Changing patterns in electroweak precision with new color-charged states: Oblique corrections and the $W$ boson mass

Abstract

The recent measurement by the CDF Collaboration of the $W$ boson mass is in significant tension with the Standard Model expectation, showing a discrepancy of seven standard deviations. A larger value of $m_W$ affects the global electroweak fit, particularly the best-fit values of the Peskin-Takeuchi parameters $S$, $T$ (and perhaps $U$) that measure oblique corrections from new physics. To meet this challenge, we propose some simple models capable of generating non-negative $S$ and $T$, the latter of which faces the greatest upward pressure from the CDF measurement in scenarios with $U=0$. Our models feature weak multiplets of scalars charged under $\mathrm{SU}(3{)}_{\text{c}}\times \mathrm{U}(1{)}_Y$, which cannot attain nonzero vacuum expectation values but nevertheless produce e.g. $T\ne 0$ given some other mechanism to split the electrically charged and neutral scalars. We compute the oblique corrections in these models and identify ample parameter space supporting the CDF value of $m_W$.

arXiv comment11 pages, 4 figures. Updated to resemble Phys. Rev. D Version of Record

References in corpus (59)

• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Dimension-Six Terms in the Standard Model Lagrangian
• A Supersymmetry Primer
• Generating Feynman Diagrams and Amplitudes with FeynArts 3
• Precision Electroweak Measurements on the Z Resonance
• FeynRules - Feynman rules made easy
• New Developments in FeynCalc 9.0
• FeynCalc 9.3: New features and improvements
• The global electroweak fit at NNLO and prospects for the LHC and ILC
• Significant Excess of ElectronLike Events in the MiniBooNE Short-Baseline Neutrino Experiment
• Update of the global electroweak fit and constraints on two-Higgs-doublet models
• Package-X 2.0: A Mathematica package for the analytic calculation of one-loop integrals
• Measurement of the $W$-boson mass in pp collisions at $\sqrt{s}=7$ TeV with the ATLAS detector
• Dimension-8 Operators in the Standard Model Effective Field Theory
• The SMEFTsim package, theory and tools
• Updated Status of the Global Electroweak Fit and Constraints on New Physics
• Effective Theory Analysis of Precision Electroweak Data
• Revisiting the Global Electroweak Fit of the Standard Model and Beyond with Gfitter
• Flavor Changing Neutral Currents, an Extended Scalar Sector, and the Higgs Production Rate at the LHC
• Seeking Sgluons
• Search for narrow and broad dijet resonances in proton-proton collisions at $\sqrt{s}=$ 13 TeV and constraints on dark matter mediators and other new particles
• Colored Resonant Signals at the LHC: Largest Rate and Simplest Topology
• Experimental Tests of Asymptotic Freedom
• Color-octet scalars at the LHC
• Combination of CDF and D0 W-Boson Mass Measurements
• Measurement of the W boson mass
• FeynHelpers: Connecting FeynCalc to FIRE and Package-X
• Modifications to the Properties of the Higgs Boson
• Color-Octet Scalars of N=2 Supersymmetry at the LHC
• A Global Fit to Extended Oblique Parameters
• Precision observables in SU(2) x U(1) models with an additional Higgs triplet
• A search for pair-produced resonances in four-jet final states at $\sqrt{s}$ =13 TeV with the ATLAS detector
• Color Sextet Scalars at the CERN Large Hadron Collider
• Making the small oblique parameters large
• On the $W$-mass and New Higgs Bosons
• Low energy SUSY confronted with new measurements of W-boson mass and muon g-2
• Singlet extensions and W boson mass in the light of the CDF II result
• Impact of the CDF $W$-mass anomaly on two Higgs doublet model
• A Model of Vector-like Leptons for the Muon $g-2$ and the $W$ Boson Mass
• $W$ boson mass and muon $g-2$ in a lepton portal dark matter model
• Type-II Seesaw Triplet Scalar Effects on Neutrino Trident Scattering
• Higgs physics confronts the $M_W$ anomaly
• Iso-doublet Vector Leptoquark solution to the Muon $g-2$, $R_{K,K^{\ast }}$, $R_{D,D^{\ast }}$, and $W$-mass Anomalies
• Correlating Gravitational Waves with $W$-boson Mass, FIMP Dark Matter, and Majorana Seesaw Mechanism
• Leptoquarks in Oblique Corrections and Higgs Signal Strength: Status and Prospects
• Violation of custodial symmetry from W-boson mass measurements
• LHC constraints on color octet scalars
• Color-octet scalar effects on Higgs boson production in gluon fusion
• Gluon-Photon Signatures for color octet at the LHC (and beyond)
• Electroweak Corrections from Triplet Scalars
• Oblique Lessons from the $W$ Mass Measurement at CDF II
• LHC bounds on coloured scalars
• Exploring color-octet scalar parameter space in minimal $R$-symmetric models
• Effective Theories and Electroweak Precision Constraints
• Searching for Standard Model Adjoint Scalars with Diboson Resonance Signatures
• Constraints on coloured scalars from global fits
• Color-octet scalars in Dirac gaugino models with broken $R$ symmetry
• $t\bar{t}t\bar{t}$ signatures through the lens of color-octet scalars
• New physics in triboson event topologies

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• LEX-EFT: The Light Exotics Effective Field Theory
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• An alternative gauged $U(1{)}_R$ symmetric model in light of the CDF II $W$ boson mass anomaly
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