Updated global SMEFT fit to Higgs, diboson and electroweak data
Abstract
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.
- Authors:
-
- King's College London (United Kingdom); European Organization for Nuclear Research (CERN), Geneva (Switzerland); National Inst. of Chemical Physics & Biophysics, Tallinn (Estonia)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Univ. of Sussex, Brighton (United Kingdom)
- Univ. of Cambridge (United Kingdom)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1466605
- Report Number(s):
- BNL-207974-2018-JAAM
Journal ID: ISSN 1029-8479
- Grant/Contract Number:
- SC0012704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2018; Journal Issue: 6; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; standard model; diboson; LEP; Higgs; SMEFT; coefficients; LHC
Citation Formats
Ellis, John, Murphy, Christopher W., Sanz, Verónica, and You, Tevong. Updated global SMEFT fit to Higgs, diboson and electroweak data. United States: N. p., 2018.
Web. doi:10.1007/JHEP06(2018)146.
Ellis, John, Murphy, Christopher W., Sanz, Verónica, & You, Tevong. Updated global SMEFT fit to Higgs, diboson and electroweak data. United States. https://doi.org/10.1007/JHEP06(2018)146
Ellis, John, Murphy, Christopher W., Sanz, Verónica, and You, Tevong. Tue .
"Updated global SMEFT fit to Higgs, diboson and electroweak data". United States. https://doi.org/10.1007/JHEP06(2018)146. https://www.osti.gov/servlets/purl/1466605.
@article{osti_1466605,
title = {Updated global SMEFT fit to Higgs, diboson and electroweak data},
author = {Ellis, John and Murphy, Christopher W. and Sanz, Verónica and You, Tevong},
abstractNote = {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.},
doi = {10.1007/JHEP06(2018)146},
journal = {Journal of High Energy Physics (Online)},
number = 6,
volume = 2018,
place = {United States},
year = {Tue Jun 26 00:00:00 EDT 2018},
month = {Tue Jun 26 00:00:00 EDT 2018}
}
Web of Science
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New Physics in $${\varvec{b \rightarrow s \ell ^+ \ell ^-}}$$ b → s ℓ + ℓ - confronts new data on lepton universality
journal, August 2019
- Ciuchini, Marco; Coutinho, António M.; Fedele, Marco
- The European Physical Journal C, Vol. 79, Issue 8
On the maximal strength of a first-order electroweak phase transition and its gravitational wave signal
journal, April 2019
- Ellis, John; Lewicki, Marek; No, José Miguel
- Journal of Cosmology and Astroparticle Physics, Vol. 2019, Issue 04
Measuring Higgs self-couplings in the presence of V V H and V V HH at the ILC
journal, June 2019
- Kumar, Satendra; Poulose, Poulose; Rahaman, Rafiqul
- International Journal of Modern Physics A, Vol. 34, Issue 18
Dimension-six electroweak top-loop effects in Higgs production and decay
text, January 2018
- Vryonidou, Eleni; Zhang, Cen
- arXiv
Prospects for the determination of the top-quark Yukawa coupling at future $e^+e^-$ colliders
text, January 2018
- Boselli, Stefano; Hunter, Ross; Mitov, Alexander
- arXiv
Higgs boson pair production in non-linear Effective Field Theory with full $m_t$-dependence at NLO QCD
text, January 2018
- Buchalla, G.; Capozi, M.; Celis, A.
- arXiv
Resonant Di-Higgs Production at Gravitational Wave Benchmarks: A Collider Study using Machine Learning
text, January 2018
- Alves, Alexandre; Ghosh, Tathagata; Guo, Huai-Ke
- arXiv
On the Maximal Strength of a First-Order Electroweak Phase Transition and its Gravitational Wave Signal
text, January 2018
- Ellis, John; Lewicki, Marek; No, José Miguel
- arXiv
Constraining four-fermion operators using rare top decays
text, January 2018
- Chala, Mikael; Santiago, Jose; Spannowsky, Michael
- arXiv
Effective Field Theory in the top sector: do multijets help?
text, January 2018
- Englert, Christoph; Russell, Michael; White, Chris D.
- arXiv
New Physics in Double Higgs Production at Future $e^+ e^-$ Colliders
text, January 2019
- Vasquez, Andres; Degrande, Celine; Tonero, Alberto
- arXiv
Top-quark electroweak interactions at high energy
text, January 2019
- Maltoni, Fabio; Mantani, Luca; Mimasu, Ken
- arXiv
Can New Physics hide inside the proton?
text, January 2019
- Carrazza, Stefano; Degrande, Celine; Iranipour, Shayan
- arXiv
O new physics, where art thou? A global search in the top sector
text, January 2019
- Brivio, I.; Bruggisser, S.; Maltoni, F.
- arXiv