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Effects on scalar meson decays of strong mixing between low and high mass scalar mesons

T Teshima, I Kitamura and N Morisita

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We analyse the mass spectroscopy of low mass scalar nonet and high mass scalar nonet+glueball and get the result that the strengths of the inter-mixing between low and high mass scalar mesons are very strong and the strengths of mixing for I = 1, 1/2 scalar mesons and those of I = 0 scalar mesons are almost the same. We perform a χ2 fit based on the decay widths and ratios of these mesons to estimate the effects of inter-mixing and get the result that the inter-mixing has large effects for these decay processes and f0(1710) is preferred as glueball rather than f0(1500). Best-fit values for the coupling constants A, A' and A'' which represent the couplings of low mass scalar meson N to two pseudoscalar mesons PP, high mass scalar meson N' to PP and glueball G to PP, respectively are obtained as (A, A', A'') = (4.0 ± 1.1 GeV−1, 1.8 ± 0.3 GeV−1, − 0.64 ± 0.04 GeV−1).


PACS

14.40.Lb Charmed mesons

13.25.Ft Decays of charmed mesons

Subjects

Particle physics and field theory

Dates

Issue 5 (May 2004)

Received 1 December 2003

Published 19 March 2004



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