The effects of p-w mixing in radiative vector meson decays

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Tezin Türü: Doktora

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü, Türkiye

Tezin Onay Tarihi: 2003

Öğrenci: AYŞE KÜÇÜKARSLAN

Danışman: OSMAN YILMAZ

Özet:

The radiative ? ? p0p0?, ? ? p0p0?, ? ? p+p-? and ? ? p+p-? decays are studied by adding the effect of vector meson mixing to the amplitude of these decays. For the above decays we consider only ? - ? mixing. In addition to the ? - ? mixing, we also analyse the contributions coming from different intermediate states to examine the decay mechanism of these decays in a phenomenological framework. For ? ? p0p0? decay, we consider the contributions of the ?-meson and s-meson intermediate states and of the kaon-loop, and for the ? ? p0p0? decay we calculate the amplitude using the contributions of the ?-meson and s-meson intermediate states and pion-loop. Moreover, the radiative ? ? p+p-? decay is studied by considering the contributions of s-meson and ?-meson intermediate states and the decay ? ? p+p-? is investigated by taking into account the contributions of bremmsstrahlung, pion-loop and s- meson intermediate state amplitude. We also estimate the coupling constant g?s? utilizing the latest experimental value of the branching ratio ? ? p0p0?.