D-Dbar mixing and new physics: general considerations and constraints on the MSSM

Abstract

Combining the recently available experimental evidence of D-Dbar mixing, we extract model-independent information on the mixing amplitude and on its CP-violating phase. Using this information, we present new constraints on the flavour structure of up-type squark mass matrices in supersymmetric extensions of the Standard Model.

4 pages, 3 figures. v2: additional measurements added, analysis improved, B-parameters added. v3: experimental numbers updated, final version to appear in PLB

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