Abstract
In two series of high-resolution coincidence experiments at the three-spectrometer facility at MAMI, the and reactions were studied to search for narrow nucleon resonances below pion threshold. The missing-mass resolution was full width at half maximum in the proton experiment and in the deuteron experiment. The experiments covered the missing-mass region from the neutron mass up to about 1050 and respectively. None of our measurements showed a signal for narrow resonances to a level of down to with respect to the neutron peak in the missing-mass spectra.
- Received 18 December 2002
DOI:https://doi.org/10.1103/PhysRevC.67.065204
©2003 American Physical Society