Specific supersimple properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>e</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:mo stretchy="false">→</mml:mo><mml:mi>γ</mml:mi><mml:mi>H</mml:mi></mml:math>at high energy

Gounaris, G. J.; Renard, F.M.

doi:10.1103/physrevd.91.093002

Cited by 5 publications

(6 citation statements)

References 40 publications

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“…[94][95][96]. There are also some works on this process in many new physics models, for example, the MSSM [96][97][98][99], extended scalar sector models [100,101], VLQ models [102], effective field theory framework [103][104][105][106], and simplified scenarios [107]. Besides, we can also probe the FCNY couplings through direct production processes pp → Tth; Tt; ThW; Thj.…”

Section: Numerical Results and Constraint Prospectsmentioning

confidence: 99%

Higgs boson to γZ decay as a probe of flavor-changing neutral Yukawa couplings

2020

Phys. Rev. D

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With the deeper study of Higgs particle, Higgs precision measurements can be served to probe new physics indirectly. In many new physics models, vectorlike quarks T L , T R occur naturally. It is important to probe their couplings with standard model particles. In this work, we consider the singlet T L , T R extended models and show how to constrain the Tth couplings through the h → γZ decay at high-luminosity LHC. First, we derive the perturbative unitarity bounds on jy tT L;R j with other couplings set to be zeros simply. To optimize the situation, we take m T ¼ 400 GeV and s L ¼ 0.2 considering the experimental constraints. Under this benchmark point, we find that the future bounds from h → γZ decay can limit the real parts of y tT L;R in the positive direction to be O(1) because of the double enhancement. For the real parts of y tT L;R in the negative direction, it is always surpassed by the perturbative unitarity. Moreover, we find that the top quark electric dipole moment can give stronger bounds (especially the imaginary parts of y tT L;R) than the perturbative unitarity and h → γZ decay in the off-axis regions for some scenarios.

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Section: Numerical Results and Constraint Prospectsmentioning

confidence: 99%

Higgs boson to γZ decay as a probe of flavor-changing neutral Yukawa couplings

2020

Phys. Rev. D

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“…On the other hand, new physics effects on the process have not been fully explored yet. There are several studies in the literature in the context of anomalous Higgsboson couplings or an effective field theory [10][11][12][13][14][15] as well as concrete new physics models such as supersymmetric models [7,[16][17][18] and the inert doublet model (IDM) [19].…”

Section: Introductionmentioning

confidence: 99%

Single Higgs production in association with a photon at electron-positron colliders in extended Higgs models

2019

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We study associated Higgs production with a photon at electron-positron colliders, e + e − → hγ, in various extended Higgs models, such as the inert doublet model (IDM), the inert triplet model (ITM) and the two Higgs doublet model (THDM). The cross section in the standard model (SM) is maximal around √ s = 250 GeV, and we present how and how much the new physics can enhance or reduce the production rate. We also discuss the correlation with the h → γγ and h → Zγ decay rates. We find that, with a sizable coupling to a SMlike Higgs boson, charged scalars can give considerable contributions to both the production and the decay if their masses are around 100 GeV. Under the theoretical constraints from vacuum stability and perturbative unitarity as well as the current constraints from the Higgs measurements at the LHC, the production rate can be enhanced from the SM prediction at most by a factor of two in the IDM. In the ITM, in addition, we find a particular parameter region where the hγ production significantly increases by a factor of about six to eight, but the h → γγ decay still remains as in the SM. In the THDM, possible deviations from the SM prediction are minor in the viable parameter space.

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“…[67,68] "supersimple" expressions have been derived for the processes e + e − → h Z, hγ in the rMSSM. We successfully reproduced Fig.…”

Section: Comparisonsmentioning

confidence: 99%

“…Lower row loop-induced differential cross sections (in ab) are shown with parameters chosen according to S1 of Ref. [68] tan β = 50 . Therefore our σ tree correspond rather to their σ and our σ full rather to their σ FDC .…”

Section: Comparisonsmentioning

confidence: 99%

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Neutral Higgs boson production at $$e^+e^-$$ e + e - colliders in the complex MSSM: a full one-loop analysis

Heinemeyer¹,

Schappacher²

2016

Eur. Phys. J. C

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For the search for additional Higgs bosons in the Minimal Supersymmetric Standard Model (MSSM) as well as for future precision analyses in the Higgs sector precise knowledge of their production properties is mandatory. We evaluate the cross sections for the neutral Higgs boson production at e + e − colliders in the MSSM with complex parameters (cMSSM). The evaluation is based on a full one-loop calculation of the production mechanism e + e − → h i Z , h i γ, h i h j (i, j = 1, 2, 3), including soft and hard QED radiation. The dependence of the Higgs boson production cross sections on the relevant cMSSM parameters is analyzed numerically. We find sizable contributions to many cross sections. They are, depending on the production channel, roughly of 10-20 % of the tree-level results, but can go up to 50 % or higher. The full one-loop contributions are important for a future linear e + e − collider such as the ILC or CLIC. There are plans to implement the evaluation of the Higgs boson production cross sections into the code FeynHiggs.

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Specific supersimple properties ofe−e+→γHat high energy

Cited by 5 publications

References 40 publications

Higgs boson to γZ decay as a probe of flavor-changing neutral Yukawa couplings

Higgs boson to γZ decay as a probe of flavor-changing neutral Yukawa couplings

Single Higgs production in association with a photon at electron-positron colliders in extended Higgs models

Neutral Higgs boson production at $$e^+e^-$$ e + e - colliders in the complex MSSM: a full one-loop analysis

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