6533b82bfe1ef96bd128e20a
RESEARCH PRODUCT
New Physics and Evidence for a Complex CKM
Francisco J. BotellaM.n. RebeloM. NebotGustavo C. Brancosubject
PhysicsNuclear and High Energy PhysicsParticle physicsCabibbo–Kobayashi–Maskawa matrixPhysics beyond the Standard ModelPhase (waves)FOS: Physical sciencesFísicaHigh Energy Physics - PhenomenologyTheoretical physicsHigh Energy Physics - Phenomenology (hep-ph)Interval (graph theory)High Energy Physics::ExperimentParticle Physics - Phenomenologydescription
We carefully analyse the present experimental evidence for a complex CKM matrix, even allowing for New Physics contributions to $\epsilon_{K}$, $a_{J/\Psi K_S}$, $\Delta M_{B_{d}}$, $\Delta M_{B_{s}}$, and the $\Delta I=1/2$ piece of $B\to\rho\rho$ and $B\to\rho\pi$. We emphasize the crucial r\^ ole played by the angle $\gamma$ in both providing irrefutable evidence for a complex CKM matrix and placing constraints on the size of NP contributions. It is shown that even if one allows for New Physics a real CKM matrix is excluded at a 99.92% C.L., and the probability for the phase $\gamma$ to be in the interval $[-170^\circ;-10^\circ]\cup [10^\circ;170^\circ]$ is 99.7%.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-02-14 |