Search for γγ→ηb in e+e− collisions at LEP 2
2002
A search for the
pseudoscalar mesoneta_b is performed in two-photon interactions at LEP~2 with an integrated luminosity of 699 pb^-1 collected at e+e- centre-of-mass energies from 181 GeV to 209 GeV. One candidate event is found in the six-
charged-particlefinal state and none in the four-
charged-particlefinal state, in agreement with the total expected background of about one event. Upper limits of Gamma_gammagamma(eta_b) * BR(eta_b -> 4
charged particles) 6
charged particles) < 132 eV are obtained at 95% confidence level, which correspond to 95% confidence level upper limits of 9.0% and 25% on these branching ratios.
Keywords:
-
Correction
-
Source
-
Cite
-
Save
25
References
35
Citations
NaN
KQI