Baryogenesis of the universe in cSMCS model plus iso-doublet vector quark

Darvishi, Neda

doi:10.1007/jhep11(2016)065

Cited by 11 publications

(9 citation statements)

References 46 publications

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“…The potential is symmetric under a χ → χ * transformation. We impose a global U (1) symmetry to reduce the number of parameters in the potential [12][13][14][15].…”

Section: A Potentialmentioning

confidence: 99%

“…V is also explicitly CP conserving. We shall call the model with this choice of parameters, cSMCS [12][13][14].…”

Section: A Potentialmentioning

confidence: 99%

“…Here, we study the production of the Higgs bosons of the cSMCS (the extension of SM with a neutral complex singlet) (h 1 , h 2 , h 3 ) at the LHC, using k t -factorization framework. As it have been shown in [12][13][14][15][16], the cSMCS model contains three neutral Higgs particles which the lightest is the h 1 =125 GeV Higgs boson found at the LHC and the other two Higgs scalars, h i , i = 2, 3 are taken to have masses…”

Section: Introductionmentioning

confidence: 99%

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A phenomenological study on the production of Higgs bosons in the cSMCS model at the LHC

Darvishi

Masouminia

2017

Nuclear Physics B

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In the present work, we intend to predict the production rates of the Higgs bosons in the simplest extension of the Standard Model (SM) by a neutral complex singlet (cSMCS). This model has an additional source of CP violation and provides strong enough first-order electroweak phase transition to generate the baryon asymmetry of universe (BAU). The scalar spectrum of the cSMCS includes three neutral Higgs particles with the lightest one considered to be the 125 GeV Higgs boson found at LHC. The SM-like Higgs boson comes mostly from the SM-like SU(2) doublet, with a small correction from the singlet. To predict the production rates of the Higgs bosons, we use a conventional effective LO QCD framework and the unintegrated parton distribution functions (UPDF) of Kimber-Martin-Ryskin (KMR). We first compute the SM Higgs production cross-section and compare the results to the existing theoretical calculations from different frameworks as well as the experimental data from the CMS and ATLAS collaborations. It is shown that our framework is capable of producing sound predictions for these high-energy QCD events in the SM. Afterwards we present our predictions for the Higgs boson production in the cSMCS.

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“…The potential is symmetric under a χ → χ * transformation. We impose a global U (1) symmetry to reduce the number of parameters in the potential [12][13][14][15].…”

Section: A Potentialmentioning

confidence: 99%

“…V is also explicitly CP conserving. We shall call the model with this choice of parameters, cSMCS [12][13][14].…”

Section: A Potentialmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A phenomenological study on the production of Higgs bosons in the cSMCS model at the LHC

Darvishi

Masouminia

2017

Nuclear Physics B

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“…It is known that a Standard Model with a complex singlet can provide a strong enough first-order phase transition [44] and enough CP violation if an iso-doublet vector quark is added to the model, since in this case the Yukawa Lagrangian acquires additional terms, which depend on the CPviolating phases. More studies are needed to establish whenever it is also possible to have a stable DM particle at the same time, in agreement with all experimental constraints.…”

Section: Strong 1st Order Phase Transition Cp Violation and Bariogenmentioning

confidence: 99%

IDM and not only

Ilnicka¹,

Krawczyk²,

Robens³

et al. 2017

Proceedings of Corfu Summer Institute 2016 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2016)

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“…3 , b 1 , c 1 , c 2 , d 1 , d 3 are generally complex, and the term linear in the S field has been removed without loss of generality. While in most complex singlet scalar extended Standard Model studies, extra symmetries are often imposed to simplify the potential or to have a DM candidate[1,[7][8][9][21][22][23][24], we keep the potential as general as possible without imposing further symmetries in this work. The DM will arise out of the vector-like fermion (VLF) χ, which we will discuss later.…”

mentioning

confidence: 99%

A Simple Model of Dark Matter and CP Violation

Chen,

Chiang,

Low

2022

Preprint

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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 ( χ, χ) interacting with the Standard Model only through a complex messenger scalar S which is an electroweak singlet. New sources of CP violation reside in the most general scalar potential involving the doublet H and the singlet S, as well as in the dark Yukawa coupling between S and ( χ, χ). We study current experimental constraints from Higgs measurements, searches for new scalars at the LHC, precision electroweak measurements, EDM measurements, dark matter relic density, as well as direct and indirect detections of dark matter. A smoking-gun signature of CP violation could come from the Higgs-to-Higgs decays, h 3 → h 2 h 1 , where h 3 /h 2 /h 1 are the heaviest scalar, second heaviest scalar and the SM-like 125-GeV Higgs, respectively. Taking into account other Higgs-to-Higgs decays, such as h 3 → 2h 2 and h 3 /h 2 → 2h 1 , then gives rise to novel 3h 1 and 4h 1 final states, which have yet to be searched for experimentally. We present four benchmarks and show the event rates for 3h 1 and 4h 1 final states could be as large as O(10) fb and O(1) fb, respectively, at the 14-TeV LHC. This work opens up a new frontier of searching for triple and quadruple Higgs bosons at a high energy collider.

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Baryogenesis of the universe in cSMCS model plus iso-doublet vector quark

Cited by 11 publications

References 46 publications

A phenomenological study on the production of Higgs bosons in the cSMCS model at the LHC

A phenomenological study on the production of Higgs bosons in the cSMCS model at the LHC

IDM and not only

A Simple Model of Dark Matter and CP Violation

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