English
Related papers

Related papers: The More Relaxed Supersymmetric Electroweak Baryog…

200 papers

In this lecture first I present a brief genesis of the ideas on the electroweak baryogenesis and then I focus on a mechanism in which the source of $CP$ violation is a $CP$-violating field condensate which could occur, for example, in…

High Energy Physics - Phenomenology · Physics 2007-05-23 Tomislav Prokopec

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 realization with sizable Yukawas where the new…

High Energy Physics - Phenomenology · Physics 2020-10-14 E. Fernandez-Martinez , J. Lopez-Pavon , T. Ota , S. Rosauro-Alcaraz

Electroweak baryogenesis (EWBG) remains a theoretically attractive and experimentally testable scenario for explaining the cosmic baryon asymmetry. We review recent progress in computations of the baryon asymmetry within this framework and…

High Energy Physics - Phenomenology · Physics 2015-06-05 David E. Morrissey , Michael J. Ramsey-Musolf

We study a mechanism that generates the baryon asymmetry of the Universe during a tachyonic electroweak phase transition. We utilize as sole source of CP violation an operator that was recently obtained from the Standard Model by…

High Energy Physics - Phenomenology · Physics 2014-11-20 Anders Tranberg , Andres Hernandez , Thomas Konstandin , Michael G. Schmidt

After a short review of baryogenesis mechanisms, we focus on the charge transport mechanism at the electroweak scale, effective at strong electroweak phase transitions. Starting from the one-loop Schwinger-Dyson equations for fermions…

High Energy Physics - Phenomenology · Physics 2017-08-23 Tomislav Prokopec , Kimmo Kainulainen , Michael G. Schmidt , Steffen Weinstock

We construct two anomaly-free supersymmetric $U(1)'$ models with a secluded $U(1)'$-breaking sector. For the one with $E_6$ embedding we show that there exists a strong enough first order electroweak phase transition for electroweak…

High Energy Physics - Phenomenology · Physics 2011-04-28 Junhai Kang , Paul Langacker , Tianjun Li , Tao Liu

We present a comprehensive, self-contained pedagogical computation of the baryon asymmetry of the Universe within electroweak baryogenesis (EWBG), from the derivation of the semiclassical, CP-dependent force to the formulation and solution…

High Energy Physics - Phenomenology · Physics 2025-11-05 Giulio Barni

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

We consider the scattering of quasi-particles off the boundary created during a first order electroweak phase transition. Spatial coherence is lost due to the quasi-quark damping rate, and we show that reflection on the boundary is…

High Energy Physics - Phenomenology · Physics 2010-11-01 M. B. Gavela , P. Hernandez , J. Orloff , O. Pène , C. Quimbay

In non-supersymmetric models of electroweak baryogenesis the top quark plays a crucial role. Its CP-violating source term can be calculated in the WKB approximation. We point out how to resolve certain discrepancies between computations…

High Energy Physics - Phenomenology · Physics 2010-10-27 Lars Fromme , Stephan J. Huber

We study the flavor physics implications of baryogenesis in the Minimal Supersymmetric Standard Model. Enhanced $B-\bar B$ mixing and $b \to s \gamma$ rates are generic to all scenarios. Depending on the origin of the CP violating phase…

High Energy Physics - Phenomenology · Physics 2009-10-30 Mihir P. Worah

We study electric dipole moment bounds on CP-violating phases in the MSSM with special emphasis on the cancelation scenario. We find that in the range favored by electroweak baryogenesis ({\it i.e.,} $|\mu|\simeq M_1$ or $|\mu|\simeq M_2$),…

High Energy Physics - Phenomenology · Physics 2008-11-26 Seyed Yaser Ayazi

In this work, we make the first study of electroweak baryogenesis (EWBG) based on the LHC data in the CP-violating next-to-minimal supersymmetric model (NMSSM) where a strongly first order electroweak phase transition (EWPT) is obtained in…

High Energy Physics - Phenomenology · Physics 2018-09-26 Ligong Bian , Huai-Ke Guo , Jing Shu

In electroweak baryogenesis the baryon asymmetry of the universe is created during the electroweak phase transition. The quantum transport equations governing the dynamics of the plasma particles can be derived in the vev-insertion…

High Energy Physics - Phenomenology · Physics 2020-03-18 Marieke Postma , Jorinde van de Vis

We explore a new possibility of electroweak baryogenesis in the next-to-minimal supersymmetric standard model. In this model, a strong first-order electroweak phase transition can be achieved due to the additional singlet Higgs field. The…

High Energy Physics - Phenomenology · Physics 2015-06-03 Kingman Cheung , Tie-Jiun Hou , Jae Sik Lee , Eibun Senaha

We calculate the baryon asymmetry produced at the electroweak phase transition by quasi-degenerate third generation sfermions in the minimal supersymmetric extension of the Standard Model. We evaluate constraints from Higgs searches, from…

High Energy Physics - Phenomenology · Physics 2013-05-30 Jonathan Kozaczuk , Stefano Profumo , Michael J. Ramsey-Musolf , Carroll L. Wainwright

We show that the CKM matrix can be the source of CP violation for electroweak baryogenesis if Yukawa couplings vary at the same time as the Higgs acquires its vacuum expectation value. This offers new avenues for explaining the baryon…

High Energy Physics - Phenomenology · Physics 2017-12-06 Sebastian Bruggisser , Thomas Konstandin , Geraldine Servant

We analyze the quantum transport equations for supersymmetric electroweak baryogenesis including previously neglected bottom and tau Yukawa interactions and show that they imply the presence of a previously unrecognized dependence of the…

High Energy Physics - Phenomenology · Physics 2009-02-27 Daniel J. H. Chung , Bjorn Garbrecht , Michael J. Ramsey-Musolf , Sean Tulin

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

The mechanism of "cold electroweak baryogenesis" has been so far unpopular because its proposal has relied on the ad-hoc assumption of a period of hybrid inflation at the electroweak scale with the Higgs acting as the waterfall field. We…

High Energy Physics - Phenomenology · Physics 2015-05-28 Thomas Konstandin , Geraldine Servant