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Related papers: Future Collider Perspectives on Higgs CP Violation

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We consider spontaneous CP violation in the Next to Minimal Supersymmetric Standard Model, without the usual $Z_3$ discrete symmetry. CP violation can occur at tree level, raising a potential conflict with the experimental bounds on the…

High Energy Physics - Phenomenology · Physics 2014-11-17 A. T. Davies , C. D. Froggatt , A. Usai

The violation of charge conjugation (C) and parity (P) symmetries are a requirement for the observed dominance of matter over antimatter in the Universe. As an established effect of beyond the Standard Model physics, this could point…

High Energy Physics - Phenomenology · Physics 2023-01-04 Noah Clarke Hall , Isaac Criddle , Archie Crossland , Christoph Englert , Patrick Forbes , Robert Hankache , Andrew D. Pilkington

We analyze the Tevatron and Large Hadron Collider (LHC) reach for the Higgs sector of the Minimal Supersymmetric Standard Model (MSSM) in the presence of explicit CP-violation. Using the most recent studies from the Tevatron and LHC…

High Energy Physics - Phenomenology · Physics 2011-05-12 Patrick Draper , Tao Liu , Carlos E. M. Wagner

CP violation beyond the Standard Model (SM) is a crucial missing piece for explaining the observed matter-antimatter symmetry in the Universe. Recently, the ATLAS experiment at the Large Hadron Collider has performed an analysis of…

High Energy Physics - Phenomenology · Physics 2021-03-24 Supratim Das Bakshi , Joydeep Chakrabortty , Christoph Englert , Michael Spannowsky , Panagiotis Stylianou

We consider the prospects for measuring distinctive signatures of the CP-violating phases in the minimal supersymmetric extension of the Standard Model (MSSM) in light of the limits on sparticle masses from searches at the LHC. We use the…

High Energy Physics - Phenomenology · Physics 2020-07-07 A. Arbey , J. Ellis , F. Mahmoudi

We demonstrate how probes of CP-violating observables in Higgs di-tau decays at prospective future lepton colliders could provide a test of weak scale baryogenesis with significant discovery potential. Measurements at the Circular Electron…

High Energy Physics - Phenomenology · Physics 2021-06-02 Shao-Feng Ge , Gang Li , Pedro Pasquini , Michael J. Ramsey-Musolf

We propose a simple model of dark matter and CP violation and consider the associated triple and quadruple productions of 125 GeV Higgs bosons at the Large Hadron Collider (LHC). In the model, the dark matter is a vector-like dark fermion…

High Energy Physics - Phenomenology · Physics 2022-04-29 Ting-Kuo Chen , Cheng-Wei Chiang , Ian Low

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…

High Energy Physics - Phenomenology · Physics 2013-11-28 Joachim Brod , Ulrich Haisch , Jure Zupan

We discuss the physics opportunities and detector challenges at future hadron colliders. As guidelines for energies and luminosities we use the proposed luminosity and/or energy upgrade of the LHC (SLHC), and the Fermilab design of a Very…

High Energy Physics - Phenomenology · Physics 2014-11-17 U. Baur , R. Brock , J. Parsons , M. Albrow , D. Denisov , T. Han , A. Kotwal , F. Olness , J. Qian , S. Belyaev

We present an overview of CP violation in the Standard Model and Beyond, describing various possible sources of CP violation and how to search for them.

High Energy Physics - Phenomenology · Physics 2007-05-23 G. C. Branco

We explore the prospects for observing CP violation in the minimal supersymmetric extension of the Standard Model (MSSM) with six CP-violating parameters, three gaugino mass phases and three phases in trilinear soft supersymmetry-breaking…

High Energy Physics - Phenomenology · Physics 2015-03-03 A. Arbey , J. Ellis , R. M. Godbole , F. Mahmoudi

We present results of an investigation to study CP violation in the Higgs sector in $t\bar t$ production at a $\gamma\gamma$-collider, via the process $ \gamgam \ra \phi \ra t \bar t$ where the $\phi$ is a scalar with indeterminate CP…

High Energy Physics - Phenomenology · Physics 2007-05-23 Rohini M. Godbole

We investigate direct and indirect constraints on the complete set of anomalous CP-violating Higgs couplings to quarks and gluons originating from dimension-6 operators, by studying their signatures at the LHC and in electric dipole moments…

High Energy Physics - Phenomenology · Physics 2016-02-09 Y. -T. Chien , V. Cirigliano , W. Dekens , J. de Vries , E. Mereghetti

In a class of new physics models, an extended Higgs sector and new CP-violating sources are simultaneously present in order to explain the baryon asymmetry in the Universe. The aim of this work is to study the implications of beyond the…

High Energy Physics - Phenomenology · Physics 2017-11-15 Ligong Bian , Ning Chen , Yongchao Zhang

The completion of the Standard Model of particle physics by the discovery of a light Higgs boson at the LHC in 2012 triggered the debate about the best way forward to discover physics beyond the Standard Model. At the eve of the update of…

Accelerator Physics · Physics 2022-09-21 Roman Pöschl

We describe some of the extensions of the SM, including models with spontaneous CP violation, where New Physics relevant for CP violation may arise. It is emphasized that the SM predicts a series of exact relations among various measurable…

High Energy Physics - Phenomenology · Physics 2007-05-23 Gustavo C. Branco

At a future Linear Collider one will be able to determine the masses of charginos and neutralinos and their pair production cross sections to high accuracies. We show how systematically including the cross sections into the analysis…

High Energy Physics - Phenomenology · Physics 2008-11-26 V. Barger , T. Han , T. Li , T. Plehn

I review CP-violating signals of physics beyond the standard model in the B system. I examine the prospects for finding these effects at future colliders, with an emphasis on hadron machines.

High Energy Physics - Phenomenology · Physics 2009-11-10 David London

It is found that CP symmetry may be explicitly broken in the Higgs sector of a supersymmetric $E_6$ model with two extra neutral gauge bosons at the one-loop level. The phenomenology of the model, the Higgs sector in particular, is studied…

High Energy Physics - Phenomenology · Physics 2010-04-15 S. W. Ham , J. O. Im , E. J. Yoo , S. K. OH

Run 1 of the LHC has provided three new motivations for supersymmetry: the need to stabilize the electroweak vacuum, the mass of the Higgs boson, and the fact that its couplings are Standard Model-like (so far). The prospects for…

High Energy Physics - Phenomenology · Physics 2015-10-22 John Ellis