[en] For about twenty years, the glueballs, hypothetical particles predicted by the quantum chromodynamics (QCD) theory, have never been detected with certainty. Thanks to extraordinary complex computer calculations, Donald Weingarten's team from the IBM research center of Yorktown Heights new New York (USA), have claimed that they are now able to define glueballs. According to their calculations, glueballs have been detected several times in the debris from the collision experiments carried out at the SLAC, the CERN or the Pekin Institute for High Energy Physics. A critical commentary of these affirmations is given by Pierre Fayet from the ENS (Ecole Normale Superieure of Paris, France). This short paper gives also a short recall of the gluon model and of glueballs properties according to QCD theory. (J.S.). 1 fig., 1 photo