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The(eta_{c}(2980))formation in two-photon collisions at LEP energies

โœ Scribed by The DELPHI Collaboration

Book ID
111625806
Publisher
Springer-Verlag
Year
2003
Tongue
English
Weight
650 KB
Volume
31
Category
Article
ISSN
1434-6044

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ฮทc(2980) formation in two-photon collisi
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ฮทc(2980) production in ฮณฮณ interactions has been detected via its decays into K 0 s K ยฑ ฯ€ โˆ“ , K + K -K + K -and K + K -ฯ€ + ฯ€ -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 ฮ“ฮณฮณ = 13.9 ยฑ 2.0 (stat.) ยฑ 1.

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A search for the pseudoscalar meson ฮท 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 ฮท b mas