New physics in CP violation experiments

Abstract

CP violation plays a privileged role in our quest for new physics beyond the electroweak standard model (SM). In the SM the violation of CP in the weak interactions has a single source: the phase of the quark mixing matrix (the CKM matrix, for Cabibbo-Kobayashi-Maskawa). Most extensions of the SM exhibit new sources of CP violation. For instance, the truly minimal supersymmetric extension of the SM (CMSSM) has two new phases in addition to the CKM phase. Given that CP violation is so tiny in the kaon system, is still largely unexplored in B physics and is negligibly small in the electric dipole moments, it is clear that new physics may have a good chance to manifest some departure from the SM in this particularly challenging class of rare phenomena. On the other hand, it is also apparent that CP violation generally represents a major constraint on any attempt at model building beyond the SM. In this review we tackle these two sides of the relation between CP violation and new physics. Our focus will be on the potentialities to use CP violation as a probe on Supersymmetric (SUSY) extensions of the SM. We wish to clarify the extent to which such indirect signals for SUSY are linked to a fundamental theoretical issue: is there a relation between the mechanism that originates the whole flavor structure and the mechanism that is responsible for the breaking of supersymmetry? Different ways to answer this question lead to quite different expectations for CP violation in B physics.

47 pages, 3 figures. Invited contribution to appear in Annual Reviews of Nuclear and Particle Science Vol. 51, December 2001

References in corpus (2)

• Measurement of CP-violating asymmetries in B0 decays to CP eigenstates
• Measurement of the CP Violation Parameter sin(2phi_1) in B^0_d Meson Decays

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• Soft SUSY Breaking Grand Unification: Leptons vs Quarks on the Flavor Playground
• Massive Neutrinos and Flavour Violation
• CP Violation in the B System and Relations to $K\to \pi \nu \bar{\nu }$ Decays
• B_{s,d} -> l^+ l^- and K_L -> l^+ l^- in SUSY models with non-minimal sources of flavour mixing
• Yukawa structure, flavour and CP violation in Supergravity
• Alternative approach to $b->s\gamma$ in the uMSSM
• Light Stop Decay in the MSSM with Minimal Flavour Violation
• Kahler corrections and softly broken family symmetries
• Analysis of enhanced tan(beta) corrections in MFV GUT scenarios
• Light charged Higgs at the beginning of the LHC era
• The FCNC top-squark decay as a probe of squark mixing
• FCNC and CP Violation Observables in a SU(3)-flavoured MSSM
• Electric dipole moments from flavoured CP violation in SUSY
• Invariant approach to flavour-dependent CP-violating phases in the MSSM
• The size of chi = arg (-Vts Vtb* Vcs* Vcb) and physics beyond the Standard Model
• Unitarity Triangles and the Search for New Physics
• CP violation in realistic String Models with family universal anomalous U(1)
• Eviction of a 125 GeV "heavy"-Higgs from the MSSM
• SUSY Seesaw and FCNC