DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Statistical approach to Higgs boson couplings in the standard model effective field theory

Abstract

We perform a parameter fit in the Standard Model Effective Field Theory (SMEFT) with an emphasis on using regularized linear regression to tackle the issue of the large number of parameters in the SMEFT. In regularized linear regression a positive definite function of the parameters of interest is added to the usual cost function. A cross-validation is performed to try to determine the optimal value of the regularization parameter to use, but it selects the Standard Model (SM) as the best model to explain the measurements. Nevertheless as proof of principle of this technique we apply it to fitting Higgs boson signal strengths in SMEFT, including the latest Run-2 results. Results are presented in terms of the eigensystem of the covariance matrix of the least squares estimators as it has a degree model-independent to it. We find several results in this initial work: the SMEFT predicts the total width of the Higgs boson to be consistent with the SM prediction; the ATLAS and CMS experiments at the LHC are currently sensitive to non-resonant double Higgs boson production. Constraints are derived on the viable parameter space for electroweak baryogenesis in the SMEFT, reinforcing the notion that a first order phase transitionmore » requires fairly low scale Beyond the SM physics. Lastly, we study which future experimental measurements would give the most improvement on the global constraints on the Higgs sector of the SMEFT.« less

Authors:
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1416847
Alternate Identifier(s):
OSTI ID: 1414827
Report Number(s):
BNL-114867-2017-JA
Journal ID: ISSN 2470-0010; PRVDAQ; 015007
Grant/Contract Number:  
SC0012704
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 97 Journal Issue: 1; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; standard model; SMEFT: higgs; boson; ATLAS; CMS; baryogenesis

Citation Formats

Murphy, Christopher W. Statistical approach to Higgs boson couplings in the standard model effective field theory. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.97.015007.
Murphy, Christopher W. Statistical approach to Higgs boson couplings in the standard model effective field theory. United States. https://doi.org/10.1103/PhysRevD.97.015007
Murphy, Christopher W. Fri . "Statistical approach to Higgs boson couplings in the standard model effective field theory". United States. https://doi.org/10.1103/PhysRevD.97.015007.
@article{osti_1416847,
title = {Statistical approach to Higgs boson couplings in the standard model effective field theory},
author = {Murphy, Christopher W.},
abstractNote = {We perform a parameter fit in the Standard Model Effective Field Theory (SMEFT) with an emphasis on using regularized linear regression to tackle the issue of the large number of parameters in the SMEFT. In regularized linear regression a positive definite function of the parameters of interest is added to the usual cost function. A cross-validation is performed to try to determine the optimal value of the regularization parameter to use, but it selects the Standard Model (SM) as the best model to explain the measurements. Nevertheless as proof of principle of this technique we apply it to fitting Higgs boson signal strengths in SMEFT, including the latest Run-2 results. Results are presented in terms of the eigensystem of the covariance matrix of the least squares estimators as it has a degree model-independent to it. We find several results in this initial work: the SMEFT predicts the total width of the Higgs boson to be consistent with the SM prediction; the ATLAS and CMS experiments at the LHC are currently sensitive to non-resonant double Higgs boson production. Constraints are derived on the viable parameter space for electroweak baryogenesis in the SMEFT, reinforcing the notion that a first order phase transition requires fairly low scale Beyond the SM physics. Lastly, we study which future experimental measurements would give the most improvement on the global constraints on the Higgs sector of the SMEFT.},
doi = {10.1103/PhysRevD.97.015007},
journal = {Physical Review D},
number = 1,
volume = 97,
place = {United States},
year = {Fri Jan 12 00:00:00 EST 2018},
month = {Fri Jan 12 00:00:00 EST 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevD.97.015007

Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Evidence for the H → b b ¯ $$ H\to b\overline{b} $$ decay with the ATLAS detector
journal, December 2017


The anatomy of electroweak symmetry breaking
journal, February 2008


Bayesian fit of exclusive b → s $ \overline \ell $ ℓ decays: the standard model operator basis
journal, August 2012

  • Beaujean, Frederik; Bobeth, Christoph; van Dyk, Danny
  • Journal of High Energy Physics, Vol. 2012, Issue 8
  • DOI: 10.1007/JHEP08(2012)030

On the consistent use of constructed observables
journal, February 2015


Review of Particle Physics
journal, October 2016


Comprehensive Bayesian analysis of rare (semi)leptonic and radiative $$\varvec{B}$$ B decays
journal, June 2014


A Bayesian view of the Higgs sector with higher dimensional operators
journal, July 2013

  • Dumont, Beranger; Fichet, Sylvain; von Gersdorff, Gero
  • Journal of High Energy Physics, Vol. 2013, Issue 7
  • DOI: 10.1007/JHEP07(2013)065

Renormalization group constraints on new top interactions from electroweak precision data
journal, September 2015

  • de Blas, J.; Chala, M.; Santiago, J.
  • Journal of High Energy Physics, Vol. 2015, Issue 9
  • DOI: 10.1007/JHEP09(2015)189

Towards the ultimate SM fit to close in on Higgs physics
journal, January 2014


Precision electroweak analysis after the Higgs boson discovery
journal, August 2014


Higgs coupling measurements at the LHC
journal, July 2016


CP -conserving two-Higgs-doublet model: The approach to the decoupling limit
journal, April 2003


Measurements of properties of the Higgs boson decaying into the four-lepton final state in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV
journal, November 2017

  • Sirunyan, A. M.; Tumasyan, A.; Adam, W.
  • Journal of High Energy Physics, Vol. 2017, Issue 11
  • DOI: 10.1007/JHEP11(2017)047

Flavour physics from an approximate U(2)3 symmetry
journal, July 2012

  • Barbieri, Riccardo; Buttazzo, Dario; Sala, Filippo
  • Journal of High Energy Physics, Vol. 2012, Issue 7
  • DOI: 10.1007/JHEP07(2012)181

Testing the electroweak phase transition and electroweak baryogenesis at the LHC and a circular electron-positron collider
journal, May 2016


Complete Higgs sector constraints on dimension-6 operators
journal, July 2014

  • Ellis, John; Sanz, Verónica; You, Tevong
  • Journal of High Energy Physics, Vol. 2014, Issue 7
  • DOI: 10.1007/JHEP07(2014)036

Electroweak precision observables and Higgs-boson signal strengths in the Standard Model and beyond: present and future
journal, December 2016

  • de Blas, J.; Ciuchini, M.; Franco, E.
  • Journal of High Energy Physics, Vol. 2016, Issue 12
  • DOI: 10.1007/JHEP12(2016)135

Effective operator contributions to the oblique parameters
journal, July 1998


Constraining Higgs boson effective couplings at electron-positron colliders
journal, March 2017


Right-handed charged currents in the era of the Large Hadron Collider
journal, May 2017

  • Alioli, S.; Cirigliano, V.; Dekens, W.
  • Journal of High Energy Physics, Vol. 2017, Issue 5
  • DOI: 10.1007/JHEP05(2017)086

Using Λ b Λ μ + μ data within a Bayesian analysis of | Δ B | = | Δ S | = 1 decays
journal, July 2016


The Higgs legacy of the LHC Run I
journal, August 2015

  • Corbett, Tyler; Éboli, Oscar J. P.; Gonçalves, Dorival
  • Journal of High Energy Physics, Vol. 2015, Issue 8
  • DOI: 10.1007/JHEP08(2015)156

Erratum to: Comprehensive Bayesian analysis of rare (semi)leptonic and radiative B decays
journal, December 2014


Incorporating doubly resonant W ± data in a global fit of SMEFT parameters to lift flat directions
journal, September 2016

  • Berthier, Laure; Bjørn, Mikkel; Trott, Michael
  • Journal of High Energy Physics, Vol. 2016, Issue 9
  • DOI: 10.1007/JHEP09(2016)157

Robust determination of the Higgs couplings: Power to the data
journal, January 2013


Role of low-energy observables in precision Higgs boson analyses
journal, April 2015


Determining Triple Gauge Boson Couplings from Higgs Data
journal, July 2013


A global view on the Higgs self-coupling
journal, September 2017

  • Di Vita, S.; Grojean, C.; Panico, G.
  • Journal of High Energy Physics, Vol. 2017, Issue 9
  • DOI: 10.1007/JHEP09(2017)069

2, 84, 30, 993, 560, 15456, 11962, 261485, . . .: higher dimension operators in the SM EFT
journal, August 2017

  • Henning, Brian; Lu, Xiaochuan; Melia, Tom
  • Journal of High Energy Physics, Vol. 2017, Issue 8
  • DOI: 10.1007/JHEP08(2017)016

Probing the Higgs self coupling via single Higgs production at the LHC
journal, December 2016

  • Degrassi, G.; Giardino, P. P.; Maltoni, F.
  • Journal of High Energy Physics, Vol. 2016, Issue 12
  • DOI: 10.1007/JHEP12(2016)080

Effective field theory analysis of double Higgs boson production via gluon fusion
journal, August 2015


Constrained curve fitting
journal, March 2002


The global electroweak fit at NNLO and prospects for the LHC and ILC
journal, September 2014


Constraining the top-Higgs sector of the standard model effective field theory
journal, August 2016


Standard model EFT and extended scalar sectors
journal, July 2017


The effective Standard Model after LHC Run I
journal, March 2015

  • Ellis, John; Sanz, Verónica; You, Tevong
  • Journal of High Energy Physics, Vol. 2015, Issue 3
  • DOI: 10.1007/JHEP03(2015)157

Global approach to top-quark flavor-changing interactions
journal, April 2015


Semileptonic B -physics anomalies: A general EFT analysis within U ( 2 ) n flavor symmetry
journal, July 2017


Consistent constraints on the Standard Model Effective Field Theory
journal, February 2016


First-order electroweak phase transition in the standard model with a low cutoff
journal, February 2005


The leptonic future of the Higgs
journal, September 2017

  • Durieux, Gauthier; Grojean, Christophe; Gu, Jiayin
  • Journal of High Energy Physics, Vol. 2017, Issue 9
  • DOI: 10.1007/JHEP09(2017)014

Searching for new physics in the three-body decays of the Higgs-like particle
journal, October 2013

  • Grinstein, Benjamín; Murphy, Christopher W.; Pirtskhalava, David
  • Journal of High Energy Physics, Vol. 2013, Issue 10
  • DOI: 10.1007/JHEP10(2013)077

Effective field theory and electroweak baryogenesis in the singlet-extended Standard Model
journal, February 2016

  • Damgaard, P. H.; Haarr, A.; O’Connell, D.
  • Journal of High Energy Physics, Vol. 2016, Issue 2
  • DOI: 10.1007/JHEP02(2016)107

Electroweak precision observables, new physics and the nature of a 126 GeV Higgs boson
journal, August 2013

  • Ciuchini, Marco; Franco, Enrico; Mishima, Satoshi
  • Journal of High Energy Physics, Vol. 2013, Issue 8
  • DOI: 10.1007/JHEP08(2013)106

Modifications to the properties of the Higgs boson
journal, May 2006


Effective theory analysis of precision electroweak data
journal, April 2005


Model-independent precision constraints on dimension-6 operators
journal, February 2015


Status and prospects of precision analyses with e + e W + W
journal, February 2016


Time to Go Beyond Triple-Gauge-Boson-Coupling Interpretation of W Pair Production
journal, January 2017


Search for a Higgs boson decaying into a Z and a photon in pp collisions at <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>7</mml:mn><mml:mtext> and </mml:mtext><mml:mn>8</mml:mn><mml:mtext> </mml:mtext><mml:mtext>TeV</mml:mtext></mml:math>
journal, November 2013


Dimension-six terms in the Standard Model Lagrangian
journal, October 2010

  • Grzadkowski, B.; Iskrzyński, M.; Misiak, M.
  • Journal of High Energy Physics, Vol. 2010, Issue 10
  • DOI: 10.1007/JHEP10(2010)085

Probing the electroweak phase transition at the LHC
journal, March 2016


Low-energy structure of little Higgs models
journal, July 2004


Disguising the oblique parameters
journal, April 2006


From deep inelastic scattering to heavy-flavor semileptonic decays: Total rates into multihadron final states from lattice QCD
journal, November 2017


Chiral quarks and the non-relativistic quark model
journal, March 1984


Estimation of oblique electroweak corrections
journal, July 1992


Cornering dimension-6 HV V interactions at high energy LHC: the role of event ratios
journal, September 2015

  • Banerjee, Shankha; Mandal, Tanumoy; Mellado, Bruce
  • Journal of High Energy Physics, Vol. 2015, Issue 9
  • DOI: 10.1007/JHEP09(2015)057

Anomalies in B-decays and U(2) flavor symmetry
journal, February 2016


Scheming in the SMEFT. . . and a reparameterization invariance!
journal, July 2017


Feynman rules for the Standard Model Effective Field Theory in R ξ -gauges
journal, June 2017

  • Dedes, A.; Materkowska, W.; Paraskevas, M.
  • Journal of High Energy Physics, Vol. 2017, Issue 6
  • DOI: 10.1007/JHEP06(2017)143

Update of the electroweak precision fit, interplay with Higgs-boson signal strengths and model-independent constraints on new physics
journal, April 2016


B-decay anomalies in a composite leptoquark model
journal, December 2016


Electroweak baryogenesis with anomalous Higgs couplings
journal, April 2016

  • Kobakhidze, Archil; Wu, Lei; Yue, Jason
  • Journal of High Energy Physics, Vol. 2016, Issue 4
  • DOI: 10.1007/JHEP04(2016)011

Probing Higgs boson couplings in H + γ production at the LHC
journal, October 2017


eHDECAY: An implementation of the Higgs effective Lagrangian into HDECAY
journal, December 2014

  • Contino, Roberto; Ghezzi, Margherita; Grojean, Christophe
  • Computer Physics Communications, Vol. 185, Issue 12
  • DOI: 10.1016/j.cpc.2014.06.028

Global Constraints on Anomalous Triple Gauge Couplings in the Effective Field Theory Approach
journal, January 2016


Towards consistent Electroweak Precision Data constraints in the SMEFT
journal, May 2015


The gauge-Higgs legacy of the LHC Run I
journal, July 2016

  • Butter, Anja; Éboli, Oscar J. P.; Gonzalez-Fraile, J.
  • Journal of High Energy Physics, Vol. 2016, Issue 7
  • DOI: 10.1007/JHEP07(2016)152

Search for the Dimuon Decay of the Higgs Boson in p p Collisions at s = 13 TeV with the ATLAS Detector
journal, August 2017