# Search for $\eta_b$ in two-photon collisions at LEP II with the DELPHI detector

Abstract : 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.
Document type :
Journal articles
Physics Letters B, Elsevier, 2006, 634, pp.340-346. <10.1016/j.physletb.2006.01.058>

http://hal.in2p3.fr/in2p3-00025547
Contributor : Emmanuelle Vernay <>
Submitted on : Wednesday, February 1, 2006 - 2:13:32 PM
Last modification on : Wednesday, March 1, 2006 - 10:35:50 AM

### Citation

J. Abdallah, P. Abreu, W. Adam, P. Adzic, T. Albrecht, et al.. Search for $\eta_b$ in two-photon collisions at LEP II with the DELPHI detector. Physics Letters B, Elsevier, 2006, 634, pp.340-346. <10.1016/j.physletb.2006.01.058>. <in2p3-00025547>

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