Oscar Vives

EDM-free supersymmetric CP violation with non-universal soft terms

Non-universality in the soft breaking terms is a common feature in most superstring inspired SUSY models. This property is required to obtain sizeable CP violation effects from SUSY and, on the other hand, can be used to avoid the electric dipole moment (EDM) constraints. We take advantage of these qualities and explore a class of SUSY models based on type I string theory where scalar masses, gaugino masses and trilinear couplings are non-universal. In this framework, we show that, in the presence of large SUSY phases, the bounds on the electric dipole moments can be controlled without fine-tuning. At the same time, we find that these phases, free from EDM constraints, lead to large contributions to the observed CP phenomena in Kaon system and, in particular, to direct CP violation in e′/e.

NEW PHYSICS IN CP VIOLATION EXPERIMENTS

▪ Abstractu2002CP violation plays a privileged role in our quest for new physics beyond the electroweak standard model. In the standard model, 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 standard model exhibit new sources of CP violation. For instance, the truly minimal supersymmetric extension of the standard model 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 standard model 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 standard model. In this review, we tackle these two sides of the relati...

CP conserving constraints on Supersymmetric CP violation in the MSSM

We address the following question. Take the constrained minimal supersymmetric standard model (CMSSM) with the two

Supersymmetric origin of a low aJ/ψ CP asymmetry

mathrm{CP}

Can measurements of 2HDM parameters provide hints for high scale supersymmetry

violating supersymmetry (SUSY) phases different from zero, and neglect the bound coming from the electric dipole moment (EDM) of the neutron: is it possible to fully account for

Effective theories of flavor and the nonuniversal MSSM

mathrm{CP}

Cold Positrons from Decaying Dark Matter

violation in the kaon and B systems using only the SUSY contributions with a vanishing CKM phase? We show that the

SU(3) Flavour Symmetries and CP Violation

mathrm{BR}(stackrel{ensuremath{rightarrow}}{B}{X}_{s}ensuremath{gamma})

New Physics behind the Standard Model's door?

constraint, though

SUSY Flavour at LHC7

mathrm{CP}