Observation of Observation of tensor glueball in the reactions p anti-p -> pi-pi, eta-eta, eta-eta'

Details Observation of Observation of tensor glueball in the reactions p anti-p -> pi-pi, eta-eta, eta-eta' Observation of Observation of tensor glueball in the reactions p anti-p -> pi-pi, eta-eta, eta-eta'

2005-04-14

arxiv.org/abs/hep-ph/0504106v1

JETPLett.81:417-423,2005; PismaZh.Eksp.Teor.Fiz.81:531-537,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 5 figures

Scientific paper

10.1134/1.1984021

Partial wave analysis of the reactions p anti-p -> pi-pi, eta-eta, eta-eta' in the region of invariant masses 1900-2400 MeV indicates to the existence of four relatively narrow tensor-isoscalar resonances f_2(1920), f_2(2020), f_2(2240), f_2(2300) and the broad state f_2(2000). The determined decay couplings of the broad resonance f_2(2000)-> pi0-pi0, eta-eta, eta-eta' satisfy the relations appropriate to those of tensor glueball, while the couplings of other tensor states do not, thus verifying the glueball nature of f_2(2000).

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