SMEFT analysis of mW

Bagnaschi, Emanuele; Ellis, John; Madigan, Maeve; Mimasu, Ken; Sanz, Verónica; You, Tevong

doi:10.1007/jhep08(2022)308

Cited by 46 publications

(9 citation statements)

References 69 publications

(102 reference statements)

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“…[31]. This study precedes the latest CDF W -mass measurement, and we refer interested readers to our recent dedicated study of the impact of this measurement in Ref [93].…”

Section: Input Experimental Data In Fitmaker Analysismentioning

confidence: 87%

LHC EFT WG Report: Experimental Measurements and Observables

Castro¹,

Cranmer²,

Gritsan³

et al. 2022

Preprint

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The LHC effective field theory working group gathers members of the LHC experiments and the theory community to provide a framework for the interpretation of LHC data in the context of EFT. In this note we discuss experimental observables and corresponding measurements in analysis of the Higgs, top, and electroweak data at the LHC. We review the relationship between operators and measurements relevant for the interpretation of experimental data in the context of a global SMEFT analysis. One of the goals of ongoing effort is bridging the gap between theory and experimental communities working on EFT, and in particular concerning optimised analyses. This note serves as a guide to experimental measurements and observables leading to EFT fits and establishes good practice, but does not present authoritative guidelines how those measurements should be performed.

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“…[31]. This study precedes the latest CDF W -mass measurement, and we refer interested readers to our recent dedicated study of the impact of this measurement in Ref [93].…”

Section: Input Experimental Data In Fitmaker Analysismentioning

confidence: 87%

LHC EFT WG Report: Experimental Measurements and Observables

Castro¹,

Cranmer²,

Gritsan³

et al. 2022

Preprint

View full text Add to dashboard Cite

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“…The U is usually fixed to zero because it is suppressed by an additional factor M 2 new /m 2 Z , which is typically small for heavy new physics. The W mass deviation is also interpreted in terms of these oblique parameters in many following analyses [39][40][41][42][43], which point out that a larger T parameter is preferred. In this section, we will discuss the contribution to the S and T parameters from the new physics in our model.…”

Section: W and Electroweak Precision Testsmentioning

confidence: 99%

“…The CDF W mass and the constraint on the scale f Many analyses on the oblique parameters based on the new M W measured by the CDF collaboration have been conducted [39][40][41][42][43]. We follow the S − T contour derived in [43].…”

Section: 3mentioning

confidence: 99%

“…However, the W boson measurement by the CDF collaboration [38] implies that instead of fine protection, we might need to break it. It was pointed out in many following analyses [39][40][41][42][43] that an additional contribution on the T parameter is required. Several attempts to address the W mass anomaly together with neutral current B anomalies based on Z solution have been studied [44][45][46].…”

Section: Introductionmentioning

confidence: 99%

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Explaining the $R_{K^{(*)}}$ anomalies and the CDF $M_W$ in Flavorful Top Seesaw Models with Gauged $U(1)_{L(-R)}$

Chung¹

2022

Preprint

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A new heavy Z vector boson provides a possible explanation for the neutral current B anomalies and points to the scale where we expect the solution to the hierarchy problem to appear. In this paper, we explore a modified Top Seesaw model based on the global symmetry breaking of U (3) L to U (2) L . The symmetry is partially gauged such that the breaking introduces not only a composite Higgs doublet but also a TeV-scale Z boson. The U (3) L /U (2) L Top Seesaw model predicts a light Higgs boson as well as a large top Yukawa coupling. Additional U (1) symmetry is gauged such that a flavorful TeV-scale Z boson is introduced to address the B anomalies. The existence of a heavy vector-like top quark and Z − Z mixing breaks the custodial symmetry, which predicts a heavier W mass as observed by the CDF collaboration. Two possible candidates for the U (1) symmetry corresponding to the Z boson, U (1) L and U (1) L−R , are discussed in detail. The parameter space for the models to address both anomalies is presented. The direct searches of the Z boson from dilepton channels are also studied. Based on the assumptions, a TeV-scale Z boson is still viable and can be probed in the near future.

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“…This study is motivated, in part, by recent the measurement of the W boson's mass at the CDF experiment [41]. With high significance, the collaboration reports a mass larger than predicted by precision EW data, but also one that fits naturally in the Type II Seesaw [42][43][44][45][46][47]. Subsequently, the measurement is reigniting interest in searches for doubly and singly charged scalars at the LHC [48][49][50][51].…”

Section: Jhep10(2022)200mentioning

confidence: 99%

Doubly charged Higgs boson production at hadron colliders II: a Zee-Babu case study

Ruiz

2022

J. High Energ. Phys.

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Motivated by searches for so-called leptonic scalars at the LHC and the recent measurement of the W boson’s mass at the Tevatron, we revisit the phenomenology of the Zee-Babu model for neutrino masses and the ability to differentiate it from the Type II Seesaw model at the LHC. We conclude that this task is much more difficult than previously believed. All inputs equal in the two scenarios, we find that total and differential rates for producing pairs of doubly and singly charged scalars are identical in shape and only differ in normalization. The normalization is given by the ratio of hadronic cross sections and can be unity. Differences in cross sections are small and can be hidden by unknown branching rates. This holds for Drell-Yan, γγ fusion, and gg fusion, as well as observables at LO and NLO in QCD. This likeness allows us to reinterpret Run II limits on the Type II Seesaw and estimate projections for the HL-LHC. Using updated neutrino oscillation data, we also find that some collider observables, e.g., lepton flavor-violating branching ratios, are now sufficiently precise to provide a path forward. Other means of discrimination are also discussed. As a byproduct of this work, we report the availability of new Universal FeynRules Object libraries, the SM_ZeeBabu UFO, that enable fully differential simulations up to NLO+LL(PS) with tool chains employing MadGraph5_aMC@NLO.

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SMEFT analysis of mW

Cited by 46 publications

References 69 publications

LHC EFT WG Report: Experimental Measurements and Observables

LHC EFT WG Report: Experimental Measurements and Observables

Explaining the $R_{K^{(*)}}$ anomalies and the CDF $M_W$ in Flavorful Top Seesaw Models with Gauged $U(1)_{L(-R)}$

Doubly charged Higgs boson production at hadron colliders II: a Zee-Babu case study

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