Unparticle effects in rare t → cgg decay
نویسنده
چکیده
Rare t → cgg decay can only appear at loop level in the Standard Model (SM), and naturally they are strongly suppressed. These flavor changing decays induced by the mediation of spin–0 and spin–2 unparticles, can appear at tree level in unparticle physics. In this work the virtual effects of unparticle physics in the flavor–changing t → cgg decay is studied. Using the SM result for the branching ratio of the t → cgg decay, the parameter space of dU and ΛU , where the branching ratio of this decay exceeds the one predicted by the SM, is obtained. Measurement of the branching ratio larger than 10−9 can give valuable information for establishing unparticle physics. e-mail: [email protected] Permanent Address: Institute of Physics, Baku, Azerbaijan e-mail: [email protected] e-mail: [email protected]
منابع مشابه
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We study unparticle physics effects in Λb → Λ + missing energy decay with polarized Λb and Λ baryons. The sensitivity of the branching ratio of this decay and polarizations of Λb and Λ baryons on the scale dimension dU and effective cut–off parameter ΛU are discussed. e-mail: [email protected] permanent address:Institute of Physics,Baku,Azerbaijan e-mail: [email protected]
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