Scalar meson contributions to radiative vector meson decays

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2001

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Saraç, Yasemin

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https://hdl.handle.net/11511/10807

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Graduate School of Natural and Applied Sciences, Thesis

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Scalar mesons in radiative phi ->(KK-0)-K-0 gamma decay Gokalp, A.; Korkmaz, C. S.; Yılmaz, Osman (American Physical Society (APS), 2007-01-01) We study the radiative phi -> K-0(K) over bar (0)gamma decay within a phenomenological framework by considering the contributions of the f(0)(980) and a(0)(980) scalar resonances. We calculate the branching ratio B(phi -> K-0(K) over bar (0)gamma) by employing the coupling constants g(f0)K(+)K(-) and g(a0)K(+)K(-) as determined by different experimental groups.
Scalar mesons in radiative phi-meson decays into neutral k-meson states Korkmaz (Şişman), Canan; Yılmaz, Osman; Department of Physics (2006) Radiative Decays of the phi-meson to the scalar mesons f0(980) and a0(980) are investigated within the framework of charged kaon loop model for both point-like scalar mesons and for scalar mesons with extended structure. Then, the radiative phi-meson decay into neutral K-meson is studied via a two step mechanism in which the scalar mesons couple the final state to the phi-meson through the charged kaon loop. The branching ratio of this decay is calculated and it is shown that this reaction will not provide ...
Scalar mesons in radiative phi-meson decays into charged k-meson states Öztürk, Fahri; Gökalp, Ahmet; Department of Physics (2008) The role of $f_{0}(980)$ and $a_{0}(980)$ scalar meson intermediate states in the mechanism of radiative $\phi (1020)$ meson decay into two charged $K (494)$ mesons and a photon $\phi\rightarrow K^{+} + K^{-} + \gamma$ is investigated. For the contribution of scalar meson intermediate state two models are considered. In the kaon-loop model, the scalar meson intermediate state couples the final state to the initial $\phi$ meson through a charged kaon-loop. The second model, called no-structure model, consist...
Scalar sigma meson effects in radiative rho(0)-meson decays Gokalp, A; Solmaz, S; Yılmaz, Osman (2003-04-01) We study the radiative rho(0)-->pi(+)pi(-)gamma and rho(0)-->pi(0)pi(0)gamma decays and we calculate their branching ratios using a phenomenological approach by adding to the amplitude calculated within the framework of chiral perturbation theory and vector meson dominance the amplitude of sigma-meson intermediate state. Our results for the branching ratios are in good agreement with the experimental values.
Scalar meson effects in radiative decays of vector mesons Kerman (Solmaz), Saime; Gökalp, Ahmet; Department of Physics (2003) The role of scalar mesons in radiative vector meson decays is investigated. The effects of scalar-isoscalar f_{0}(980) and scalar-isovector a_{0}(980) mesons are studied in the mechanism of the radiative Phi->pi{+}pi{-}gamma and phi->pi{0}eta gamma decays, respectively. A phenomenological approach is used to study the radiative phi->pi{+}p{-}gamma decay by considering the contributions of sigma-meson, rho-meson and f_{0}-meson. The interference effects between different contributions are analyzed and the br...

Citation Formats

Y. Saraç, “Scalar meson contributions to radiative vector meson decays,” Middle East Technical University, 2001.