Implications of the possibility that sin(2 beta) is small

Abstract

Recently, the Babar and Belle collaborations have reported their first measurements of the CP-violating asymmetry in Bd --> psi KS, and more precise results will follow soon. We discuss what a future evidence for small sin(2 beta) could mean, contrasting the usual possibility of new physics in the Bd system, with the interesting alternative that the new physics effects are confined to the kaon system.

3 pages, revtex and psfig, 2 eps figures included

References in corpus (2)

• The use of early data on B --> rho pi decays
• Extracting Weak Phase Information from B -> V_1 V_2 Decays

Cited by in corpus (15)

• QCD Factorization in B -> pi K, pi pi Decays and Extraction of Wolfenstein Parameters
• CP Violation in the B System and Relations to $K\to \pi \nu \bar{\nu }$ Decays
• $\Delta M_s/\Delta M_d$, $\sin 2\beta$ and the angle $\gamma$ in the Presence of New $\Delta F=2$ Operators
• Constraining models with vector-like fermions from FCNC in K and B physics
• Bounds on the Unitarity Triangle, $\sin 2\beta$ and $K\to \pi \nu \bar{\nu }$ Decays in Models with Minimal Flavour Violation
• General Analysis of New Physics in $B\to J/\psi K$
• Signals of Supersymmetric Flavour Models in B Physics
• Tree-level FCNC in the B system: from CP asymmetries to rare decays
• CP Asymmetry Measurements in psi K0 and the CKM Paradigm
• Gluino-squark contributions to CP violations in the kaon system
• Can R-parity violation lower $\sin 2\beta$?
• Present and Future CP Measurements
• Texture Specific Mass Matrices and CP violating asymmetry in B^o_d({\bar B}^o_d) -> ψK_S
• Supersymmetric origin of a low $a_{J/psi}$ CP asymmetry
• Theory of CP Violation in the B-Meson System