Current bounds on the Type-Z $Z_3$ three Higgs doublet model

Boto, Rafael; Romão, Jorge C.; Silva, João P.

doi:10.48550/arxiv.2106.11977

Cited by 4 publications

(6 citation statements)

References 40 publications

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“…[30][31][32][33][34][35][36][37][38]. Furthermore, phenomenological studies are performed in the 3HDM with CP4 symmetry [39,40], Z 3 symmetry [41][42][43][44], Z 2 symmetries [45][46][47][48][49][50][51], Sp(6) symmetry [52], U(1)×Z 2 flavor symmetry [53], and S 3 symmetry [54]. Also, eight extra Higgs bosons are predicted in addition to the SM-like Higgs boson with the mass of 125 GeV.…”

Section: Jhep07(2022)124 1 Introductionmentioning

confidence: 99%

Anomaly-free axion dark matter in three Higgs doublet model and its phenomenological implications

Sakurai

Takahashi

2022

J. High Energ. Phys.

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We study phenomenological implications of an axion that arises as a pseudo Nambu-Goldstone boson due to the spontaneous breaking of anomaly-free global flavor symmetry. One interesting possibility for such anomaly-free axion to explain dark matter (DM) is when it has a mass of order keV and an intermediate scale decay constant, since it can be explored through direct search experiments, X-ray observations, various stellar cooling processes, and the misalignment mechanism naturally explains the DM abundance. As a concrete renormalizable model of such axion, we consider an extended Higgs sector with global flavor symmetry, which consists of three Higgs doublet fields and three singlet Higgs fields with U(1)B−L charges. We identify viable parameter regions that satisfy theoretical bounds on the Higgs potential and various experimental limits on this model, and evaluate the mass spectra of the axion and extra Higgs bosons. We find that even an anomaly-free axion can generally couple to photons through mixing with CP-odd Higgs, and that its strength depends on the vacuum expectation values of the Higgs doublets as well as the axion mass. As a result, the ratios of the vacuum expectation values of the Higgs doublets are tightly constrained to satisfy the X-ray constraints. We show the favored parameter region where axion DM explains the XENON1T excess. We also demonstrate that the axion-electron coupling is correlated with the extra Higgs boson masses and mixing angles for CP-even Higgs bosons. Thus, if the axion is detected in future observations, the extra Higgs boson masses and the coupling of the standard model-like Higgs boson with the weak gauge bosons are restricted. This is a good example of the synergy between searches for the axion DM and the BSM around the electroweak scale.

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Section: Jhep07(2022)124 1 Introductionmentioning

confidence: 99%

Anomaly-free axion dark matter in three Higgs doublet model and its phenomenological implications

Sakurai

Takahashi

2022

J. High Energ. Phys.

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“…A detailed review of the 2HDM is presented in [6], and an increasing number of works are now focussing on various aspects of 3HDMs (both theoretical and phenomenological) e.g. see [26,27], with recent studies in [28][29][30][31][32][33][34][35][36][37][38].…”

Section: Parameter Space For a Large Br(h ± → Cb) In 2hdms And 3hdmsmentioning

confidence: 99%

Slight excess at 130 GeV in search for a charged Higgs boson decaying to a charm quark and a bottom quark at the Large Hadron Collider

Akeroyd,

Moretti,

Song

2022

Preprint

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Searches for a charged Higgs boson (H ± ) decaying to a charm quark and a bottom quark (H ± → cb) have been carried out at the Large Hadron Collider (LHC) in the decay of top quarks (t → H ± b).In a recent search by the ATLAS collaboration (with all Run II data, 139 fb −1 ) a local excess of around 3σ has been observed, which is best fitted by a charged Higgs boson with a mass (m H ± ) of around 130 GeV and a product of branching ratios (BRs) given by BR(t → H ± b) × BR(H ± → cb) = 0.16% ± 0.06%. In the context of Two-Higgs-Doublet Models (2HDM) with independent Yukawa couplings for H ± we present the parameter space for which this excess (assuming it to be genuine) can be accommodated, taking into account the limits from LHC searches for H ± → cs andGeV and the constraint from b → sγ. It is then shown that such an excess cannot be explained in 2HDMs with natural flavour conservation, but can be accommodated in the flipped Three-Higgs-Doublet Model (3HDM) and in the aligned 2HDM (A2HDM). Upcoming searches with 139 fb −1 in the channels H ± → cb (CMS), H ± → cs (ATLAS/CMS) and H ± → τ ν (ATLAS/CMS) will determine if the excess is the first sign of an H ± with m H ± = 130 GeV.

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“…[30][31][32][33][34][35][36][37]. Furthermore, phenomenological studies are performed in the 3HDM with CP4 symmetry [38,39], Z 3 symmetry [40][41][42][43], Z 2 symmetries [44][45][46][47][48][49][50], Sp (6) symmetry [51], U(1)×Z 2 flavor symmetry [52], and S 3 symmetry [53]. Also, eight extra Higgs bosons are predicted in addition to the SM-like Higgs boson with the mass of 125 GeV.…”

Section: Introductionmentioning

confidence: 99%

Anomaly-free axion dark matter in three Higgs doublet model and its phenomenological implications

Sakurai,

Takahashi

2022

Preprint

View full text Add to dashboard Cite

We study phenomenological implications of an axion that arises as a pseudo Nambu-Goldstone boson due to spontaneous breaking of anomaly-free global flavor symmetry. One interesting possibility for such anomaly-free axion to explain dark matter (DM) is when it has a mass of order keV and an intermediate scale decay constant, since it can be explored through direct search experiments, X-ray observations, various stellar cooling processes, and the misalignment mechanism naturally explains the DM abundance. As a concrete renormalizable model of such axion, we consider an extended Higgs sector with global flavor symmetry, which consists of three Higgs doublet fields and three singlet Higgs fields with U (1) B−L charges. We identify viable parameter regions that satisfy theoretical bounds on the Higgs potential and various experimental limits on this model, and evaluate the mass spectra of the axion and extra Higgs bosons. We find that if the axion DM explains the XENON1T excess, the ratios of the vacuum expectation values of the Higgs doublets are tightly constrained for the case where the mass of the extra Higgs boson is below TeV. We also demonstrate that the axion-electron coupling is correlated with the extra Higgs boson masses and mixing angles for CP-even Higgs bosons. Thus, if the axion is detected in the future observations, the extra Higgs boson masses and the coupling of the standard model-like Higgs boson with the weak gauge bosons are restricted. This is a good example of the synergy between searches for the axion DM and the BSM around the electroweak scale.

show abstract

Current bounds on the Type-Z $Z_3$ three Higgs doublet model

Cited by 4 publications

References 40 publications

Anomaly-free axion dark matter in three Higgs doublet model and its phenomenological implications

Anomaly-free axion dark matter in three Higgs doublet model and its phenomenological implications

Slight excess at 130 GeV in search for a charged Higgs boson decaying to a charm quark and a bottom quark at the Large Hadron Collider

Anomaly-free axion dark matter in three Higgs doublet model and its phenomenological implications

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