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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)

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 Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0012704
OSTI ID:
1466605
Report Number(s):
BNL-207974-2018-JAAM
Journal Information:
Journal of High Energy Physics (Online), Vol. 2018, Issue 6; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 162 works
Citation information provided by
Web of Science

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: a Python package for the running and matching of Wilson coefficients above and below the electroweak scale journal December 2018
QCD corrections in Standard Model EFT fits to W Z and W W production journal December 2019
Consistent Searches for SMEFT Effects in Non-Resonant Dilepton Events text January 2018
The full lepton flavor of the littlest Higgs model with T-parity journal July 2019
New physics in double Higgs production at future e+e− colliders journal May 2019
Can New Physics Hide inside the Proton? journal September 2019
A global likelihood for precision constraints and flavour anomalies journal June 2019
Diboson at the LHC vs LEP text January 2018
Prospects for precision measurement of diboson processes in the semileptonic decay channel in future LHC runs journal March 2019
Consistent searches for SMEFT effects in non-resonant dilepton events text January 2019
Studies of dimension-six EFT effects in vector boson scattering journal May 2019
Revisiting the t t ¯ h h channel at the FCC-hh journal October 2019
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
Precision Higgs physics at the CEPC journal April 2019
New Physics in $${\varvec{b \rightarrow s \ell ^+ \ell ^-}}$$ b → s ℓ + ℓ - confronts new data on lepton universality journal August 2019
On the maximal strength of a first-order electroweak phase transition and its gravitational wave signal journal April 2019
Measuring Higgs self-couplings in the presence of V V H and V V HH at the ILC journal June 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
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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