The angular distributions of the decay c+e+e have been studied using the CLEO II detector. By performing a three-dimensional maximum likelihood fit, the form factor ratio R=f2/f1 is determined to be -0.250.140.08. The decay asymmetry parameter of the c averaged over q2 is calculated to be c=-0.82-0.06-0.03+0. 09+0.06.
ASJC Scopus subject areas
- Physics and Astronomy(all)