Current and future constraints on Higgs couplings in the nonlinear Effective Theory

Blas, Jorge de; Eberhardt, Otto; Krause, Claudius

doi:10.1007/jhep07(2018)048

Cited by 88 publications

(107 citation statements)

References 116 publications

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“…This is a conservative choice, as the EWET is the most general electroweak EFT, also allowing for (but not restricted to) a strongly-coupled UV completion. This is further supported by the current knowledge about the the Higgs couplings, which have still rather large experimental uncertainties of at best O(10%) [28]. 3 The systematics of the construction is analogous to [1,26].…”

Section: The Low-energy Effective Theory 21 Constructing the Effectimentioning

confidence: 70%

Colorful imprints of heavy states in the electroweak effective theory

Krause

Pich

Rosell

et al. 2019

J. High Energ. Phys.

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We analyze heavy states from generic ultraviolet completions of the Standard Model in a model-independent way and investigate their implications on the low-energy couplings of the electroweak effective theory. We build a general effective Lagrangian, implementing the electroweak symmetry breaking SU (2) L ⊗ SU (2) R → SU (2) L+R with a non-linear Nambu-Goldstone realization, which couples the known particles to the heavy states. We generalize the formalism developed in previous works [1,2] to include colored resonances, both of bosonic and fermionic type. We study bosonic heavy states with J P = 0 ± and J P = 1 ± , in singlet or triplet SU (2) L+R representations and in singlet or octet representations of SU (3) C , and fermionic resonances with J = 1 2 that are electroweak doublets and QCD triplets or singlets. Integrating out the heavy scales, we determine the complete pattern of low-energy couplings at the lowest non-trivial order. Some specific types of (strongly-and weakly-coupled) ultraviolet completions are discussed to illustrate the generality of our approach and to make contact with current experimental searches.

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Section: The Low-energy Effective Theory 21 Constructing the Effectimentioning

confidence: 70%

Colorful imprints of heavy states in the electroweak effective theory

Krause

Pich

Rosell

et al. 2019

J. High Energ. Phys.

Self Cite

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“…The effects of operators within an Effective Field Theory (EFT) description of Higgs boson pair production have been studied at LO QCD in Refs. [21,[53][54][55][56][57][58] and at NLO in the m t → ∞ limit in Refs. [59][60][61], including also CP-violating operators [62].…”

Section: Introductionmentioning

confidence: 99%

Exploring anomalous couplings in Higgs boson pair production through shape analysis

Capozi

Heinrich

2020

J. High Energ. Phys.

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We classify shapes of Higgs boson pair invariant mass distributions m hh , calculated at NLO with full top quark mass dependence, and visualise how distinct classes of shapes relate to the underlying coupling parameter space. Our study is based on a five-dimensional parameter space relevant for Higgs boson pair production in a non-linear Effective Field Theory framework. We use two approaches: an analysis based on predefined shape types and a classification into shape clusters based on unsupervised learning. We find that our method based on unsupervised learning is able to capture shape features very well and therefore allows a more detailed study of the impact of anomalous couplings on the m hh shape compared to more conventional approaches to a shape analysis.

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“…Their contributions to the several Higgs vertices, including non-SM Lorentz structures, are described in Ref. [9,34].…”

Section: Higgs and Gauge Sectormentioning

confidence: 99%

The Gauge-Higgs legacy of the LHC run II

Biekötter

Corbett²,

Plehn

2019

SciPost Phys.

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We present a global analysis of the Higgs and electroweak sector based on LHC Run II and electroweak precision observables. We show which measurements provide the leading constraints on Higgs-related operators, and how the achieved LHC precision makes it necessary to combine rate measurements with electroweak precision observables. The SFitter framework allows us to include kinematic distributions beyond pre-defined ATLAS and CMS observables, independently study correlations, and avoid Gaussian assumptions for theory uncertainties. These Run II results are a step towards a precision physics program at the LHC, interpreted in terms of effective operators.

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Current and future constraints on Higgs couplings in the nonlinear Effective Theory

Cited by 88 publications

References 116 publications

Colorful imprints of heavy states in the electroweak effective theory

Colorful imprints of heavy states in the electroweak effective theory

Exploring anomalous couplings in Higgs boson pair production through shape analysis

The Gauge-Higgs legacy of the LHC run II

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