Higher order corrections to the trilinear Higgs self-couplings in the real NMSSM

Nhung, Dao Thi; Mühlleitner, Margarete; Streicher, J.; Walz, K.

doi:10.1007/jhep11(2013)181

Cited by 73 publications

(79 citation statements)

References 123 publications

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“…We have furthermore calculated the full one-loop corrections in the Feynman diagrammatic approach in a mixed DR-on-shell and in a pure on-shell renormalization scheme [46]. In the mixed DR-on-shell renormalization scheme also the one-loop corrections to the Higgs self-couplings are available [47]. CP-violating effects in the mass corrections have been considered in refs.…”

Section: Jhep05(2015)128mentioning

confidence: 99%

Two-loop contributions of the order O α t α s $$ \mathcal{O}\left({\alpha}_t{\alpha}_s\right) $$ to the masses of the Higgs bosons in the CP-violating NMSSM

Mühlleitner

Nhung

Rzehak

et al. 2015

J. High Energ. Phys.

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Abstract:We provide the two-loop corrections to the Higgs boson masses of the CPviolating NMSSM in the Feynman diagrammatic approach with vanishing external momentum at O(α t α s ). The adopted renormalization scheme is a mixture between DR and on-shell conditions. Additionally, the renormalization of the top/stop sector is provided both for the DR and the on-shell scheme. The calculation is performed in the gaugeless limit. We find that the two-loop corrections compared to the one-loop corrections are of the order of 5-10%, depending on the top/stop renormalization scheme. The theoretical error on the Higgs boson masses is reduced due to the inclusion of these higher order corrections.

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Section: Jhep05(2015)128mentioning

confidence: 99%

Two-loop contributions of the order O α t α s $$ \mathcal{O}\left({\alpha}_t{\alpha}_s\right) $$ to the masses of the Higgs bosons in the CP-violating NMSSM

Mühlleitner

Nhung

Rzehak

et al. 2015

J. High Energ. Phys.

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“…There also exists tree level diagram bb → hh, but its contribution is negligible due to the low component of b quark in proton-proton colliders, and to be consistent with the processes generated in the following Monte Carlo (MC) simulation we do not consider it here. In the SM and many new physics models, the contributions from box diagrams are dominated , and the top quark contribution is much larger than that from b quark [45][46][47][48][49][72][73][74][75][76][77][78][79][80][81][82][83][84][85][86][87]. In the MDM we checked that, the top quark contribution is still much larger than that from the b quark and top partner.…”

Section: Higgs Pair Production and Its Detection At The Hadron Collidermentioning

confidence: 99%

Higgs phenomenology in the Minimal Dilaton Model after Run I of the LHC

Cao

et al. 2014

J. High Energ. Phys.

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The Minimal Dilaton Model (MDM) extends the Standard Model (SM) by a singlet scalar, which can be viewed as a linear realization of general dilaton field. This new scalar field mixes with the SM Higgs field to form two mass eigenstates with one of them corresponding to the 125 GeV SM-like Higgs boson reported by the LHC experiments. In this work, under various theoretical and experimental constrains, we perform fits to the latest Higgs data and then investigate the phenomenology of Higgs boson in both the heavy dilaton scenario and the light dilaton scenario of the MDM. We find that: (i) if one considers the ATLAS and CMS data separately, the MDM can explain each of them well, but refer to different parameter space due to the apparent difference in the two sets of data. If one considers the combined data of the LHC and Tevatron, however, the explanation given by the MDM is not much better than the SM, and the dilaton component in the 125-GeV Higgs is less than about 20% at 2σ level.(ii) The current Higgs data have stronger constrains on the light dilaton scenario than on the heavy dilaton scenario. (iii) The heavy dilaton scenario can produce a Higgs triple self coupling much larger than the SM value, and thus a significantly enhanced Higgs pair cross section at hadron colliders. With a luminosity of 100 fb −1 (10 fb −1 ) at the 14-TeV LHC, a heavy dilaton of 400 GeV (500 GeV) can be examined. (iv) In the light dilaton scenario, the Higgs exotic branching ratio can reach 43% (60%) at 2σ (3σ) level when considering only the CMS data, which may be detected at the 14-TeV LHC with a luminosity of 300 fb −1 and the Higgs Factory.

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“…In the SM the cross section receives contributions from both box and triangle diagrams, and the large cancellation between the diagrams at threshold makes the gg → hh process particularly sensitive to new physics contributions [19][20][21][22][23][24][25][26][27][28][29][30].…”

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confidence: 99%

What’s in the loop? The anatomy of double Higgs production

2015

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Determination of Higgs self-interactions through the double Higgs production from gluon fusion is a major goal of current and future collider experiments. We point out this channel could help disentangle and resolve the nature of ultraviolet contributions to Higgs couplings to two gluons.Analytic properties of the double Higgs amplitudes near kinematic threshold are used to study features resulting from scalar and fermionic loop particles mediating the interaction. Focusing on the hh invariant mass spectrum, we consider the effect from anomalous top and bottom Yukawa couplings, as well as from scalar and fermionic loop particles. In particular, the spectrum at high hh invariant mass is sensitive to the spin of the particles in the loop.

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Higher order corrections to the trilinear Higgs self-couplings in the real NMSSM

Cited by 73 publications

References 123 publications

Two-loop contributions of the order O α t α s $$ \mathcal{O}\left({\alpha}_t{\alpha}_s\right) $$ to the masses of the Higgs bosons in the CP-violating NMSSM

Two-loop contributions of the order O α t α s $$ \mathcal{O}\left({\alpha}_t{\alpha}_s\right) $$ to the masses of the Higgs bosons in the CP-violating NMSSM

Higgs phenomenology in the Minimal Dilaton Model after Run I of the LHC

What’s in the loop? The anatomy of double Higgs production

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