The W boson mass weighs in on the non-standard Higgs

Cacciapaglia, Giacomo; Sannino, Francesco

doi:10.48550/arxiv.2204.04514

Cited by 3 publications

(3 citation statements)

References 30 publications

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“…We show that a scalar leptoquark model can satisfy both of these criteria and provide a simultaneous explanation of both muon g − 2 and the W mass anomalies. We anticipate other possibilities, including composite models with non-standard Higgs bosons [89].…”

Section: Scalar Leptoquark Modelmentioning

confidence: 99%

Hadronic Uncertainties versus New Physics for the $W$ boson Mass and Muon $g-2$ Anomalies

Athron¹,

Fowlie²,

Lu³

et al. 2022

Preprint

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There are now two single measurements of precision observables that have major anomalies in the Standard Model: the recent CDF measurement of the W mass shows a 7σ deviation and the Muon g − 2 experiment at FNAL confirmed a long-standing anomaly, implying a 4.2σ deviation. Doubts regarding new physics interpretations of these anomalies could stem from uncertainties in the common hadronic contributions. We demonstrate that the two anomalies pull the hadronic contributions in opposite directions by performing electroweak fits in which the hadronic contribution was allowed to float. The fits show that including the g − 2 measurement worsens the tension with the CDF measurement and conversely that adjustments that alleviate the CDF tension worsen the g − 2 tension beyond 5σ. This means that if we adopt the CDF W mass measurement, the case for new physics in either the W mass or muon g − 2 is inescapable regardless of the size of the SM hadronic contributions. Lastly, we demonstrate that a mixed scalar leptoquark extension of the Standard Model could explain both anomalies simultaneously.1 This prediction is based on results from Refs. .

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Section: Scalar Leptoquark Modelmentioning

confidence: 99%

Hadronic Uncertainties versus New Physics for the $W$ boson Mass and Muon $g-2$ Anomalies

Athron¹,

Fowlie²,

Lu³

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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“…as examples), Standard Model Effective Theory (SMEFT) implications [90][91][92][93], as well as evaluations of various theoretical uncertainties [94][95][96][97][98]. Previously, there are also direct measurements at the LHC 7 TeV from the ATLAS collaboration with M W = 80, 370 ± 7 stat ± 18 syst MeV [99], at the LHC 13 TeV from the LHCb collaboration with M W = 80, 354 ± 23 stat ± 22 syst MeV [100], and ealier from Tevatron [101] and LEP [102]. While there are discussions concerning disagreements between the new CDF measurement and previous ones, in this study we only focus on the impact of the parton distributions (PDFs) on the extracted W boson mass.…”

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confidence: 99%

Understanding PDF uncertainty on the $W$ boson mass measurements in CT18 global analysis

Gao¹,

Liu²,

Xie³

2022

Preprint

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We study the dependence of the transverse mass distribution of the charged lepton and the missing energies on the parton distributions (PDFs) adapted to the W boson mass measurements at the CDF and ATLAS experiments. We compare the shape variations of the distribution induced by different PDFs and find that spread of predictions from different PDF sets can be much larger than the PDF uncertainty predicted by a specific PDF set. We suggest analyzing the experimental data using up-to-date PDFs for a better understanding of the PDF uncertainties in the W boson mass measurements. We further carry out a series of Lagrange multiplier scans to identify the constraints on the transverse mass distribution imposed by individual data sets in the CT18 global analysis. In the case of CDF measurement, the distribution is mostly sensitive to the d-quark PDFs at the intermediate x region that is largely constrained by the DIS and Drell-Yan data on the deuteron target, as well as the Tevatron lepton charge asymmetry data.

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The W boson mass weighs in on the non-standard Higgs

Cited by 3 publications

References 30 publications

Hadronic Uncertainties versus New Physics for the $W$ boson Mass and Muon $g-2$ Anomalies

Hadronic Uncertainties versus New Physics for the $W$ boson Mass and Muon $g-2$ Anomalies

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

Understanding PDF uncertainty on the $W$ boson mass measurements in CT18 global analysis

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