Radiative Decays Involving $f_0(980)$ and $a_0(980)$ and Mixing Between Low and High Mass Scalar Mesons

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dc.creatorTeshima, T.
dc.creatorKitamura, I.
dc.creatorMorisita, N.
dc.date2005-01-10
dc.date.accessioned2026-07-07T10:29:22Z
dc.date.available2026-07-07T10:29:22Z
dc.descriptionWe analyze the experimental data for $ϕ\to f_0(980)γ$, $ϕ\to a_0(980)γ$, $f_0(980)\toγγ$ and $a_0(980)\toγγ$ decay widths in a framework where $f_0(980)$ and $a_0(980)$ are assumed to be mainly $qq\bar{q}\bar{q}$ low mass scalar mesons and mixed with $q\bar{q}$ high mass scalar mesons. Applied the vector meson dominance model (VDM), these decays amplitudes are expressed by coupling parameters $B$ describing the S ($qq\bar{q}\bar{q}$ scalar meson)-V(vector meson)- V(vector meson) coupling and $B'$ describing the S' ($q\bar{q}$ scalar meson)-V-V coupling. Adopting the magnitudes for $B$ and $B'$ as $2.8{GeV^{-1}}$ and $12{GeV^{-1}}$, respectively, the mixing angle between $a_0(980)$ and $a_0(1450)$ as 9 degrees, and the mixing parameter $λ_{01}$ causing the mixing between I=0 $qq\bar{q}\bar{q}$ state and $q\bar{q}$ state as $0.24{GeV}^2$, we can interpret these experimental data, consistently.
dc.description15 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0501073
dc.identifierhttp://arxiv.org/abs/hep-ph/0501073
dc.identifierNucl.Phys.A759:131-142,2005
dc.identifierdoi:10.1016/j.nuclphysa.2005.04.024
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177778
dc.subjectHigh Energy Physics - Phenomenology
dc.titleRadiative Decays Involving $f_0(980)$ and $a_0(980)$ and Mixing Between Low and High Mass Scalar Mesons
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