Is the new CDF $M_W$ measurement consistent with the two higgs doublet model?

Abouabid, H.; Arhrib, A.; Benbrik, Rachid; Krab, M.; Ouchemhou, M.

doi:10.48550/arxiv.2204.12018

Cited by 7 publications

(9 citation statements)

References 29 publications

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“…( 2) and one-loop in Eq. (17). Using these three new triplet parameters, we perform the global fit and obtain m H , λ 4 and v ∆ as shown in is driven to have a too small mass, and it even becomes negative at the best fit.…”

Section: Electroweak Global Fitsmentioning

confidence: 99%

“…This is a significant indication of new physics beyond the SM (BSM). A lot of efforts have been made to provide an explanation for this tantalizing excess, such as singlet scalar model [3][4][5][6], Two-Higgs Doublet model [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25], triplet scalar model [26][27][28][29][30][31][32][33][34][35][36][37][38][39], new fermion [40][41][42][43][44][45][46][47][48][49][50][51], new gauge boson [52]…”

Section: Introductionmentioning

confidence: 99%

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Electroweak precision tests for triplet scalars

Yu¹,

He²,

Huang³

et al. 2022

Preprint

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Electroweak precision observables are fundamentally important for testing the standard model (SM) or its extensions. The influences to observables from new physics within the electroweak sector can be expressed in terms of oblique parameters S, T, U. The recently reported W mass excess anomaly by CDF modifies these parameters in a significant way. By performing the global fit with the CDF new W mass measurement data, we obtain S = 0.03 ± 0.03, T = 0.06 ± 0.02 and U = 0.16 ± 0.03 (or S = 0.14 ± 0.03, T = 0.24 ± 0.02 with U = 0) which is significantly away from zero as SM would predict. The CDF excess strongly indicates the need of new physics beyond SM. We carry out a global fit to study the influence of two different cases of simple extensions by a hyper-charge Y = 1 triplet scalar ∆ (corresponding to the type-II seesaw model) and a Y = 0 real triplet scalar Σ on electroweak precision tests to determine parameter space in these models to solve the W mass anomaly and discuss the implications. We find that these triplets can affect the oblique parameters significantly at the tree and loop levels. For Y = 1 case, there are seven new scalars in the model. The tree and scalar loop effects on oblique parameters can be expressed in terms of three parameters, the neutral CP-even mass mH , potential parameter λ4 and triplet vev v∆. Our global fit obtains mH = 296.02 ± 10.18 GeV, λ4 = 2.58 ± 0.09 and v∆ = 4.82 ± 0.34 GeV. These parameter correspondingly results in mass difference ∆m 2 = (197.49 ± 3.45GeV) 2 . Using these fit values, we further obtain m H ++ = 98.09 ± 20.02GeV, which satisfies the current LHC constraints. We also further adopt the phenomenological analysis, such as vacuum stability and perturbative unitarity, Higgs data and triple Higgs self-coupling. Furthermore, we find that the future lepton colliders can feasibly search for doubly charged H ++ via pair production H ++ H −− and decay channel to four W final states. For Y = 0 case, there are four new scalars in the model. The tree and new scalar effects on the oblique parameters can be parameterized by the singly charged mass m H + , the mass difference ∆m = m H + − m H 0 and triplet vev vΣ. Our global fit obtains m H + = 77.16 ± 17.12 GeV, ∆m = −14.27 ± 4.22 GeV and vΣ = 3.20 ± 0.30 GeV. However, these strongly violate the perturbative unitarity of the potential parameter b4, which can only be satisfied within 3σ errors.

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Section: Electroweak Global Fitsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electroweak precision tests for triplet scalars

Yu¹,

He²,

Huang³

et al. 2022

Preprint

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“…Its scalar sector contains three CP-even Higgs bosons, h 1 , h 2 and h 3 , one CP-odd Higgs boson, A, a pair of charged Higgs bosons, H ± , and a pair of double-charged Higgs bosons, H ±± . Recently, several novel physics models, including the : Two-Higgs doublet model [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20], Higgs triplet model [21][22][23][24][25], supersymmetry [26][27][28][29][30], leptoquark model [31][32][33], seesaw mechanism [34][35][36][37][38], vector-like leptons and/or vector-like quarks [39][40][41][42] and other SM extensions [43][44][45][46][47][48][49][50][51][52][53]…”

Section: Introductionmentioning

confidence: 99%

Consistency of New CDF-II W Boson Mass with 123-Model

Ait¹,

Benbrik²,

Ghourmin³

et al. 2023

Preprint

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Following the recent update measurement of the W boson mass performed by the CDF-II experiment at Fermilab which indicates 7σ deviation from the SM prediction. As a consequence, the open question is whether there are extensions of the SM that can carry such a remarkable deviation or what phenomenological repercussions this has. In this paper, we investigate what the theoretical constraints reveal about the 123-model. Also, we study the consistency of a CDF W boson mass measurement with the 123-model expectations, taking into account theoretical and experimental constraints. Both fit results of S and T parameters before and after m CDF W measurement are, moreover, considered in this study. Under these conditions, we found that the 123-model prediction is consistent with the measured m CDF W at a 95% Confidence Level (CL).

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“…In particular, it suggests that the precision electroweak parameter T [78,79] lies in the range 0.1 − 0.3, the precise value depending on the treatment of other experimental input and on the assumptions made about the combination with other precision parameters [80][81][82][83][84][85][86][87][88][89][90]. Several studies suggest that 2HDMs can accommodate these values [91][92][93][94][95][96][97][98][99].…”

Section: Introductionmentioning

confidence: 99%

Composite two-Higgs doublet model from dilaton effective field theory

Appelquist,

Ingoldby,

Piai

2022

Preprint

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We construct a composite two-Higgs-doublet model (2HDM) within the context of dilaton effective field theory. This EFT describes the particle spectrum observed in lattice simulations of a near-conformal SU (3) gauge field theory. A second Higgs doublet is naturally accommodated within the EFT, used previously to construct a one-Higgs-doublet model. We explore the interplay of phenomenological and EFT requirements, supplemented by information from numerical lattice studies of the SU (3) gauge theory with eight fundamental (Dirac) fermions. We build a viable model with moderate parameter tuning. In the relevant portion of parameter space, we match the model to a conventional general description of 2HDMs, and comment on the role of custodial symmetry (breaking) in the scalar potential. Contributions to the precision electroweak parameter T provide a possible explanation for the recent measurement of the W-boson mass by CDF II.1 We adopt Mπ = 4 TeV as an indicative reference mass scale for the PNGBs. This scale could be lowered, and the fine tuning further softened, as some experimental bounds from direct searches involve suppressed model-dependent couplings that enter certain production rates. See for instance Refs. [71,72] for useful dedicated phenomenological studies.

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Is the new CDF $M_W$ measurement consistent with the two higgs doublet model?

Cited by 7 publications

References 29 publications

Electroweak precision tests for triplet scalars

Electroweak precision tests for triplet scalars

Consistency of New CDF-II W Boson Mass with 123-Model

Composite two-Higgs doublet model from dilaton effective field theory

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