Comprehensive study of the light charged Higgs boson in the type-I two-Higgs-doublet model

Cheung, Kingman; Jueid, Adil; Kim, Jinheung; Lee, Soojin; Lu, Chih-Ting; Song, Jeonghyeon

doi:10.48550/arxiv.2201.06890

Cited by 6 publications

(7 citation statements)

References 78 publications

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“…Thus, H, A and H ± are allowed to have broad mass ranges. There are some recent studies on the status of type-I and type-II 2HDMs confronted with the direct searches at the LHC, see, e.g., [106,107,108,109,110,111,112,113,114,115,116]. Flipping the sign of λ 5 , A will be the DM candidate.…”

Section: Searches For Additional Scalars At Lhcmentioning

confidence: 99%

Two-Higgs-doublet models in light of current experiments: a brief review

Wang,

Yang,

Zhang

2022

Preprint

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We briefly survey several typical CP-conserving two-Higgs-doublet models (2HDMs) in light of current experiments. First we derive the masses and couplings of the mass eigenstates from the Lagrangians. Then we analyze the constraints from theory and oblique electroweak parameters. Finally, we delineate the status of 2HDM in light of the LHC searches, the dark matter detections and the muon g − 2 measurement.

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Section: Searches For Additional Scalars At Lhcmentioning

confidence: 99%

Two-Higgs-doublet models in light of current experiments: a brief review

Wang,

Yang,

Zhang

2022

Preprint

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“…cos(β − α) ≈ 1 with m H 0 = 125 GeV. Studies of the case where H ± → h 0 W * and/or H ± → A 0 W * have a sizeable (or even dominant) BR can be found in [19,20,[47][48][49][50][51][52][53][54]. We assume that these decays are negligible/absent, and this is achieved by i) taking m A 0 > m H ± in both the normal and inverted scenarios and ii) in the inverted scenario by having a small mass splitting m H ± −m h 0 which would suppress H ± → h 0 W * .…”

Section: The Branching Ratios Of H ±mentioning

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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“…For example, in a CP-conserving 2HDM with Type-I Yukawa couplings in the exact Higgs alignment limit, the Yukawa coupling of h 1 coincides with that of the SM, whereas the Yukawa couplings of all other scalar states (both neutral and charged) are proportional to a common factor of 1/ tan β. That is, the couplings of the charged Higgs boson to fermions are suppressed at large tan β > ∼ 10, in which case a charged Higgs mass of the order of 100 GeV [71][72][73] is still allowed. Indeed, other constraints on the parameter space, such as those derived from pp → A → Zh i searches are also weakened if tan β is large.…”

Section: Allowed Mass Range For Non-sm Higgs States Of the 2hdmmentioning

confidence: 99%

P-even, CP-violating Signals in Scalar-Mediated Processes

Haber,

Keus,

Santos

2022

Preprint

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Most studies of Higgs sector CP violation focus on the detection of CP-violating neutral Higgs-fermion Yukawa couplings, which yield P-odd, CP-violating phenomena. There is some literature on purely bosonic signatures of Higgs sector CP violation, where the simultaneous observation of three processes (suitably chosen) constitutes a signal of P-even CP violation. However, in the examples previously analyzed, some of the processes are strongly suppressed in the approximate Higgs alignment limit (corresponding to the existence of a Standard Model like Higgs boson as suggested by LHC data), in which case the proposed CP-violating signals are difficult to observe in practice. In this paper, we extend the existing literature by examining processes that do not vanish in the Higgs alignment limit and whose simultaneous observation would provide unambiguous evidence for scalar-mediated P-even CP violation. We assess the discovery potential of such signals at various future multi-TeV lepton (and γγ) colliders. The potential for detecting loop-induced P-even, CP-violating phenomena is also considered.

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Comprehensive study of the light charged Higgs boson in the type-I two-Higgs-doublet model

Cited by 6 publications

References 78 publications

Two-Higgs-doublet models in light of current experiments: a brief review

Two-Higgs-doublet models in light of current experiments: a brief review

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

P-even, CP-violating Signals in Scalar-Mediated Processes

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