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Electric dipole moments are extremely sensitive probes for additional sources of CP violation in new physics models. The multi-scale problem of relating the high-precision measurements with neutrons, atoms and molecules to fundamental…

High Energy Physics - Phenomenology · Physics 2015-09-17 Martin Jung

We investigate the effects of the spontaneous CP violation at finite temperature in the Minimal Supersymmetric Standard Model on the baryogenesis at the weak scale. After a brief discussion of the case in which the electroweak phase…

High Energy Physics - Phenomenology · Physics 2010-03-17 D. Comelli , M. Pietroni , A. Riotto

Spontaneous CP--violation in the minimal supersymmetric standard model with a gauge singlet and a cubic superpotential is examined. Although the tree--level Higgs potential conserves CP, it is shown that with the inclusion of the one--loop…

High Energy Physics - Phenomenology · Physics 2009-12-30 K. S. Babu , S. M. Barr

By assuming a dynamical source of CP violation, the tension between sufficient CP violation for successful electroweak baryogenesis and strong constraints from current electric dipole moment measurements could be alleviated. We study how to…

High Energy Physics - Phenomenology · Physics 2018-07-11 Fa Peng Huang , Zhuoni Qian , Mengchao Zhang

CP violation in supersymmetry can give rise to rate asymmetries in the decays of supersymmetric particles. In this work we compute the rate asymmetries for the three-body chargino decays \tilde\chi^\pm_2 \to \tilde\chi^\pm_1 HH,…

High Energy Physics - Phenomenology · Physics 2009-12-07 Makiko Nagashima , Ken Kiers , Alejandro Szynkman , David London , Jenna Hanchey , Kevin Little

The neutral leptonic sector of the Standard Model presumably consists of three neutrinos with non-zero Majorana masses with properties further determined by three mixing angles and three CP-violating phases. We derive the general…

High Energy Physics - Phenomenology · Physics 2014-11-17 J. A. Casas , J. R. Espinosa , A. Ibarra , I. Navarro

We investigate the role of CP phases within the renormalizable SUSY SO(10) GUT with one 10_H, one 126bar_H one 126_H and one 210_H Higgs representations and type II seesaw dominating the neutrino mass matrix. This framework is non trivially…

High Energy Physics - Phenomenology · Physics 2009-11-11 Stefano Bertolini , Michal Malinsky

We study the phenomenological implications of the Higgs sector CP violation at a photon collider. In our model, the CP violation is radiatively induced by the non-trivial CP phases of the third-generation scalar-quark sector in the MSSM. We…

High Energy Physics - Phenomenology · Physics 2007-05-23 Jae Sik Lee

The strong CP problem can be solved in Parity symmetric theories with electroweak gauge group containing $SU(2)_L \times SU(2)_R$ broken by the minimal Higgs content. Neutrino masses may be explained by adding the same number of gauge…

High Energy Physics - Phenomenology · Physics 2023-11-20 Lawrence J. Hall , Keisuke Harigaya , Yogev Shpilman

We discuss the prospects for observing CP violation in the MSSM with six CP-violating phases, using a geometric approach to maximise CP-violating observables subject to the experimental upper bounds on electric dipole moments. We consider…

High Energy Physics - Phenomenology · Physics 2016-11-17 A. Arbey , J. Ellis , R. M. Godbole , F. Mahmoudi

Three possibilities for the origin of CP violation are discussed: (1) the Standard Model in which all CP violation is due to one parameter in the CKM matrix, (2) the superweak model in which all CP violation is due to new physics and (3)…

High Energy Physics - Phenomenology · Physics 2009-10-31 Lincoln Wolfenstein

CP violation induced by resonant transitions of a scalar to a pseudoscalar intermediate state is analyzed within a gauge-invariant resummation approach based on the pinch technique. Necessary conditions governing the resonant enhancement of…

High Energy Physics - Phenomenology · Physics 2007-05-23 Apostolos Pilaftsis

The possibility of observing CP violation in the decays of Higgs particles into top-quark, W- and Z-boson pairs induced by heavy Majorana neutrinos is discussed. In the context of minimal "see-saw" models with interfamily mixings, we find…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Ilakovac , B. A. Kniehl , A. Pilaftsis

We study pair annihilations of the neutralino dark matter in the minimal supersymmetric standard model with CP violation. We consider the case that the higgsino mass and the trilinear scalar couplings have CP-violating phases of order…

High Energy Physics - Phenomenology · Physics 2009-11-11 Takeshi Nihei

We explore CP violating aspects in the Higgs sector of models where new vectorlike quarks carry Yukawa couplings mainly to the third generation quarks of the Standard Model. We point out that in the simplest model, Higgs CP violating…

High Energy Physics - Phenomenology · Physics 2015-10-28 Chien-Yi Chen , S. Dawson , Yue Zhang

We study resonant CP violation in the Higgsstrahlung process e^+e^- -> H_{1,2,3} (Z -> e^+e^-, \mu^+\mu^-) and subsequent decays H_{1,2,3} -> b \bar{b}, \tau^-\tau^+, in the MSSM with Higgs-sector CP violation induced by radiative…

High Energy Physics - Phenomenology · Physics 2009-09-11 John Ellis , Jae Sik Lee , Apostolos Pilaftsis

We use the recently derived CP phase dependent analytic results for the supersymmetric electro-weak correction to $g_{\mu}-2$ to constrain the explicit CP phases in softly broken supersymmetry using the new physics effect seen in the g-2…

High Energy Physics - Phenomenology · Physics 2014-11-17 Tarek Ibrahim , Utpal Chattopadhyay , Pran Nath

One of the Sakharov's condition for baryogenesis is the violation of both C and CP. In the Standard Model, gauge interactions break maximally C, but CP is only broken through the Yukawa couplings in the poorly understood scalar sector. In…

High Energy Physics - Phenomenology · Physics 2015-06-19 Jean-Marie Frère , Maxim Libanov , Simon Mollet

First-order phase transitions, which take place when the symmetries are predominantly broken (and masses are then generated) through radiative corrections, produce observable gravitational waves and primordial black holes. We provide a…

High Energy Physics - Phenomenology · Physics 2024-03-25 Alberto Salvio

We study electroweak baryogenesis and electric dipole moments in the presence of the two leading-order, non-renormalizable operators in the Higgs sector of the MSSM. Significant qualitative and quantitative differences from MSSM…

High Energy Physics - Phenomenology · Physics 2015-03-13 Kfir Blum , Cedric Delaunay , Marta Losada , Yosef Nir , Sean Tulin
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