Abstract
The reaction has been studied to search for the evidence of the by detecting pairs at forward angles. The Fermi-motion-corrected invariant mass distribution shows a narrow peak at GeV/. The statistical significance of the peak calculated from a shape analysis is 5.1 σ, and the differential cross section for the reaction is estimated to be nb/sr in the photon energy range from 2.0 to 2.4 GeV in the LEPS angular range by assuming the isotropic production of the in the center-of-mass system. The obtained results support the existence of the .
9 More- Received 4 December 2008
DOI:https://doi.org/10.1103/PhysRevC.79.025210
©2009 American Physical Society