Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-03-28
Phys.Rev. D64 (2001) 115009
Physics
High Energy Physics
High Energy Physics - Phenomenology
32 pages, including 9 figures, typos and error in fig. 1 corrected, minor modificiation in the text, conclusions unchanged, to
Scientific paper
10.1103/PhysRevD.64.115009
We study extensions of the Standard Model where the charged current weak interactions are governed by the CKM matrix and where all tree-level decays are dominated by their Standard Model contribution. We constrain both analytically and numerically the ratio and the phase difference between the New Physics and the Standard Model contributions to the mixing amplitude of the neutral $B$ system using the experimental results on $R_u$, $\Delta m_{d,s}$, $\epsilon_K$ and $a_{\psi K_S}$. We present new results concerning models with minimal flavor violation and update the relevant parameter space. We also study the left-right symmetric model with spontaneously broken CP, probing the viability of this model in view of the recent results for $a_{\psi K_S}$ and other observables.
Bergmann Sven
Perez Gilad
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