Search for η in two-photon collisions at LEP II with the DELPHI detector
Abstract
The pseudoscalar meson η has been searched for in two-photon interactions at LEP II. The data sample corresponds to a total integrated luminosity of 617 pb-1 at centre-of-mass energies ranging from 161 to 209 GeV. Upper limits at a confidence level of 95% on the product Γ(η)×BR(η) are 190, 470 and 660 eV/c for the η decaying into 4, 6 and 8 charged particles, respectively.
- Publication:
-
Physics Letters B
- Pub Date:
- March 2006
- DOI:
- 10.1016/j.physletb.2006.01.058
- arXiv:
- arXiv:hep-ex/0601042
- Bibcode:
- 2006PhLB..634..340D
- Keywords:
-
- High Energy Physics - Experiment
- E-Print:
- 11 pages, 3 figures, Accepted by Phys. Lett. B