Higgs boson mass constraint and the<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>even-<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>odd Higgs boson mixing in an MSSM extension

Ibrahim, Tarek; Nath, Pran; Zorik, Anas

doi:10.1103/physrevd.94.035029

Cited by 3 publications

(3 citation statements)

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“…This was done with inclusion of CP violating phases in the Higgs sector. An analysis of the effects of CP phases on the Higgs boson masses and mixings with inclusion of the vector like generation was given in [44] and we utilize the work of that analysis here. (For previous work on the effects of CP phases on Higgs boson massess and mixings see [45,46,47,48,49,50,51,52,53,54]).…”

Section: The Model and Notationmentioning

confidence: 99%

“…Here s β = sin β, c β = cos β, M Z is the Z-boson mass, and M A is the mass of the CP odd Higgs before mixing. As mentioned in section 2 a detailed analysis of ∆ ij is given in [44] including a vectorlike quark generation and we utilize the results of [44] in the computation of the Higgs mass eigenstates and mixings in the analysis given in this work.…”

Section: (0)mentioning

confidence: 99%

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Flavor violating top decays and flavor violating quark decays of the Higgs boson

Ibrahim

Itani

Nath

et al. 2017

Int. J. Mod. Phys. A

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In the standard model flavor violating decays of the top quark and of the Higgs boson are highly suppressed. Further, the flavor violating decays of the top and of the Higgs are also small in MSSM and not observable in current or in near future experiment. In this work we show that much larger branching ratios for these decays can be achieved in an extended MSSM model with an additional vector like quark generation. Specifically we show that in the extended model one can achieve branching ratios for t → h 0 c and t → h 0 u as large as the current experimental upper limits given by the ATLAS and the CMS Collaborations. We also analyze the flavor violating quark decay of the Higgs boson, i.e., h 0 → bs +bs and h 0 → bd +bd. Here again one finds that the branching ratio for these decays can be as large as O(1)%. The analysis is done with inclusion of the CP phases in the Higgs sector, and the effect of CP phases on the branching ratios is investigated. Specifically the Higgs sector spectrum and mixings are computed involving quarks and mirror quarks, squarks and mirror squarks in the loops consistent with the Higgs boson mass constraint. The resulting effective Lagrangian with inclusion of the vector like quark generation induce flavor violating decays at the tree level. The test of the branching ratios predicted could come with further data from LHC13 and such branching ratios could also be accessible at future colliders such as the Higgs factories where the Higgs couplings to fermions will be determined with greater precision.

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Section: The Model and Notationmentioning

confidence: 99%

Section: (0)mentioning

confidence: 99%

Flavor violating top decays and flavor violating quark decays of the Higgs boson

Ibrahim

Itani

Nath

et al. 2017

Int. J. Mod. Phys. A

Self Cite

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“…[86,87]. We also seek to answer 1 For recent work on CP-violation in the MSSM and other MSSM extensions see [24,25]. 2 Especially, when one considers the motivations for supersymmetry: radiative electroweak symmetry breaking leading to a light SM-like Higgs, dark matter, solution of the gauge hierarchy problem, gauge coupling unification in Grand Unified Theories (GUTs), and string theory.…”

Section: Jhep11(2017)051mentioning

confidence: 99%

Electroweak baryogenesis in the $$ {\mathbb{Z}}_3 $$-invariant NMSSM

Akula

Balázs

Dunn

et al. 2017

J. High Energ. Phys.

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Abstract:We calculate the baryon asymmetry of the Universe in the Z 3 -invariant Nextto-Minimal Supersymmetric Standard Model where the interactions of the singlino provide the necessary source of charge and parity violation. Using the closed time path formalism, we derive and solve transport equations for the cases where the singlet acquires a vacuum expectation value (VEV) before and during the electroweak phase transition. We perform a detailed scan to show how the baryon asymmetry varies throughout the relevant parameter space. Our results show that the case where the singlet acquires a VEV during the electroweak phase transition typically generates a larger baryon asymmetry, although we expect that the case where the singlet acquires a VEV first is far more common for any model in which parameters unify at a high scale. Finally, we examine the dependence of the baryon asymmetry on the three-body interactions involving gauge singlets.

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