Speaker
Ken Hicks
(Ohio University)
Description
Using the technique of target rescattering of nucleons off protons, the reactions np -> d pi0 and pp -> d pi+ have been measured using the CLAS detector. For pure resonance productions, these reactions should be related by isospin. The total cross sections, as a function of the center-of-mass energy, W, for both reactions show a peak in the invariant mass of the deuteron and pion at about 2145 MeV. Results for the pp -> d pi+ reaction agree with previous measurements, whereas the np -> d pi0 cross sections are new. Together, these results suggest that this d* resonance has isospin 1, as predicted many years ago using SU(6) symmetry.
Primary author
Ken Hicks
(Ohio University)
