Flavour changing neutral currents and CP violating processes in generalized supersymmetric theories

We consider supersymmetric extensions of the standard model with general non-universal soft breaking terms. We analyse in a model-independent way the constraints on these terms at the electroweak energy scale coming from gluino mediated flavour (F) changing neutral current and CP-violating processes. We have computed the complete Delta F = 1 and Delta F = 2 effective hamiltonian for gluino mediated processes, including for the first time the effect of box diagrams in the evaluation of epsilon'/epsilon. We present numerical results for the constraints on these non-universal soft breaking terms for different values of the parameters, extending the analysis also to the leptonic sector. A comparison with previous results in the literature is given.



Titolo: Flavour changing neutral currents and CP violating processes in generalized supersymmetric theories
Autori: 
GABRIELLI, Emidio
mostra contributor esterni 
Data di pubblicazione: 1996
Rivista: 
PHYSICS LETTERS. SECTION B  
Abstract: We consider supersymmetric extensions of the standard model with general non-universal soft breaking terms. We analyse in a model-independent way the constraints on these terms at the electroweak energy scale coming from gluino mediated flavour (F) changing neutral current and CP-violating processes. We have computed the complete Delta F = 1 and Delta F = 2 effective hamiltonian for gluino mediated processes, including for the first time the effect of box diagrams in the evaluation of epsilon'/epsilon. We present numerical results for the constraints on these non-universal soft breaking terms for different values of the parameters, extending the analysis also to the leptonic sector. A comparison with previous results in the literature is given.
Handle: http://hdl.handle.net/11368/2634206
Digital Object Identifier (DOI): http://dx.doi.org/10.1016/0370-2693(96)00158-X
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