Predicting exotic hadron masses from supersymmetry and a quark-diquark model

Hadron supersymmetry is used to obtain estimates of the masses of some exotic hadrons within the framework of the constituent quark model. Supersymmetry breaking is explicitly taken into account. The exotic masses are predicted from the masses of ordinary mesons and baryons as input with no free parameters. Most of the predicted exotics lie well above threshold for strong decay into ordinary hadrons, and so will be difficult to observe. One of the unbound exotics is the so-called H dibaryon, composed of uuddss quarks. In the model a few exotics containing b quarks may be bound against strong decay and so decay weakly. (author)