaven National Laboratory Summary: The latest ...