218 articles – 619 references  [version française]
 HAL: in2p3-00025547, version 1
 arXiv: hep-ex/0601042
 Physics Letters B 634 (2006) 340-346
 Search for $\eta_b$ in two-photon collisions at LEP II with the DELPHI detector
 For the DELPHI collaboration(s)
 (2006)
 The pseudoscalar meson eta_b 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 Gamma_{\gamma\gamma}(eta_b) x BR(eta_b) are 190, 470 and 660 eV/c^2 for the eta_b decaying into 4, 6 and 8 charged particles, respectively.
 Subject(s) : Physics/High Energy Physics - Experiment