Approaching robust EFT limits for 
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 violation in the Higgs sector

Englert, Christoph; Galler, Peter; Pilkington, A. D.; Spannowsky, Michael

doi:10.1103/physrevd.99.095007

Cited by 28 publications

(20 citation statements)

References 75 publications

(96 reference statements)

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“…We note that linear EFT interference effects due to CPodd operators remain CP-odd, while squared CP-odd terms become CP-even and thus are difficult to disentangle from their CP-even counterparts [99]. For this reason, it is interesting to study CP-odd operators in processes for which the linear EFT terms are dominant, such as the high energy bins of differential distributions, or by looking at specific observables such as asymmetries.…”

Section: Amplitudes and Cross-sectionsmentioning

confidence: 99%

“…For this reason, it is interesting to study CP-odd operators in processes for which the linear EFT terms are dominant, such as the high energy bins of differential distributions, or by looking at specific observables such as asymmetries. Separating the impact of CP-even and CP-odd operators has been studied mostly in the context of EFT analysis of the Higgs sector [78,[99][100][101][102].…”

Section: Amplitudes and Cross-sectionsmentioning

confidence: 99%

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SMEFT analysis of vector boson scattering and diboson data from the LHC Run II

et al. 2021

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We present a systematic interpretation of vector boson scattering (VBS) and diboson measurements from the LHC in the framework of the dimension-six standard model effective field theory (SMEFT). We consider all available measurements of VBS fiducial cross-sections and differential distributions from ATLAS and CMS, in most cases based on the full Run II luminosity, and use them to constrain 16 independent directions in the dimension-six EFT parameter space. Compared to the diboson measurements, we find that VBS provides complementary information on several of the operators relevant for the description of the electroweak sector. We also quantify the ultimate EFT reach of VBS measurements via dedicated projections for the high luminosity LHC. Our results motivate the integration of VBS processes in future global SMEFT interpretations of particle physics data.

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Section: Amplitudes and Cross-sectionsmentioning

confidence: 99%

Section: Amplitudes and Cross-sectionsmentioning

confidence: 99%

SMEFT analysis of vector boson scattering and diboson data from the LHC Run II

et al. 2021

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“…Machine Learning (ML) may also play a useful role in further scrutinizing the CP nature of the Higgs-τ interaction [42,43]. In addition, CP analyses of the t-Higgs coupling have been proposed, including ML [44][45][46]. ] all prod., priv.…”

Section: Jhep05(2020)056mentioning

confidence: 99%

C P violation from τ , t and b dimension-6 Yukawa couplings — interplay of baryogenesis, EDM and Higgs physics

Fuchs

Losada

Nir

et al. 2020

J. High Energ. Phys.

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We explore the implications of the Standard Model effective field theory (SMEFT) with dimension-six terms involving the Higgs boson and third-generation fermion fields on the rate of Higgs boson production and decay into fermions, on the electric dipole moments (EDMs) of the electron, and on the baryon asymmetry of the Universe. We study the consequences of allowing these additional terms for each flavor separately and for combinations of two flavors. We find that a complex τ Yukawa coupling can account for the observed baryon asymmetry Y obs B within current LHC and EDM bounds. A complex b (t) Yukawa coupling can account for 4% (2%) of Y obs B , whereas a combination of the two can reach 12%. Combining τ with either t or b enlarges the viable parameter space owing to cancellations in the EDM and in either Higgs production times decay or the total Higgs width, respectively. Interestingly, in such a scenario there exists a region in parameter space where the SMEFT contributions to the electron EDM cancel and collider signal strengths are precisely SM-like, while producing sufficient baryon asymmetry. Measuring CP violation in Higgs decays to τ leptons is the smoking gun for this scenario.

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“…can be independently, precisely measured at the LHC [39][40][41][42][43], so the model dependence from this part is little. This is another advantage of this process.…”

Section: The Phenomenology Of the Bottomquark Yukawa Interactionmentioning

confidence: 99%

Investigating Bottom-Quark Yukawa Interaction at Higgs Factory

Bi,

Chai,

Gao

et al. 2020

Preprint

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Measuring the fermion Yukawa coupling constants is important for understanding the origin of the fermion masses and its relationship to the spontaneously electroweak symmetry breaking. On the other hand, some new physics models will change the Lorentz structure of the Yukawa interactions between the standard model (SM) fermions and the SM-like Higgs boson even in their decoupling limit. Thus the precisely measurement of the fermion Yukawa interactions is a powerful tool of new physics searching in the decoupling limit. In this work, we show the possibility of investigating the Lorentz structure of the bottom-quark Yukawa interaction with the 125GeV SM-like Higgs boson at future e + e − colliders.

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Approaching robust EFT limits for CP violation in the Higgs sector

Cited by 28 publications

References 75 publications

SMEFT analysis of vector boson scattering and diboson data from the LHC Run II

SMEFT analysis of vector boson scattering and diboson data from the LHC Run II

C P violation from τ , t and b dimension-6 Yukawa couplings — interplay of baryogenesis, EDM and Higgs physics

Investigating Bottom-Quark Yukawa Interaction at Higgs Factory

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