Neutralino exchange corrections to the Higgs boson mixings with explicit<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>CP</mml:mi></mml:math>violation

Ibrahim, Tarek; Nath, Pran

doi:10.1103/physrevd.66.015005

Cited by 73 publications

(44 citation statements)

References 100 publications

(31 reference statements)

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“…The Higgs sector of the MSSM is affected at the one-loop level by the trilinear phase [4,[10][11][12][13][14][15][16][17] and at the two-loop level by the gaugino mass phase [12][13][14][15]. This loop-induced CP violation mixes the CP-even Higgses h, H with the CP-odd Higgs boson A.…”

Section: Introductionmentioning

confidence: 99%

CERN LHC signatures of resonantCPviolation in a minimal supersymmetric Higgs sector

2004

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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 (MSSM) Higgs sector in which CP violation is radiatively induced by phases in the soft supersymmetry-breaking third-generation trilinear squark couplings and gaugino masses, we apply our formalism to neutral Higgs production viabb, gg and W + W − collisions at the LHC. We discuss CP asymmetries in the longitudinal and transverse polarizations of τ + τ − pairs.

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Section: Introductionmentioning

confidence: 99%

CERN LHC signatures of resonantCPviolation in a minimal supersymmetric Higgs sector

2004

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“…In the complex MSSM, 1-loop corrections from the fermion/sfermion sector and some leading logarithmic corrections from the gaugino sector and the dominant 2-loop results have been calculated in the renormalisation group improved effective potential approach [41,60,62,97,100,104,[106][107][108]. In the Feynman-diagrammatic approach, leading 1-loop contributions have been obtained in Ref.…”

Section: Loop Corrections To the Higgs Masses And Higgs Mixing Matricesmentioning

confidence: 99%

Higher-order corrections to Higgs boson decays in the MSSM with complex parameters

Williams¹,

2011

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We discuss Higgs boson decays in the CP-violating MSSM, and examine their phenomenological impact using cross section limits from the LEP Higgs searches. This includes a discussion of the full 1-loop results for the partial decay widths of neutral Higgs bosons into lighter neutral Higgs bosons (h a → h b h c ) and of neutral Higgs bosons into fermions (h a → ff ). In calculating the genuine vertex corrections, we take into account the full spectrum of supersymmetric particles and all complex phases of the supersymmetric parameters. These genuine vertex corrections are supplemented with Higgs propagator corrections incorporating the full one-loop and the dominant two-loop contributions, and we illustrate a method of consistently treating diagrams involving mixing with Goldstone and Z bosons. In particular, the genuine vertex corrections to the process h a → h b h c are found to be very large and, where this process is kinematically allowed, can have a significant effect on the regions of the CPX benchmark scenario which can be excluded by the results of the Higgs searches at LEP. However, there remains an unexcluded region of CPX parameter space at a lightest neutral Higgs boson mass of ∼ 45 GeV. In the analysis, we pay particular attention to the conversion between parameters defined in different renormalisation schemes and are therefore able to make a comparison to the results found using renormalisation group improved/effective potential calculations. *

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“…One of the important phenomenon in MSSM is the observation that the CP even-CP odd Higgs bosons can mix in the presence of an explicit CP violation [1,2,3,4,5,6,7,8,9,10,11,12,13]. Such mixings give rise to effects which are observable at colliders.…”

Section: Introductionmentioning

confidence: 99%

Higgs boson mass constraint and theCPeven-CPodd Higgs boson mixing in an MSSM extension

Ibrahim¹,

Nath²,

Zorik³

2016

Phys. Rev. D

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One loop contributions to the CP even-CP odd Higgs boson mixings arising from contributions due to exchange of a vectorlike multiplet are computed under the Higgs boson mass constraint. The vectorlike multiplet consists of a fourth generation of quarks and a mirror generation. This sector brings in new CP phases which can be large consistent with EDM constraints. In this work we compute the contributions from the exchange of quarks and mirror quarks t 4L , t 4R , T L , T R , and their scalar partners, the squarks and the mirror squarks. The effect of their contributions to the Higgs boson masses and mixings are computed and analyzed. The possibility of measuring the effects of mixing of CP even and CP odd Higgs in experiment is discussed. It is shown that the branching ratios of the Higgs bosons into fermion pairs are sensitive to new physics and specifically to CP phases.

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Neutralino exchange corrections to the Higgs boson mixings with explicitCPviolation

Cited by 73 publications

References 100 publications

CERN LHC signatures of resonantCPviolation in a minimal supersymmetric Higgs sector

CERN LHC signatures of resonantCPviolation in a minimal supersymmetric Higgs sector

Higher-order corrections to Higgs boson decays in the MSSM with complex parameters

Higgs boson mass constraint and theCPeven-CPodd Higgs boson mixing in an MSSM extension

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