Search for gamma gamma ---> eta(b) in e+ e- collisions at LEP-2

ALEPH Collaboration, The and Heister, A. and Bouhova-Thacker, Evelina and Bowdery, Christopher and Finch, Alexander and Foster, Frank and Hughes, Gareth and Jones, Roger and Smizanska, Maria (2002) Search for gamma gamma ---> eta(b) in e+ e- collisions at LEP-2. Physics Letters B, 530 (1-4). pp. 56-66. ISSN 0370-2693

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A search for the pseudoscalar meson ηb 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-particle final state and none in the four-charged-particle final state, in agreement with the total expected background of about one event. Upper limits of eV, eV are obtained at 95% confidence level, which correspond to upper limits of 9.0% and 25% on these branching ratios.

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Uncontrolled Keywords:
?? nuclear and high energy physics ??
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Deposited On:
03 May 2013 09:21
Last Modified:
15 Jul 2024 13:49