Search for three-baryon resonances in the mass spectrum of a pnn system in the tp → ppnn reaction at pt = 2.5 GeV/c
Blinov A. V., Vanyushin I. A. , Voitenko I. D., Grechko V. E., Ergakov V.A., Zombrovskii S. M., Kondratyuk L. A., Korolev Yu. V. , Selektor Ya. M. , Solov'ev V. V. , Trebukhovskii Yu. V. , Turov V. F. , Chuvilo I. V. , Shulyacnenko V. N.
A search for three-baryon resonances В3 in the mass spectra of pFnn andpsnn systems in the range 2.84-3.04 GeV in the tp^ppnn reaction at 2.5-GeV/c momentum of tritium nuclei was conducted. Clearly manifested structures were observed in the mass spectrum of the ρ Fnn system at 2.94 and 3.01 GeV and in the mass spectrum of the psnn system at 2.9 GeV. The resonance origin of these structures, however, is questionable, since they are satisfactorily described by the pole model.