Spontaneous CP violation in a SUSY model with a complex CKM |
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Authors: | GC Branco D Emmanuel-Costa JC Romão |
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Institution: | 1. Departamento de Física and Centro de Física Teórica de Partículas (CFTP), Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal;2. Physik-Department, Technische Universität München, James-Franck-Strasse, D-85748 Garching, Germany |
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Abstract: | It is pointed out that the recent measurement of the angle γ of the unitarity triangle, providing irrefutable evidence for a complex Cabibbo–Kobayashi–Maskawa (CKM) matrix, presents a great challenge for supersymmetric models with spontaneous CP violation. We construct a new minimal extension of the minimal supersymmetric standard model (MSSM), with spontaneous CP breaking, which leads to a complex CKM matrix, thus conforming to present experimental data. This is achieved through the introduction of two singlet chiral superfields and a vector-like quark chiral superfield which mixes with the standard quarks. A Z3 symmetry is introduced in order to have a potential solution to the strong CP problem. |
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Keywords: | 11 30 Er 11 30 Qc 12 15 Ff 12 15 Hh 12 60 -i |
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