Extracting Effective Higgs Couplings in the Golden Channel

Chen, Yi; Vega-Morales, Roberto

doi:10.1007/JHEP04(2014)057

Title: Extracting Effective Higgs Couplings in the Golden Channel

Abstract

Kinematic distributions in Higgs decays to four charged leptons, the so called ‘golden channel, are a powerful probe of the tensor structure of its couplings to neutral electroweak gauge bosons. In this study we construct the first part of a comprehensive analysis framework designed to maximize the information contained in this channel in order to perform direct extraction of the various possible Higgs couplings. We first complete an earlier analytic calculation of the leading order fully differential cross sections for the golden channel signal and background to include the 4e and 4μ final states with interference between identical final states. We also examine the relative fractions of the different possible combinations of scalar-tensor couplings by integrating the fully differential cross section over all kinematic variables as well as show various doubly differential spectra for both the signal and background. From these analytic expressions we then construct a ‘generator level’ analysis framework based on the maximum likelihood method. Then, we demonstrate the ability of our framework to perform multi-parameter extractions of all the possible effective couplings of a spin-0 scalar to pairs of neutral electroweak gauge bosons including any correlations. Furthermore, this framework provides a powerful method for study of thesemore »« less

Authors:

Chen, Yi ^[1]; Vega-Morales, Roberto ^[2]

California Inst. of Technology (CalTech), Pasadena, CA (United States)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Publication Date:: Tue Apr 08 00:00:00 EDT 2014

Research Org.:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1226269

Report Number(s):: FERMILAB-PUB-13-351-T; LPT-ORSAY-13-73; NUHEP-TH-13-03
Journal ID: ISSN 1029-8479; arXiv eprint number arXiv:1310.2893

Grant/Contract Number:: AC02-07CH11359

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: 2014; Journal Issue: 57; Journal ID: ISSN 1029-8479

Publisher:: Springer Berlin

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; higgs physics; beyond standard model; standard model

Citation Formats


                    Chen, Yi, and Vega-Morales, Roberto. Extracting Effective Higgs Couplings in the Golden Channel.  United States: N. p., 2014. 
Web.  doi:10.1007/JHEP04(2014)057.

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                    Chen, Yi, & Vega-Morales, Roberto. Extracting Effective Higgs Couplings in the Golden Channel.  United States.  https://doi.org/10.1007/JHEP04(2014)057

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                    Chen, Yi, and Vega-Morales, Roberto. Tue .  
"Extracting Effective Higgs Couplings in the Golden Channel".  United States.  https://doi.org/10.1007/JHEP04(2014)057.  https://www.osti.gov/servlets/purl/1226269.

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@article{osti_1226269,

  title        = {Extracting Effective Higgs Couplings in the Golden Channel},

  author       = {Chen, Yi and Vega-Morales, Roberto},

  abstractNote = {Kinematic distributions in Higgs decays to four charged leptons, the so called ‘golden channel, are a powerful probe of the tensor structure of its couplings to neutral electroweak gauge bosons. In this study we construct the first part of a comprehensive analysis framework designed to maximize the information contained in this channel in order to perform direct extraction of the various possible Higgs couplings. We first complete an earlier analytic calculation of the leading order fully differential cross sections for the golden channel signal and background to include the 4e and 4μ final states with interference between identical final states. We also examine the relative fractions of the different possible combinations of scalar-tensor couplings by integrating the fully differential cross section over all kinematic variables as well as show various doubly differential spectra for both the signal and background. From these analytic expressions we then construct a ‘generator level’ analysis framework based on the maximum likelihood method. Then, we demonstrate the ability of our framework to perform multi-parameter extractions of all the possible effective couplings of a spin-0 scalar to pairs of neutral electroweak gauge bosons including any correlations. Furthermore, this framework provides a powerful method for study of these couplings and can be readily adapted to include the relevant detector and systematic effects which we demonstrate in an accompanying study to follow.},

  doi          = {10.1007/JHEP04(2014)057},

  journal      = {Journal of High Energy Physics (Online)},

  number       = 57,

  volume       = 2014,

  place        = {United States},

  year         = {Tue Apr 08 00:00:00 EDT 2014},

  month        = {Tue Apr 08 00:00:00 EDT 2014}

}

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Title: Extracting Effective Higgs Couplings in the Golden Channel

Abstract

Citation Formats

Prospective analysis of spin- and CP-sensitive variables in H $\rightarrow$ ZZ $\rightarrow$ l + 1l- 1l + 2l- 2 at the LHC journal, January 2004

Aspects of CP violation in the HZZ coupling at the LHC journal, December 2007

Model-independent analysis of CP violation effects in decays of the Higgs boson into a Pair of the W and Z bosons journal, November 2008

Improving the sensitivity of Higgs boson searches in the golden channel journal, November 2011

CalcHEP 3.4 for collider physics within and beyond the Standard Model journal, July 2013

The matrix element method at next-to-leading order journal, November 2012

Spherical Parametrization of the Higgs Boson Candidate journal, July 2013

Scrutinizing the Higgs signal and background in the 2e2μ golden channel journal, January 2013

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MadGraph/MadEvent v4: the new web generation journal, September 2007

Higgs at last journal, November 2013

TRACER version 1.1 journal, February 1993

JaxoDraw: A graphical user interface for drawing Feynman diagrams. Version 2.0 release notes journal, September 2009

Review of Particle Physics journal, July 2010

Review of Particle Physics text, January 2008

A framework for Higgs characterisation text, January 2013

Review of Particle Physics text, January 2018

Review of Particle Physics text, January 2012

FeynRules - Feynman rules made easy text, January 2008

JaxoDraw: A graphical user interface for drawing Feynman diagrams. Version 2.0 release notes text, January 2008

Improving the sensitivity of Higgs boson searches in the golden channel text, January 2011

Inadequacy of zero-width approximation for a light Higgs boson signal text, January 2012

CalcHEP 3.4 for collider physics within and beyond the Standard Model text, January 2012

Scrutinizing the Higgs Signal and Background in the $2e2μ$ Golden Channel text, January 2012

Higgs At Last text, January 2013

A framework for Higgs characterisation text, January 2013

Identifying the Higgs Spin and Parity in Decays to Z Pairs text, January 2002

Light (and darkness) from a light hidden Higgs journal, June 2018

Effective field theory approach to LHC Higgs data journal, August 2016

Constraints on the spin-parity and anomalous H V V couplings of the Higgs boson in proton collisions at 7 and 8 TeV journal, July 2015

Better Higgs- C P tests through information geometry journal, May 2018

Probing $$\textit{CP}$$ CP -violating Higgs and gauge-boson couplings in the Standard Model effective field theory journal, October 2017

Constraints on the spin-parity and anomalous H V V couplings of the Higgs boson in proton collisions at 7 and 8 TeV text, January 2015

Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV text, January 2015

Effective field theory approach to LHC Higgs data text, January 2015

Higgs decay into four charged leptons in the presence of dimension-six operators text, January 2017

Better Higgs-CP Tests Through Information Geometry text, January 2017

Light (and darkness) from a light hidden Higgs text, January 2018

Prospective analysis of spin- and CP-sensitive variables in H $\rightarrow$ ZZ $\rightarrow$ l + 1l- 1l + 2l- 2 at the LHC
journal, January 2004

Aspects of CP violation in the HZZ coupling at the LHC
journal, December 2007

Model-independent analysis of CP violation effects in decays of the Higgs boson into a Pair of the W and Z bosons
journal, November 2008

Improving the sensitivity of Higgs boson searches in the golden channel
journal, November 2011

CalcHEP 3.4 for collider physics within and beyond the Standard Model
journal, July 2013

The matrix element method at next-to-leading order
journal, November 2012

Spherical Parametrization of the Higgs Boson Candidate
journal, July 2013

Scrutinizing the Higgs signal and background in the 2e2μ golden channel
journal, January 2013

FeynRules – Feynman rules made easy
journal, September 2009

MadGraph/MadEvent v4: the new web generation
journal, September 2007

Higgs at last
journal, November 2013

TRACER version 1.1
journal, February 1993

JaxoDraw: A graphical user interface for drawing Feynman diagrams. Version 2.0 release notes
journal, September 2009

Review of Particle Physics
journal, July 2010

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Review of Particle Physics
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Review of Particle Physics
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FeynRules - Feynman rules made easy
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JaxoDraw: A graphical user interface for drawing Feynman diagrams. Version 2.0 release notes
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Improving the sensitivity of Higgs boson searches in the golden channel
text, January 2011

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Scrutinizing the Higgs Signal and Background in the $2e2μ$ Golden Channel
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Higgs At Last
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Identifying the Higgs Spin and Parity in Decays to Z Pairs
text, January 2002

Light (and darkness) from a light hidden Higgs
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Constraints on the spin-parity and anomalous $H V V$ couplings of the Higgs boson in proton collisions at 7 and 8 TeV
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Better Higgs- $C P$ tests through information geometry
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