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Testing the new CP phase in a supersymmetric model with Q(6) family symmetry by B(s) mixing.

Kawashima, Kenji and Kubo, Jisuke and Lenz, Alexander (2009) 'Testing the new CP phase in a supersymmetric model with Q(6) family symmetry by B(s) mixing.', Physics letters B., 681 (1). pp. 60-67.


The new contribution to the non-diagonal matrix element M12 of the neutral Bs meson system is investigated in a supersymmetric extension of the standard model based on the discrete Q6 family symmetry. We assume that CP is explicitly, but softly broken only by the b terms in the soft supersymmetry breaking sector. We find that the new contributions to M12 are real, and that nevertheless there exists an observable difference in the CP phase compared with the standard model. We focus our attention on the flavor-specific CP asymmetry View the MathML source, and find that View the MathML source of the model is mostly negative and its size can be one order of magnitude larger the standard model value. This prediction is consistent with the current experimental value, and might be experimentally tested in future.

Item Type:Article
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Publisher statement:© 2009 Elsevier B.V. Open access under CC BY license
Date accepted:No date available
Date deposited:19 August 2015
Date of first online publication:October 2009
Date first made open access:No date available

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