New reults of the t-system from DORIS
H. Schröder · AIP conference proceedings · 1981
Further studies of e+e− annihilations in the e region at the DESY storage ring DORIS have yielded improved results on the properties of the e mesons. For the e‐meson the letponic width Gee and branching ratios Bmm are found to be Gee = 1.29±0.07 keV and Bmm = 3.2±0.8%. This gives a total width of the e‐meson of Gtot = 40±138 keV. ehe leptonic width the e′meson was determined to Gee(e′) = 0.57±0.06 keV.