Observation of structures in the invariant masses of two nucleons in the disintegration of the deuteron by protons
Andreev V. P. , Kravtsov A. V. , Makarov M. M. , Medvedev V. I. , Obrant G. Z., Poromov V. I. , Sarantsev V. V. , Sokolov G. L. , Sokornov A. B., Sherman S. G.
The effective-mass spectra of two nucleons in the reaction pd -»ppn9 in which one of the nucleons is emitted into the rear hemisphere, have been studied. A selection of events with large momenta and/or large angles between the nucleoli emission directions in the spectra of Mpn and Mpp reveals several narrow structural features (M= 1.95, 2.03, 2.08, and 2.14 GcV/c2).