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Related papers: CP violation in loop-induced diboson production

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In these proceedings, we present results for Higgs production at the LHC via gluon fusion with triple real emission corrections and the validity range of the heavy-top effective theory approximation for this process. For a general…

High Energy Physics - Phenomenology · Physics 2014-10-15 Francisco Campanario , Michael Kubocz

We study the phenomenological consequences of several $CP$-violating structures that could arise in the Standard Model effective field theory framework. Focusing on operators involving electroweak gauge and/or Higgs bosons, we derive…

High Energy Physics - Phenomenology · Physics 2017-10-16 Felipe Ferreira , Benjamin Fuks , Veronica Sanz , Dipan Sengupta

We consider a general two-Higgs-doublet model with CP violation in the scalar sector, that leads, at the one-loop level of the perturbation expansion, to CP-violation in the process $e^+e^- \to t\bar{t} \to l^\pm ...$ and $e^+e^- \to…

High Energy Physics - Phenomenology · Physics 2014-11-17 B. Grzadkowski , J. Pliszka

CP-violation in the Higgs sector remains a possible source of the baryon asymmetry of the universe. Recent differential measurements of signed angular distributions in Higgs boson production provide a general experimental probe of the CP…

We study the pair-production of charginos in the CP-violating Minimal Supersymmetric Standard Model at center-of-mass energies around the heavy neutral Higgs boson resonances. If these resonances are nearly degenerate, as it can happen in…

High Energy Physics - Phenomenology · Physics 2009-01-06 Olaf Kittel , Federico von der Pahlen

We study effects of CP violation in an associated production of a charged Higgs boson and a top quark at the LHC: $pp \to tH^\pm +X$. We calculate the CP violating asymmetry between the total cross section for $H^+$ and $H^-$ production at…

High Energy Physics - Phenomenology · Physics 2008-12-19 Ekaterina Christova , Helmut Eberl , Elena Ginina

We study CP-violating phenomena in the production, mixing and decay of a coupled system of CP-violating neutral Higgs bosons at \gamma \gamma colliders, assuming a Minimal Supersymmetric Standard Model (MSSM) Higgs sector in which CP…

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

A critical element of the LHC physics program is the search for an additional source of CP violation. This is largely unexplored in the context of non-linear Higgs physics, which is naturally described in Higgs Effective Field Theory…

High Energy Physics - Phenomenology · Physics 2024-07-23 Akanksha Bhardwaj , Christoph Englert , Dorival Gonçalves , Alberto Navarro

We study effects of CP violation in the associated production of a charged Higgs boson and a top quark at the LHC, $pp \to tH^\pm + X$. We calculate the CP violating asymmetry between the total cross section for $H^+$ and $H^-$ production…

High Energy Physics - Phenomenology · Physics 2009-10-29 E. Christova , H. Eberl , E. Ginina , W. Majerotto

Gluon fusion is the main production mechanism for Higgs bosons with masses up to several hundred GeV in $pp$ collisions at the CERN Large Hadron Collider. We investigate the effects of the CP-violating phases on the fusion process including…

High Energy Physics - Phenomenology · Physics 2014-11-17 S. Y. Choi , Jae Sik Lee

The Higgs-gluon interaction is crucial for LHC phenomenology. To improve the constraints on the CP structure of this coupling, we investigate Higgs production with two jets using machine learning. In particular, we exploit the CP…

High Energy Physics - Phenomenology · Physics 2025-03-31 Henning Bahl , Elina Fuchs , Marc Hannig , Marco Menen

We study CP violation in fermion pair decays of Higgs boson. We idenfy some CP odd observables related to the tree level decay amplitude. We find that a few thousand Higgs boson decay events can already provide important information about…

High Energy Physics - Phenomenology · Physics 2010-11-01 Xiao-Gang He , J. P. Ma , Bruce McKellar

We study the effect of explicit CP violation in the Higgs sectors of the MSSM in the di-photon decay of the lightest CP-mixed Higgs state. Further it is shown that the gluon fusion production mechanism along with the di-photon decay…

High Energy Physics - Phenomenology · Physics 2015-05-27 S. Hesselbach , S. Moretti , S. Munir , P. Poulose

We discuss CP violation in top-antitop production at the LHC, induced by gluon fusion and final-state Higgs exchange. Results by Bernreuther and Brandenburg are confirmed and further reduced. The lepton energy asymmetry is studied in detail…

High Energy Physics - Phenomenology · Physics 2015-06-25 Wafaa Khater , Per Osland

We review the production of scalar Higgs-like particles in high-energy electron-electron collisions, via the fusion of electroweak gauge bosons. The emphasis is on how to distinguish a CP-even from a CP-odd Higgs particle. Among the more…

High Energy Physics - Phenomenology · Physics 2014-11-17 C. A. Boe , O. M. Ogreid , P. Osland , Jian-zu Zhang

In high energy hadronic collisions, a general CP-violating Higgs boson $\Phi$ with accompanying jets can be efficiently produced via gluon fusion, which is mediated by heavy quark loops. In this letter we study the dominant sub-channel $ gg…

High Energy Physics - Phenomenology · Physics 2015-06-18 Francisco Campanario , Michael Kubocz

Spontaneous CP violation motivates the introduction of two Higgs doublets in the electroweak theory. Such a simple extension of the standard model has three neutral Higgs bosons and a pair charged Higgs, especially it leads to rich…

High Energy Physics - Phenomenology · Physics 2015-03-17 Shou-Shan Bao , Yong Tang , Yue-Liang Wu

I present a study estimating the amount of CP violation present in the production of charged Higgs bosons due to the presence of complex trilinear scalar couplings. I compare the results of my study with previous results for the decay. I…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. A. Williams

The CP-violating effects to the subprocess $gg\to H^+H^-$ is studied in the mSUGRA scenario at the CERN LHC, by taking into account the experimental bounds of electron and neutron EDM's. The CP violation effects in this process are related…

High Energy Physics - Phenomenology · Physics 2007-05-23 Yi Jiang , Wen-Gan Ma , Liang Han , Hong-Sheng Hou

We present the general formalism for studying CP-violating phenomena in the production,mixing and decay of a coupled system of CP-violating neutral Higgs bosons at high-energy colliders. Considering the Minimal Supersymmetric Standard Model…

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