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Related papers: Spontaneous Baryogenesis with Observable CP Violat…

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We study gravity wave production and baryogenesis at the electroweak phase transition, in a real singlet scalar extension of the Standard Model, including vector-like top partners to generate the CP violation needed for electroweak…

High Energy Physics - Phenomenology · Physics 2021-06-16 James M. Cline , Avi Friedlander , Dong-Ming He , Kimmo Kainulainen , Benoit Laurent , David Tucker-Smith

We study the possibilities of spontaneous CP violation in the Next-to-Minimal Supersymmetric Standard Model with an extra singlet tadpole term in the scalar potential. We calculate the Higgs boson masses and couplings with radiative…

High Energy Physics - Phenomenology · Physics 2009-11-10 Cyril Hugonie , Jorge C. Romao , Ana M. Teixeira

We address the question of whether the CP violating phase in the CKM mixing matrix can be the only source of all CP violation. We show that in supersymmetric models with new flavour structure beyond the Yukawa matrices, the CKM phase can…

High Energy Physics - Phenomenology · Physics 2015-06-25 Shaaban Khalil , Veronica Sanz

We show that in the Minimal Supersymmetric Standard Model one--loop effects at finite temperature may lead to a spontaneous breaking of CP invariance in the scalar sector. Requiring that the breaking takes place at the critical temperature…

High Energy Physics - Phenomenology · Physics 2010-11-01 D. Comelli , M. Pietroni

Some past, present, and future aspects of CP violation are reviewed. The discrete symmetries C, P, and T are introduced with an example drawn from Maxwell's Equations. The history of the discovery of CP violation in the kaon system is…

High Energy Physics - Phenomenology · Physics 2009-10-31 Jonathan L. Rosner

A talk was given on the baryon asymmetry of our universe within the electroweak energy scale which was the theme for the 23rd INS Symposium. It was intended for non-experts by a non-expert speaker. A model is analized explicitly in which…

High Energy Physics - Phenomenology · Physics 2007-05-23 Akio Sugamoto

We analyze the nMSSM with CP violation in the singlet sector. We study the static and dynamical properties of the electroweak phase transition. We conclude that electroweak baryogenesis in this model is generic in the sense that if the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Stephan J. Huber , Thomas Konstandin , Tomislav Prokopec , Michael G. Schmidt

CP violation in the K system is pedagogically reviewed. We discuss its manifestations in the neutral K meson systems, in rare K meson decays and in decays of charged K mesons. Results from classical experiments, and perspectives for…

High Energy Physics - Experiment · Physics 2015-06-25 Juliet Lee-Franzini , Paolo Franzini

The relation between leptogenesis and CP violation at low energies is analyzed in detail in the framework of the minimal seesaw mechanism. Working, without loss of generality, in a weak basis where both the charged lepton and the…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. C. Branco , R. Gonzalez Felipe , F. R. Joaquim , I. Masina , M. N. Rebelo , C. A. Savoy

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

We investigate the connection between R-parity violation (RPV) in supersymmetric models and Baryogenesis. First we discuss in detail the assumptions of a theorem by Nanopoulos and Weinberg on the CP asymmetry generated from the decay of…

High Energy Physics - Phenomenology · Physics 2014-08-08 Fabrizio Rompineve

Non-leptonic B_s decays into CP eigenstates that are caused by \bar b -> \bar cc\bar s quark-level transitions, such as B_s -> D_s^+D^-_s, J/psi eta^(') or J/psi phi, provide a powerful tool to search for ``new physics'', as the…

High Energy Physics - Phenomenology · Physics 2011-03-23 Patricia Ball , Robert Fleischer

Assuming the seesaw and leptogenesis mechanisms, I give some general remarks on possible connection or disconnection between CP violation in heavy Majorana neutrino decays and that in neutrino oscillations. A simple but predictive ansatz is…

High Energy Physics - Phenomenology · Physics 2009-11-07 Zhi-zhong Xing

We initiate a study of cosmological implications of sphaleron-mediated CP-violation arising from the electroweak vacuum angle under the reasonable assumption that the semiclassical suppression is lifted at finite temperature. In this…

High Energy Physics - Phenomenology · Physics 2015-08-26 Andrew J. Long , Hiren H. Patel , Mark Trodden

We point out that, in a class of SO(10) models with matter fields in 16 and 10 representations and type II realization of the seesaw mechanism, the light neutrino masses and the CP asymmetry needed for leptogenesis are controlled by one and…

High Energy Physics - Phenomenology · Physics 2008-11-26 Michele Frigerio , Pierre Hosteins , Stephane Lavignac , Andrea Romanino

Although CP violation was discovered more than thirty years ago, its origin is still unknown. In these lectures, we describe the CP-violating effects which have been seen in K decays, and explain how CP violation can be caused by the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Boris Kayser

We explore the generation of the baryon asymmetry in an extension of the Standard Model where the lepton number is promoted to a $U(1)_\ell$ gauge symmetry with an associated $Z^\prime$ gauge boson. This is based on a novel electroweak…

High Energy Physics - Phenomenology · Physics 2020-03-18 Marcela Carena , Mariano Quirós , Yue Zhang

We investigate if the CP violation necessary for successful electroweak baryogenesis may be sourced by the neutrino Yukawa couplings. In particular, we consider an electroweak scale Seesaw realisation with sizeable Yukawas where the new…

High Energy Physics - Phenomenology · Physics 2021-05-05 S. Rosauro-Alcaraz

A scenario is suggested for spontaneous CP violation in non-SUSY and SUSY- SO(10). The idea is to have a scalar potential which generates spontaneously a phase, at the high scale, in the VEV that gives a mass to the RH neutrinos. As a…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yoav Achiman

We propose a new mechanism to generate a lepton asymmetry based on the vacuum CP-violating phase transition (CPPT). This approach differs from classical thermal leptogenesis as a specific seesaw model, and its UV completion, need not be…

High Energy Physics - Phenomenology · Physics 2018-03-14 Silvia Pascoli , Jessica Turner , Ye-Ling Zhou
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