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相关论文: Hadronic CP Violation in the 2HDM

200 篇论文

We compute the complete set of Higgs-mediated chargino-neutralino two-loop contributions to the electric dipole moments (EDMs) of the electron and neutron in the minimal supersymmetric standard model (MSSM). We study the dependence of these…

高能物理 - 唯象学 · 物理学 2009-01-14 Yingchuan Li , Stefano Profumo , Michael Ramsey-Musolf

CP violation in the Higgs couplings to fermions is an intriguing, but not yet extensively explored possibility. We use inclusive and differential LHC Higgs boson measurements to fit the CP structure of the Higgs Yukawa couplings. Starting…

高能物理 - 唯象学 · 物理学 2022-07-27 Henning Bahl , Elina Fuchs , Sven Heinemeyer , Judith Katzy , Marco Menen , Krisztian Peters , Matthias Saimpert , Georg Weiglein

The CP violation in $K$ and B decays are discussed with the emphasize on the precise prediction for $\epsilon'/\epsilon$ and the new physics effects from a class of models with additional Higgs doublets and fermions. The contributions from…

高能物理 - 唯象学 · 物理学 2017-08-23 Yue-Liang Wu , Yu-Feng Zhou

In this paper, we study the CP violating processes in a general two-Higgs-doublet model (2HDM) with tree-level flavor changing neutral currents. In this model, sizable Yukawa couplings involving top and charm quarks are still allowed by the…

高能物理 - 唯象学 · 物理学 2022-11-22 Syuhei Iguro , Yuji Omura

We study CP-Violation (CPV) in a Composite 2-Higgs Doublet Model (C2HDM) based on the global symmetry breaking $SO(6)/[SO(4)\times SO(2)]$, wherein the strong sector is modeled by a two-site moose structure. Non-trivial complex phases in…

高能物理 - 唯象学 · 物理学 2021-07-20 Stefania De Curtis , Stefano Moretti , Ryo Nagai , Kei Yagyu

We calculate the electric dipole moments (EDM) of the neutral Hg(199) atom, deuteron, nucleons and neutral hyperons Lambda, Sigma(0) and Xi(0) in the framework of a generic SUSY model without R-parity conservation (RPV SUSY) on the basis of…

高能物理 - 唯象学 · 物理学 2007-05-23 Amand Faessler , Thomas Gutsche , Sergey Kovalenko , Valery E. Lyubovitskij

We study the electric dipole moments(EDM) of the neutron and the electron in the two-Higgs-doublet model, in the case that $CP$ symmetry is violated maximally in the neutral Higgs sector. We take account of the Weinberg's operator…

高能物理 - 唯象学 · 物理学 2010-11-01 Takemi HAYASHI , Yoshio Koide , Masahisa Matsuda , Morimitsu Tanimoto , Seiichi Wakaizumi

Using the effective Lagrangian method, we analyze the electroweak corrections to the anomalous dipole moments of lepton from some special two-loop diagrams where a closed neutralino/chargino loop is inserted into relevant two Higgs doublet…

高能物理 - 唯象学 · 物理学 2008-11-26 Tai-Fu Feng , Lin Sun , Xiu-Yi Yang

We review the information on the CKM matrix elements, unitarity triangle and CP-violating phases $\alpha, \beta$ and $\gamma$ in the standard model which will be measured in the forthcoming experiments at B factories, HERA-B and hadron…

高能物理 - 唯象学 · 物理学 2007-05-23 A. Ali

The experimental search for CP violation in paramagnetic atomic and molecular systems has made impressive progress in recent years. This has led to strong upper limits on the electron electric dipole moment. The same measurements can also…

高能物理 - 唯象学 · 物理学 2025-10-24 Heleen Mulder , Rob Timmermans , Jordy de Vries

Vector leptoquarks can address the lepton flavor universality anomalies in decays associated with the $b \to c \ell \nu$ and $b \to s \ell \ell$ transitions, as observed in recent years. Generically, these leptoquarks yield new sources of…

高能物理 - 唯象学 · 物理学 2020-06-24 Wolfgang Altmannshofer , Stefania Gori , Hiren H. Patel , Stefano Profumo , Douglas Tuckler

I consider a general two Higgs doublet model with CP violation. I give a perturbative expansion for the mass eigenstates in terms of the small CP violating phase. I use these analytical expressions to show that $\mathcal{O}(10^{-2})$ CP…

高能物理 - 唯象学 · 物理学 2014-04-21 Seyda Ipek

We discuss the $Z_2$ symmetric two Higgs doublet model with a real soft breaking term (real 2HDM). We explain in detail why it is not tenable to assume CP conservation in the scalar sector to keep the dimension two term real, while CP is…

高能物理 - 唯象学 · 物理学 2021-07-14 Duarte Fontes , Maximilian Löschner , Jorge C. Romão , João P. Silva

We present a detailed study of the Thallium, neutron, Mercury and deuteron electric dipole moments (EDMs) in the CP-violating Minimal Supersymmetric extension of the Standard Model (MSSM). We take into account the complete set of one-loop…

高能物理 - 唯象学 · 物理学 2009-09-11 John Ellis , Jae Sik Lee , Apostolos Pilaftsis

The chromo magnetic dipole moment (CMDM) and chromo electric dipole moment (CEDM) of the top quark are calculated at the one-loop level in the framework of the two-Higgs doublet model with four fermion generations (4GTHDM), which is still…

高能物理 - 唯象学 · 物理学 2018-09-12 A. I. Hernández-Juárez , A. Moyotl , G. Tavares-Velasco

Discovering CP-violating effects in the Higgs sector would constitute an indisputable sign of physics beyond the Standard Model. We derive constraints on the CP-violating Higgs-boson couplings to top and bottom quarks as well as to tau…

高能物理 - 唯象学 · 物理学 2013-11-28 Joachim Brod , Ulrich Haisch , Jure Zupan

We revisit the generalized two-Higgs-doublet model (2HDM) with a minimally perturbed lepton specific (Type-X) Yukawa sector in context of the muon collider. The model offers a large region of parameter space where it can provide a solution…

高能物理 - 唯象学 · 物理学 2025-01-14 Nandini Das , Nivedita Ghosh

CP violating interactions are required to realize the matter abundance of our Universe. It is however known that the standard model of particle physics does not contain sufficient CP violation. The electric dipole moment (EDM) of atomic…

高能物理 - 唯象学 · 物理学 2022-11-18 Nodoka Yamanaka

At an hadronic scale the effect of CP-violating interactions that typically appear in extensions of the Standard Model may be described by an effective Lagrangian, in which the operators are expressed in terms of lepton and partonic gluon…

The supersymmetric standard model (SSM) has a CP-violating phase in its gauge-Higgs sector. This new source of CP violation induces the electric dipole moments (EDMs) of the neutron and electron at the one-loop level. The same CP-violating…

高能物理 - 唯象学 · 物理学 2009-10-30 Noriyuki Oshimo