LPNHE, École Polytechnique, 91128 Palaiseau, France;Collège de France, 75005 Paris, France;Laboratoire de l''Accélérateur Linéaire, 91405 Orsay, France
Abstract:
In π?p interactions at 9 GeV/c and 12 GeV/c, the forward production of N11680 and N11520 has been observed with features of nucleon exchange. The production of Δ1232 is strongly suppressed.