Résumé : We present evidence for a new narrow state decaying into øπ+ with a mass of 2145 ± 10 MeV/c2 and an experimental width of 25 MeV/c2, produced in K+p interactions at 32 GeV/c. The production cross section σ · BR (→øπ+) is equal to 11 ± 3 μb. © 1980, All rights reserved.