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

Khachatryan, Vardan

doi:10.1103/PhysRevD.92.012004

Title: Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV

Abstract

Our study of the spin-parity and tensor structure of the interactions of the recently discovered Higgs boson is performed using the H→ZZ,Zγ*,γ*γ*→4ℓ, H→WW→ℓνℓν, and H→γγ decay modes. The full data set recorded by the CMS experiment during the LHC run 1 is used, corresponding to an integrated luminosity of up to 5.1 fb^-1 at a center-of-mass energy of 7 TeV and up to 19.7 fb^-1 at 8 TeV. A wide range of spin-two models is excluded at a 99% confidence level or higher, or at a 99.87% confidence level for the minimal gravitylike couplings, regardless of whether assumptions are made on the production mechanism. Any mixed-parity spin-one state is excluded in the ZZ and WW modes at a greater than 99.999% confidence level. Under the hypothesis that the resonance is a spin-zero boson, the tensor structure of the interactions of the Higgs boson with two vector bosons ZZ, Zγ, γγ, and WW is investigated and limits on eleven anomalous contributions are set. Furthermore, the tighter constraints on anomalous HVV interactions are obtained by combining the HZZand HWW measurements. All observations are consistent with the expectations for the standard model Higgs boson with the quantum numbers J^PC=0⁺⁺.

Authors:

Khachatryan, Vardan ^[1]

Yerevan Physics Inst. (YerPhI) (Armenia). et al.

Publication Date:: Mon Jul 13 00:00:00 EDT 2015

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

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

Contributing Org.:: CMS Collaboration

OSTI Identifier:: 1234864

Report Number(s):: FERMILAB-PUB-14-490-CMS; CERN-PH-EP-2014-265; CMS-HIG-14-018
Journal ID: ISSN 1550-7998; arXiv eprint number arXiv:1411.3441; TRN: US1600937

Grant/Contract Number:: AC02-07CH11359

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review. D, Particles, Fields, Gravitation and Cosmology

Additional Journal Information:: Journal Volume: 92; Journal Issue: 1; Journal ID: ISSN 1550-7998

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Khachatryan, Vardan. Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV.  United States: N. p., 2015. 
Web.  doi:10.1103/PhysRevD.92.012004.

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                    Khachatryan, Vardan. Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV.  United States.  https://doi.org/10.1103/PhysRevD.92.012004

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                    Khachatryan, Vardan. Mon .  
"Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV".  United States.  https://doi.org/10.1103/PhysRevD.92.012004.  https://www.osti.gov/servlets/purl/1234864.

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@article{osti_1234864,

  title        = {Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV},

  author       = {Khachatryan, Vardan},

  abstractNote = {Our study of the spin-parity and tensor structure of the interactions of the recently discovered Higgs boson is performed using the H→ZZ,Zγ*,γ*γ*→4ℓ, H→WW→ℓνℓν, and H→γγ decay modes. The full data set recorded by the CMS experiment during the LHC run 1 is used, corresponding to an integrated luminosity of up to 5.1 fb-1 at a center-of-mass energy of 7 TeV and up to 19.7 fb-1 at 8 TeV. A wide range of spin-two models is excluded at a 99% confidence level or higher, or at a 99.87% confidence level for the minimal gravitylike couplings, regardless of whether assumptions are made on the production mechanism. Any mixed-parity spin-one state is excluded in the ZZ and WW modes at a greater than 99.999% confidence level. Under the hypothesis that the resonance is a spin-zero boson, the tensor structure of the interactions of the Higgs boson with two vector bosons ZZ, Zγ, γγ, and WW is investigated and limits on eleven anomalous contributions are set. Furthermore, the tighter constraints on anomalous HVV interactions are obtained by combining the HZZand HWW measurements. All observations are consistent with the expectations for the standard model Higgs boson with the quantum numbers JPC=0++.},

  doi          = {10.1103/PhysRevD.92.012004},

  journal      = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},

  number       = 1,

  volume       = 92,

  place        = {United States},

  year         = {Mon Jul 13 00:00:00 EDT 2015},

  month        = {Mon Jul 13 00:00:00 EDT 2015}

}

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Figures / Tables:

Table 1: List of anomalous HVV couplings considered in the measurements assuming a spin-zero Higgs boson. The definition of the effective fractions is discussed in the text and the translation constant is given in each case. The effective cross sections correspond to the processes H $\rightarrow$ VV $\rightarrow$ 2e2$μ$ andmore »

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Journal Article Aad, G. ; Abbott, B. ; Abdallah, J. ; ... - European Physical Journal. C, Particles and Fields

Studies of the spin, parity and tensor couplings of the Higgs boson in the H→ZZ*→4ℓ, H→WW*→eνμν and H→γγ decay processes at the LHC are presented. The investigations are based on 25fb^-1 of pp collision data collected by the ATLAS experiment at √s=7 TeV and √s=8 TeV. The Standard Model (SM) Higgs boson hypothesis, corresponding to the quantum numbers J^P=0⁺, is tested against several alternative spin scenarios, including non-SM spin-0 and spin-2 models with universal and non-universal couplings to fermions and vector bosons. All tested alternative models are excluded in favour of the SM Higgs boson hypothesis at more than 99.9more »« less
https://doi.org/10.1140/epjc/s10052-015-3685-1
Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector

Journal Article Aad, G. ; Abbott, B. ; Abdallah, J. ; ... - European Physical Journal. C, Particles and Fields

Studies of the spin, parity and tensor couplings of the Higgs boson in the H→ZZ*→4ℓ, H→WW*→eνμν and H→γγ decay processes at the LHC are presented. The investigations are based on 25fb^–1 of pp collision data collected by the ATLAS experiment at √s=7 TeV and √s=8 TeV. The Standard Model (SM) Higgs boson hypothesis, corresponding to the quantum numbers JP=0⁺, is tested against several alternative spin scenarios, including non-SM spin-0 and spin-2 models with universal and non-universal couplings to fermions and vector bosons. All tested alternative models are excluded in favour of the SM Higgs boson hypothesis at more than 99.9more »« less
Cited by 128
https://doi.org/10.1140/epjc/s10052-015-3685-1

Full Text Available
Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC

Journal Article ATLAS Collaboration, - Physics Letters. B

Measurements are presented of production properties and couplings of the recently discovered Higgs boson using the decays into boson pairs, H→γγ, H→ZZ{sup *}→4ℓ and H→WW{sup *}→ℓνℓν. The results are based on the complete pp collision data sample recorded by the ATLAS experiment at the CERN Large Hadron Collider at centre-of-mass energies of {radical s}=7 TeV and {radical s}=8 TeV, corresponding to an integrated luminosity of about 25 fb{sup -1}. Evidence for Higgs boson production through vector-boson fusion is reported. Results of combined fits probing Higgs boson couplings to fermions and bosons, as well as anomalous contributions to loop-induced production andmore »« less
https://doi.org/10.1016/j.physletb.2013.08.010

Full Text Available
Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC

Journal Article Aad, G. ; Abajyan, T. ; Abbott, B. ; ... - Physics Letters. B

Measurements are presented of production properties and couplings of the recently discovered Higgs boson using the decays into boson pairs, H→γγ, H→ZZ*→4ℓ and H→WW*→ℓνℓν. The results are based on the complete pp collision data sample recorded by the ATLAS experiment at the CERN Large Hadron Collider at centre-of-mass energies ofmore »« less
Cited by 371
https://doi.org/10.1016/j.physletb.2013.08.010

Full Text Available

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Title: Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV

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FeynRules – Feynman rules made easy journal, September 2009

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Performance of CMS muon reconstruction in pp collision events at √s = 7 TeV journal, October 2012

Broken symmetries, massless particles and gauge fields journal, September 1964

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A fast track towards the ‘Higgs’ spin and parity journal, November 2012

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Simple tests for CP or P violation by sequential decays: V 1 V 2 modes with decays into l ¯ A l B and/or q ¯ A q B journal, January 1986

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The anti- k t jet clustering algorithm journal, April 2008

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PYTHIA 6.4 physics and manual journal, May 2006

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Higgs production via gluon fusion in the POWHEG approach in the SM and in the MSSM journal, February 2012

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Testing CP violation in ZZH interactions at the LHC journal, September 2010

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Angular Correlations in K e 4 Decays and Determination of Low-Energy π − π Phase Shifts journal, January 1965

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Geant4—a simulation toolkit journal, July 2003

Presentation of search results: the CL s technique journal, September 2002

Towards establishing the spin of warped gravitons
journal, October 2008

Constraining anomalous $H V V$ interactions at proton and lepton colliders
journal, February 2014

Search for the standard model Higgs boson produced in association with a $W$ or a $Z$ boson and decaying to bottom quarks
journal, January 2014

FeynRules – Feynman rules made easy
journal, September 2009

Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC
journal, December 2011

Parity of the Neutral Pion and the Decay $π^{0} \to 2 e^{+} + 2 e^{-}$
journal, June 1962

NLO Higgs boson production via vector-boson fusion matched with shower in POWHEG
journal, February 2010

FastJet user manual: (for version 3.0.2)
journal, March 2012

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

TAUOLA - a library of Monte Carlo programs to simulate decays of polarized τ leptons
journal, May 1991

Time-dependent and time-integrated angular analysis of $B \to φ K_{S}^{0} π^{0}$ and $φ K^{\pm} π^{\mp}$
journal, November 2008

Precision studies of the Higgs boson decay channel $H \to Z Z \to 4 ℓ$ with MEKD
journal, March 2013

Probing CP violation via Higgs boson decays to four leptons
journal, December 1993

Performance of CMS muon reconstruction in pp collision events at √s = 7 TeV
journal, October 2012

Broken symmetries, massless particles and gauge fields
journal, September 1964

Jet angular correlation in vector-boson fusion processes at hadron colliders
journal, July 2009

Matching NLO QCD computations with parton shower simulations: the POWHEG method
journal, November 2007

A fast track towards the ‘Higgs’ spin and parity
journal, November 2012

The CMS experiment at the CERN LHC
journal, August 2008

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

Determining the Structure of Higgs Couplings at the CERN Large Hadron Collider
journal, January 2002

Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
journal, September 2014

Experimental study of $χ_{b} (2 P) \to π π χ_{b} (1 P)$
journal, January 2006

MCFM for the Tevatron and the LHC
journal, August 2010

Selection Rules for the Dematerialization of a Particle into Two Photons
journal, January 1950

8D likelihood effective Higgs couplings extraction framework in h → 4ℓ
journal, January 2015

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journal, May 2013

Confidence level computation for combining searches with small statistics
journal, September 1999

On Estimation of a Probability Density Function and Mode
journal, September 1962

Observation of Z decays to four leptons with the CMS detector at the LHC
journal, December 2012

Observation of a new boson with mass near 125 GeV in pp collisions at $ \sqrt{s}=7 $ and 8 TeV
journal, June 2013

Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes
journal, August 2014

Warped gravitons at the CERN LHC and beyond
journal, August 2007

PHANTOM: A Monte Carlo event generator for six parton final states at high energy colliders
journal, March 2009

An Alternative to Compactification
journal, December 1999

The Large-Sample Distribution of the Likelihood Ratio for Testing Composite Hypotheses
journal, March 1938

Study of the Mass and Spin-Parity of the Higgs Boson Candidate via Its Decays to $Z$ Boson Pairs
journal, February 2013

Probing the Higgs Couplings to Photons in $h \to 4 ℓ$ at the LHC
journal, November 2014

Evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons
journal, May 2014

Simple tests for CP or P violation by sequential decays: $V_{1}$ $V_{2}$ modes with decays into l $¯_{A}$ $l_{B}$ and/or q $¯_{A}$ $q_{B}$
journal, January 1986

Landau-Yang Theorem and Decays of a $Z^{'}$ Boson into Two $Z$ Bosons
journal, August 2008

Vector boson pair production at the LHC
journal, July 2011

The anti- k _t jet clustering algorithm
journal, April 2008

Revealing the electroweak properties of a new scalar resonance
journal, October 2010

MadGraph 5: going beyond
journal, June 2011

Remarks on Some Nonparametric Estimates of a Density Function
journal, September 1956

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

Measurement of Inclusive $W$ and $Z$ Boson Production Cross Sections in $p p$ Collisions at $\sqrt{s} = 8 TeV$
journal, May 2014

Review of Particle Physics
journal, August 2014

Evidence for the spin-0 nature of the Higgs boson using ATLAS data
journal, October 2013

Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
journal, September 2012

PYTHIA 6.4 physics and manual
journal, May 2006

Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
journal, September 2012

Higgs production via gluon fusion in the POWHEG approach in the SM and in the MSSM
journal, February 2012

$CP$ -violating $ZZh$ coupling at $e^{+} e^{-}$ linear colliders
journal, April 2001

Partial-symmetries of weak interactions
journal, February 1961

Testing CP violation in ZZH interactions at the LHC
journal, September 2010

Determination of the Parity of the Neutral Pion via Its Four-Electron Decay
journal, May 2008

Correlation between decay planes in Higgs-boson decays into a W pair (into a Z pair)
journal, March 1988

Role of interference in unraveling the $Z Z$ couplings of the newly discovered boson at the LHC
journal, February 2014

Gluon-induced W -boson pair production at the LHC
journal, December 2006

Constraining the Higgs boson width with $Z Z$ production at the LHC
journal, September 2013

CP -odd correlation in the decay of a neutral Higgs boson into ZZ , $W^{+}$ $W^{-}$ , or tt¯
journal, October 1993

Spherical Parametrization of the Higgs Boson Candidate
journal, July 2013

Angular Correlations in $K_{e 4}$ Decays and Determination of Low-Energy $π - π$ Phase Shifts
journal, April 1968

Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states
journal, January 2014

Extracting effective Higgs couplings in the golden channel
journal, April 2014

Observation of the diphoton decay of the Higgs boson and measurement of its properties
journal, October 2014

Isospin breaking in technicolor models
journal, October 1980

Energy spectra and energy correlations in the decayH?ZZ??+???+??
journal, March 1995

Beyond geolocating: Constraining higher dimensional operators in $H \to 4 ℓ$ with off-shell production and more
journal, February 2015

Precision Study of Positronium: Testing Bound State qed Theory
journal, September 2004

Angular Correlations in $K_{e 4}$ Decays and Determination of Low-Energy $π - π$ Phase Shifts
journal, January 1965

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

Geant4—a simulation toolkit
journal, July 2003

Presentation of search results: the CL _s technique
journal, September 2002

Have we observed the Higgs boson (imposter)?
journal, November 2012

Spin and parity of a single-produced resonance at the LHC
journal, November 2012

Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC
journal, October 2013

Branching ratios and $CP$ asymmetries in the decay $B \to VV$
journal, January 1992