Indication on Dibaryon Resonance Production in Processes of Relativistic Deuteron Fragmentation

摘要

Proton momentum spectra from d-C and d-CH sub 2 fragmentation reactions at 8.9 GeV/c are measured at an angle of theta < 0.4 deg in the region of 4 to 8 GeV/c. Results are described by a model with a deuteron hybrid wave function psisub(d)=psisub(np)-- + beta psisub(6q). Peculiarity observed in the spectra at p approximately 6.6 GeV/c are interpreted as an evidence for a dibaryon resonance with isospin I=0, mass and width M approximately equal to 2.14 GeV/c exp 2 , GITA approximately 80 MeV/c exp 2 , respectively. (Atomindex citation 15:012163)