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Ks0Ks0 final state in two-photon collisions and implications for glueballs

CollaborationWith : Achard, Pablo / Ambrosi, Giovanni / Bourquin, Maurice / Braccini, Saverio / Chamizo Llatas, Maria / Deglon, Patrick / Delmeire, Evelyne / Extermann, Pierre / Field, John / Kienzle, Maria-Novella / Malgeri, Luca / Pohl, Martin
Published in Physics Letters. B. 2001, vol. 501, no. 1-2, p. 173-182
Abstract The Ks0Ks0 final state in two-photon collisions is studied with the L3 detector at LEP using data at centre of mass energies from 91 GeV to 183 GeV. The Ks0Ks0 mass spectrum is dominated by the formation of the f2′(1525) tensor meson whose two-photon partial width is measured. Clear evidence for destructive f2-a2 interference is observed. No signal is present in the region around 2.2 GeV. An upper limit for the two-photon partial width times the Ks0Ks0 branching ratio of the ξ(2230) glueball candidate is then derived. An enhancement is observed around 1750 MeV. It may be due to the formation of a radial recurrence of the f2′(1525) or to the member of the 0++ meson nonet.
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L3 COLLABORATION. Ks0Ks0 final state in two-photon collisions and implications for glueballs. In: Physics Letters. B, 2001, vol. 501, n° 1-2, p. 173-182. https://archive-ouverte.unige.ch/unige:44043

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Deposited on : 2014-12-19

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