# Putting SMEFT Fits to Work

@article{Dawson2020PuttingSF, title={Putting SMEFT Fits to Work}, author={Sally Dawson and Samuel Homiller and Samuel D. Lane}, journal={Physical Review D}, year={2020} }

The Standard Model Effective Field Theory (SMEFT) provides a consistent framework for comparing precision measurements at the LHC to the Standard Model. The observation of statistically significant non-zero SMEFT coefficients would correspond to physics beyond the Standard Model (BSM) of some sort. A more difficult question to answer is what, if any, detailed information about the nature of the underlying high scale model can be obtained from these measurements. In this work, we consider the…

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## References

SHOWING 1-10 OF 83 REFERENCES

### The gauge-Higgs legacy of the LHC Run I

- PhysicsSciPost Physics
- 2019

A bstractThe effective Lagrangian expansion provides a framework to study effects of new physics at the electroweak scale. To make full use of LHC data in constraining higher-dimensional operators we…

### Review of combined measurements of Higgs boson production and decay using up to 80 fb−1 of proton–proton collision data at s = 13 TeV collected with the ATLAS experiment

- PhysicsModern Physics Letters A
- 2020

The combined measurements of Higgs boson production and decay are performed based on up to 80 fb[Formula: see text] of proton–proton collision data collected at [Formula: see text] = 13 TeV by the…

### Bounds and decays of new heavy vector-like top partners

- Physics
- 2010

We study the phenomenology of new heavy vector-like fermions that couple to the third generation quarks via Yukawa interactions, covering all the allowed representations under the standard model…

### Validity of SMEFT studies of VH and VV Production at NLO

- arXiv:2003.07862 [hep-ph].
- 2003

### Vectorlike fermions and Higgs effective field theory revisited

- Physics
- 2017

Heavy vector-like quarks (VLQs) appear in many models of beyond the Standard Model physics. Direct experimental searches require these new quarks to be heavy, $\gsim$ 800-1000 GeV. We perform a…

### Effective description of general extensions of the Standard Model: the complete tree-level dictionary

- Physics
- 2017

A bstractWe compute all the tree-level contributions to the Wilson coefficients of the dimension-six Standard-Model effective theory in ultraviolet completions with general scalar, spinor and vector…

### Pushing Higgs Effective Theory to its Limits

- Physics
- 2016

At the LHC, an effective theory of the Higgs sector allows us to analyze kinematic distributions in addition to inclusive rates, although there is no clear hierarchy of scales. We systematically…

### Benchmarks for Higgs effective theory: extended Higgs sectors

- Physics
- 2015

A bstractPrecise measurements of SM particles properties at the LHC allows to look for heavy New Physics in the context of an Effective Field Theory (EFT). These searches, however, often rely on…

### How to use the Standard Model effective field theory

- Physics
- 2014

A bstractWe present a practical three-step procedure of using the Standard Model effective field theory (SM EFT) to connect ultraviolet (UV) models of new physics with weak scale precision…

### A Higgs conundrum with vector fermions

- Physics
- 2012

Many models of Beyond the Standard Model physics involve heavy colored fermions. We study models where the new fermions have vector interactions and examine the connection between electroweak…