ηc(2980) production in γγ interactions has been detected via its decays into K 0 s K ± π ∓ , K + K -K + K -and K + K -π + π -in the data taken with the DELPHI detector at LEP1 and LEP2 energies. The two-photon radiative width averaged over all observed decay channels is Γγγ = 13.9 ± 2.0 (stat.) ± 1.
Search for ηb in two-photon collisions with L3 detector at LEP
✍ Scribed by C. Palomares
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 519 KB
- Volume
- 117
- Category
- Article
- ISSN
- 0920-5632
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✦ Synopsis
A search for the pseudoscalar meson η b is performed in two-photon interactions using the L3 detector at LEP. The data sample corresponds to a total integrated luminosity of 610 pb -1 collected at the centre-of-mass energies from 189 GeV to 209 GeV. Preliminary results of the analysis in the η b mass region are presented. Several candidate events are found in different final states.
📜 SIMILAR VOLUMES
Baryon pair production in two-photon collisions is studied with the L3 detector at LEP. The following reactions are identified: y-y ---) pj5, yy + Ax, yy -+ Co-' and y-y -+ AZ0 + C°K. The analyses are based on data collected at e+e-center-of-mass energies from 91 GeV to 208 GeV, corresponding to an