Higgs phenomenology in the Peccei-Quinn invariant NMSSM

Choi, Kiwoon; Im, Sang Hui; Jeong, Kwang Sik; Seo, Min-Seok

doi:10.1007/jhep01(2014)072

Cited by 12 publications

(10 citation statements)

References 69 publications

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“…For given tan β, there are two ranges of θ 1 where h can describe the observed data. One is around θ 1 = 0, and the other is around θ 1 = arctan(2/ tan β) [13,14]. This is understood from the fact that the Higgs decay h → bb occurs through the effective coupling C b = c 1 c 2 − s 1 tan β, and it should be the main decay mode in order to explain the LHC results [59].…”

Section: Lhc Constraints On Higgs Mixingmentioning

confidence: 98%

“…The SUSY contribution δC g can be sizable if the stops are relatively light, and is approximately estimated as 14) for small mass splitting between the two stops [38,39]. In the presence of scalar mixing, the Higgs coupling to photons receives a contribution from the chargino loops [40], 15) JHEP11 (2014)148 assuming small mixing between the charged wino and higgsinos for simplicity.…”

Section: Sm-like Higgs Bosonmentioning

confidence: 99%

“…In particular, singlet-doublet scalar mixing can have interesting phenomenological consequences [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. It increases the mass of the SM-like Higgs boson if the singlet scalar is light, which does not require low tan β or sizable λ differently from the singlet F -term contribution.…”

Section: Introductionmentioning

confidence: 99%

“…It increases the mass of the SM-like Higgs boson if the singlet scalar is light, which does not require low tan β or sizable λ differently from the singlet F -term contribution. In addition, the singlet-doublet mixing induces a Higgs coupling to photons of either sign through the charged-higgsino loops [13,14]. In this paper we study the effects of Higgs mixing in the NMSSM where the lightest CP-even neutral scalar is singlet-like, i.e.…”

Section: Introductionmentioning

confidence: 99%

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Higgs mixing in the NMSSM and light Higgsinos

Jeong

Shoji

Yamaguchi

2014

J. High Energ. Phys.

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Abstract:We explore the effects of Higgs mixing in the general next-to-minimal supersymmetric Standard Model (NMSSM). Extended to include a gauge singlet, the Higgs sector can naturally explain the observed Higgs boson mass in TeV scale supersymmetry without invoking large stop mixing. This is particularly the case when the singlet scalar is light so that singlet-doublet mixing increases the mass of the SM-like Higgs boson. In such a case the Higgs mixing has interesting implications following from the fact that the higgsino mass parameter and the singlet coupling to Higgs bilinear crucially depend on the Higgs boson masses and mixing angles. For the mixing compatible with the current LHC data on the Higgs signal rates, the higgsinos are required to be relatively light, around or below a few hundred GeV, as long as the heavy doublet Higgs boson has a mass smaller than about 250 √ tan β GeV and the singlet-like Higgs boson is consistent with the LEP constraint. In addition, the Higgs coupling to photons can receive a sizable contribution of either sign from the charged-higgsino loops combined with singlet-doublet mixing.

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Section: Lhc Constraints On Higgs Mixingmentioning

confidence: 98%

Section: Sm-like Higgs Bosonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Higgs mixing in the NMSSM and light Higgsinos

Jeong

Shoji

Yamaguchi

2014

J. High Energ. Phys.

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“…The PQ symmetric NMSSM explains why there is so little CP violation in the strong sector by exhibiting an axion, the massless pseudoscalar a 1 . In the NMSSM with a slightly broken PQ symmetry, with small κ and A κ , the a 1 acquires a small mass proportional to κ A κ but can still solve the strong CP problem [15,[18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Natural NMSSM with a light Singlet Higgs and Singlino LSP

Potter

2016

Eur. Phys. J. C

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Supersymmetry (SUSY) is an attractive extension of the Standard Model (SM) of particle physics which solves the SM hierarchy problem. Motivated by the theoretical μ-term problem of the Minimal Supersymmetric Model (MSSM), the Next-to MSSM (NMSSM) can also account for experimental deviations from the SM like the anomalous muon magnetic moment and the dark matter relic density. Natural SUSY, motivated by naturalness considerations, exhibits small fine tuning and a characteristic phenomenology with light higgsinos, stops, and gluinos. We describe a scan in NMSSM parameter space motivated by Natural SUSY and guided by the phenomenology of an NMSSM with a slightly broken Peccei-Quinn symmetry and a lightly coupled singlet. We identify a scenario which survives experimental constraints with a light singlet Higgs and a singlino lightest SUSY particle. We then discuss how the scenario is not presently excluded by searches at the Large Hadron Collider (LHC) and which channels are promising for discovery at the LHC and International Linear Collider.

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Discovery prospects of a light scalar in the NMSSM

Ellwanger

Rodríguez-Vázquez

2016

J. High Energ. Phys.

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We study a region in the NMSSM parameter space in which the mass of the SM-like Higgs boson is uplifted by ∼ 4 − 17 GeV, allowing for stop masses and |A t | ≤ 1 TeV alleviating the little fine tuning problem of the MSSM. An uplift of the mass of the SM-like Higgs boson is possible in two distinct regions in the NMSSM parameter space: Either for large λ and small tan β or, through singlet-doublet mixing, for small λ and large tan β. For a mostly singlet-like Higgs state H S with a mass below 125 GeV we investigate possible direct or indirect search channels at the run II of the LHC as function of the NMSSM-specific uplift of the mass of the SM-like Higgs boson: Direct production of H S in gluon fusion with H S decaying into diphotons, modified reduced couplings of the SM-like Higgs state, and the possible production of H S in ggF → A → Z + H S . We find that the region featuring singlet-doublet mixing can be tested if searches at the LHC at 13 TeV for BSM Higgs bosons in the mass range 88 − 102 GeV decaying into diphotons become sensitive to signal cross sections σ(gg → H S → γγ) ∼ 20 fb, or if measurements of the reduced coupling κ V (H SM ) of the SM Higgs boson to electroweak gauge boson exclude (or confirm) the region κ V (H SM ) < ∼ 0.93.

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Higgs phenomenology in the Peccei-Quinn invariant NMSSM

Cited by 12 publications

References 69 publications

Higgs mixing in the NMSSM and light Higgsinos

Higgs mixing in the NMSSM and light Higgsinos

Natural NMSSM with a light Singlet Higgs and Singlino LSP

Discovery prospects of a light scalar in the NMSSM

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