Observation of a narrow resonance at 9.46 GeV in electron - positron annihilations
Abstract
We observe a narrow resonance in the reaction e +e - → hadrons using the DASP detector at the DORIS storage ring. The mass is found to be (9.46 ± 0.01) GeV and the observed width is compatible with the storage ring resolution of ±8 MeV. The energy-integrated cross section results in an electronic width Γee = (1.3 ± 0.4) keV.
- Publication:
-
Physics Letters B
- Pub Date:
- May 1978
- DOI:
- 10.1016/0370-2693(78)90288-5
- Bibcode:
- 1978PhLB...76..246D