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Title: Updated global SMEFT fit to Higgs, diboson and electroweak data

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [3];  [4]
  1. King's College London (United Kingdom); European Organization for Nuclear Research (CERN), Geneva (Switzerland); National Inst. of Chemical Physics & Biophysics, Tallinn (Estonia)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Univ. of Sussex, Brighton (United Kingdom)
  4. Univ. of Cambridge (United Kingdom)
+ Show Author Affiliations

The ATLAS and CMS collaborations have recently released significant new data on Higgs and diboson production in LHC Run 2. Measurements of Higgs properties have improved in many channels, while kinematic information for h → γγ and h → ZZ can now be more accurately incorporated in fits using the STXS method, and W+W- diboson production at high pT gives new sensitivity to deviations from the Standard Model. We have performed an updated global fit to precision electroweak data, W+W- measurements at LEP, and Higgs and diboson data from Runs 1 and 2 of the LHC in the framework of the Standard Model Effective Field Theory (SMEFT), allowing all coefficients to vary across the combined dataset, and present the results in both the Warsaw and SILH operator bases. We exhibit the improvement in the constraints on operator coefficients provided by the LHC Run 2 data, and discuss the correlations between them. We also explore the constraints our fit results impose on several models of physics beyond the Standard Model, including models that contribute to the operator coefficients at the tree level and stops in the MSSM that contribute via loops.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Grant/Contract Number:
SC0012704
OSTI ID:
1466605
Report Number(s):
BNL--207974-2018-JAAM
Journal Information:
Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 6 Vol. 2018; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English

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A global view on the Higgs self-coupling at lepton colliders text January 2017
A global view on the Higgs self-coupling at lepton colliders text January 2018
The measurement of the Higgs self-coupling at the LHC: theoretical status text January 2013
Effective Lagrangian for a light Higgs-like scalar text January 2013
One-loop effective lagrangians after matching text January 2016
The measurement of the Higgs self-coupling at the LHC: theoretical status text January 2012
Complete Higgs Sector Constraints on Dimension-6 Operators text January 2014
Model-independent precision constraints on dimension-6 operators text January 2014
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Electroweak constraints on flavorful effective theories text January 2015
Effective field theory approach to LHC Higgs data text January 2015
Low-derivative operators of the Standard Model effective field theory via Hilbert series methods text January 2015
The Universal One-Loop Effective Action text January 2015
One-loop effective lagrangians after matching text January 2016
Low energy behaviour of standard model extensions preprint January 2016
One-loop Matching and Running with Covariant Derivative Expansion preprint January 2016
Mixed Heavy-Light Matching in the Universal One-Loop Effective Action text January 2016
On the Validity of the Effective Field Theory Approach to SM Precision Tests text January 2016
Integrating out heavy particles with functional methods: a simplified framework text January 2016
A global view on the Higgs self-coupling text January 2017
Exploring Extended Scalar Sectors with Di-Higgs Signals: A Higgs EFT Perspective text January 2017
Compilation of low-energy constraints on 4-fermion operators in the SMEFT text January 2017
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Vector-like quarks with non-renormalizable interactions journal January 2020
O new physics, where art thou? A global search in the top sector journal February 2020
Diboson at the LHC vs LEP journal March 2019
Constraining four-fermion operators using rare top decays journal April 2019
A Monte Carlo global analysis of the Standard Model Effective Field Theory: the top quark sector journal April 2019
New physics in double Higgs production at future e+e− colliders journal May 2019
Measurement of VH, H → b b ¯ $$ \mathrm{H}\to \mathrm{b}\overline{\mathrm{b}} $$ production as a function of the vector-boson transverse momentum in 13 TeV pp collisions with the ATLAS detector journal May 2019
The decay h → Zγ in the Standard-Model Effective Field Theory journal June 2019
Consistent searches for SMEFT effects in non-resonant dilepton events journal July 2019
The full lepton flavor of the littlest Higgs model with T-parity journal July 2019
Dimension-six electroweak top-loop effects in Higgs production and decay journal August 2018
The decay h → γγ in the Standard-Model Effective Field Theory journal August 2018
Higgs boson pair production in non-linear Effective Field Theory with full mt-dependence at NLO QCD journal September 2018
Boosting H → b b ¯ $$ H\to b\overline{b} $$ with machine learning journal October 2018
Top-quark electroweak interactions at high energy journal October 2019
Digging for top squarks from Higgs data: from signal strengths to differential distributions journal November 2018
Benchmarking simplified template cross sections in W H production journal November 2019
Resonant di-Higgs production at gravitational wave benchmarks: a collider study using machine learning journal December 2018
Consistency of the standard model effective field theory journal December 2019
Prospects for the determination of the top-quark Yukawa coupling at future ${e}^{+}{e}^{-}$ colliders journal August 2019
On the maximal strength of a first-order electroweak phase transition and its gravitational wave signal journal April 2019
Precision Higgs physics at the CEPC journal April 2019
Can New Physics Hide inside the Proton? journal September 2019
Revisiting the t t ¯ h h channel at the FCC-hh journal October 2019
Symmetry and geometry in a generalized Higgs effective field theory: Finiteness of oblique corrections versus perturbative unitarity journal October 2019
QCD corrections in Standard Model EFT fits to W Z and W W production journal December 2019
Electroweak and QCD corrections to Z and W pole observables in the standard model EFT journal January 2020
Effective field theory in the top sector: Do multijets help? journal February 2019
Prospects for precision measurement of diboson processes in the semileptonic decay channel in future LHC runs journal March 2019
Measuring Higgs Couplings without Higgs Bosons journal October 2019
: a Python package for the running and matching of Wilson coefficients above and below the electroweak scale journal December 2018
Studies of dimension-six EFT effects in vector boson scattering journal May 2019
A global likelihood for precision constraints and flavour anomalies journal June 2019
New Physics in $${\varvec{b \rightarrow s \ell ^+ \ell ^-}}$$ b → s ℓ + ℓ - confronts new data on lepton universality journal August 2019
Measurement of fiducial and differential $$W^+W^-$$W+W- production cross-sections at $$\sqrt{s}=13$$s=13 TeV with the ATLAS detector journal October 2019
Measuring Higgs self-couplings in the presence of V V H and V V HH at the ILC journal June 2019
The Global Higgs Picture at 27 TeV journal January 2019
The Gauge-Higgs legacy of the LHC run II journal January 2019
Constraining new physics from Higgs measurements with Lilith: update to LHC Run 2 results journal January 2019
Diboson at the LHC vs LEP text January 2018
Measurement of VH, $ \mathrm{H}\to \mathrm{b}\overline{\mathrm{b}} $ production as a function of the vector-boson transverse momentum in 13 TeV pp collisions with the ATLAS detector text January 2019
Dimension-six electroweak top-loop effects in Higgs production and decay text January 2018
Prospects for the determination of the top-quark Yukawa coupling at future $e^+e^-$ colliders text January 2018
Higgs boson pair production in non-linear Effective Field Theory with full $m_t$-dependence at NLO QCD text January 2018
Resonant Di-Higgs Production at Gravitational Wave Benchmarks: A Collider Study using Machine Learning text January 2018
On the Maximal Strength of a First-Order Electroweak Phase Transition and its Gravitational Wave Signal text January 2018
Constraining four-fermion operators using rare top decays text January 2018
Effective Field Theory in the top sector: do multijets help? text January 2018
New Physics in Double Higgs Production at Future $e^+ e^-$ Colliders text January 2019
Top-quark electroweak interactions at high energy text January 2019
Can New Physics hide inside the proton? text January 2019
O new physics, where art thou? A global search in the top sector text January 2019
Consistent Searches for SMEFT Effects in Non-Resonant Dilepton Events text January 2018
Consistent searches for SMEFT effects in non-resonant dilepton events text January 2019

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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LEP
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