Reconciling large<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:math>-violating phases with bounds on the electric dipole moments in the MSSM

Ayazi, Seyed Yaser; Farzan, Yasaman

doi:10.1103/physrevd.74.055008

Cited by 36 publications

(19 citation statements)

References 86 publications

(84 reference statements)

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“…In addition, the contributions from θ A 0 are enlarged by large A 0 , and the contributions from θ M 2 , θ µ are lager than θ A 0 by several orders of magnitude, hence the contributions from θ µ are hardly cancelled by θ A 0 (when the cancellation between θ µ and θ A 0 takes place, the maximum value of θ µ is O(10 −3 ), which is not sufficient for the taking place of EWB). It is different from the case in the MSSM [38], in which the maximum value of θ µ can be large enough to the taking place of EWB, when the cancellation happens between the contributions from θ µ and θ A 0 to d e . It results from that, the contributions from sleptons are highly suppressed by large slepton masses, in our chosen parameter space.…”

Section: Numerical Analysesmentioning

confidence: 68%

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Electroweak baryogenesis and electron EDM in the B-LSSM

2020

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Electroweak baryogenesis (EWB) and electric dipole moment (EDM) have close relation with the new physics beyond the standard model (SM), because the SM CP-violating (CPV) interactions are not sufficient to provide the baryon asymmetry of the universe by many orders of magnitude, and the theoretical predictions for the EDM of electron (d e ) in the SM are too tiny to be detected in near future. In this work, we explore the CPV effects on EWB and the electron EDM in the minimal supersymmetric extension (MSSM) of the SM with local B − L gauge symmetry (B-LSSM). And the two-step transition via tree-effects in this model is discussed. Including two-loop corrections to d e and considering the constrains from updated experimental data, the numerical results show that the B-LSSM can account for the observed baryon asymmetry. In addition, when the cancellation between different contributions to d e takes place, the region favored by EWB can be compatible with the corresponding EDM bound.PACS numbers:

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Section: Numerical Analysesmentioning

confidence: 68%

“…The supersymmetric effects on the EDM of electron has been explored in Refs. [28][29][30][31][32][33][34][35][36][37][38][39][40]. The results show that the most interesting possibility to suppress the electron EDM to below the corresponding experimental upper bound is, the contributions from different phases cancel each other.…”

Section: Introductionmentioning

confidence: 99%

Electroweak baryogenesis and electron EDM in the B-LSSM

2020

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“…The effects have been explored in Refs. [24][25][26][27][28][29][30][31][32]. The results show that, the most interesting possibility to suppress these EDMs to below the corresponding experimental upper bounds is, the contributions from different phases cancel each other.…”

Section: Introductionmentioning

confidence: 99%

Electric dipole moments of neutron and heavy quarks in the B-LSSM

Yang

Feng

Cui

et al. 2020

J. High Energ. Phys.

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The searching for the electric dipole moments (EDMs) of neutron (d n ), b quark (d b ) and c quark (d c ) gives strict upper bounds on these quantities. And recently, new upper bounds on d b , d c are obtained by the strict limit on d n . The models of new physics (NP) with additional CP-violating (CPV) sources are constrained strictly by these EDMs. In this work, we focus on the CPV effects on these EDMs in the minimal supersymmetric extension (MSSM) of the SM with local B −L gauge symmetry (B-LSSM). The contributions from one-loop and some two-loop diagrams to the quark EDM are given in general form, which can also be used in the calculation of quark EDM in other models of NP. Considering the constrains from updated experimental data, the numerical results show that the two-loop corrections can make important contributions to these EDMs. Compared with the MSSM, the effects of new CPV phases and new parameters in the B-LSSM on these EDMs are also explored. PACS numbers:

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“…At the same time, the non-zero phases, satisfying the EDM constraints, may be allowed, as explained in the following sections, and in some details in Refs. [82][83][84][85][86][87][88].…”

Section: Introductionmentioning

confidence: 99%

125 GeV Higgs signal at the LHC in theCP-violating MSSM

et al. 2014

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The ATLAS and CMS collaborations have observed independently at the Large Hadron Collider (LHC) a new Higgs-like particle with a mass M h ∼ 125 GeV and properties similar to that predicted by the Standard Model (SM). Although the measurements indicate that this Higgs-like boson is compatible with the SM hypothesis, however due to large uncertainties in some of the Higgs detection channels, one still has the possibility of testing this object as being a candidate for some Beyond the SM (BSM) physics scenarios, for example, the Minimal Supersymmetric Standard Model (MSSM), in the CP-conserving version (CPC-MSSM). In this paper, we evaluate the modifications of these CPC-MSSM results when CP-violating (CPV) phases are turned on explicitly, leading to the CP-violating MSSM (CPV-MSSM). We investigate the role of the CPV phases in (some of) the soft Supersymmetry (SUSY) terms on both the mass of the lightest Higgs boson h 1 , and the rates for the processesat the LHC, considering the impact of the flavor constraints as well as the constraints coming from the Electric Dipole Moment (EDM) measurements. We find that it is possible to have a Higgs mass of about 125 GeV with relatively small tan β, large A t and a light stop, which is consistent with the current SUSY particle searches at the LHC. We obtain that the imaginary part of the top and bottom Yukawa couplings can take very small but non-zero values even after satisfying the recent updates from both the ATLAS and CMS collaborations within 1-2σ uncertainties which might be an interesting signature to look for at the future run of the LHC. Our study shows that the CPV-MSSM provides an equally potential solution (like its CP-conserving (CPC) counterpart) to the recent LHC Higgs data, in fact offering very little in the way of distinction arXiv:1301.2745v3 [hep-ph] 15 Aug 2014 between these two SUSY models (CPC-MSSM and CPV-MSSM) at the 7 and 8 TeV run of the LHC. Improvement in different Higgs coupling measurements is necessary in order to test the possibility of probing the small dependence on these CPV phases in the Higgs sector of the MSSM.

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Reconciling largeCP-violating phases with bounds on the electric dipole moments in the MSSM

Cited by 36 publications

References 86 publications

Electroweak baryogenesis and electron EDM in the B-LSSM

Electroweak baryogenesis and electron EDM in the B-LSSM

Electric dipole moments of neutron and heavy quarks in the B-LSSM

125 GeV Higgs signal at the LHC in theCP-violating MSSM

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