AbstractsPhysics

This thesis is a groundwork for a search for the C-violating φ → ωγ decay and the rare ω → l⁺l⁻π⁰ decay with the KLOE detector. A feasibility study of the detection acceptance for the ω → π⁺π⁻π⁰ and ω → l⁺l⁻π⁰ decays produced in the e⁺e⁻ → ωγ_ISR and e⁺e⁻ → ωπ⁰ production channels. A study of the main background to the forbidden φ decay, the e⁺e⁻ → ωγ_ISR process, is performed using a data sample with an integrated luminosity of L = 1.6 fb⁻¹ collected by the KLOE detector at center of mass energy √s = 1019 MeV.