Observation and measurement of Higgs boson decays to $W{W}^{\ast }$ with the ATLAS detector

Abstract

We report the observation of Higgs boson decays to $W{W}^{\ast }$ based on an excess over background of $6.1$ standard deviations in the dilepton final state, where the Standard Model expectation is $5.8$ standard deviations. Evidence for the vector-boson fusion (VBF) production process is obtained with a significance of 3.2 standard deviations. The results are obtained from a data sample corresponding to an integrated luminosity of $25{\text{fb}}^{-1}$ from $\sqrt{s}=7$ and 8 TeV $pp$ collisions recorded by the ATLAS detector at the LHC. For a Higgs boson mass of 125.36 GeV, the ratio of the measured value to the expected value of the total production cross section times branching fraction is $1.09_{-0.15}^{+0.16}{\text{(stat)}}_{-0.14}^{+0.17}\text{(syst)}$. The corresponding ratios for the gluon fusion and vector-boson fusion production mechanisms are $1.02\pm 0.19{\text{(stat)}}_{-0.18}^{+0.22}\text{(syst)}$ and $1.27_{-0.40}^{+0.44}{\text{(stat)}}_{-0.21}^{+0.30}\text{(syst)}$, respectively. At $\sqrt{s}=8$ TeV, the total production cross sections are measured to be $\sigma (gg\to$ $H\to W{W}^{\ast })=4.6\pm 0.9\text{(stat)}{}_{-0.7}^{+0.8}\text{(syst)}\text{pb}$ and $\sigma (\text{VBF}$ $H\to W{W}^{\ast })=0.51{}_{-0.15}^{+0.17}\text{(stat)}{}_{-0.08}^{+0.13}\text{(syst)}\text{pb}$. The fiducial cross section is determined for the gluon-fusion process in exclusive final states with zero or one associated jet.

Published version, 69 pages plus author list + cover pages (83 pages total), 47 figures, 30 tables, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-13/

References in corpus (35)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• PYTHIA 6.4 Physics and Manual
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Parton distributions for the LHC
• New parton distributions for collider physics
• Event generation with SHERPA 1.1
• An NNLO subtraction formalism in hadron collisions and its application to Higgs boson production at the LHC
• Vector boson pair production at the LHC
• Vector boson production at hadron colliders: a fully exclusive QCD calculation at NNLO
• Single-top Wt-channel production matched with parton showers using the POWHEG method
• Two-loop soft anomalous dimensions for single top quark associated production with a W- or H-
• Next-to-next-to-leading-order collinear and soft gluon corrections for t-channel single top quark production
• NNLL resummation for s-channel single top quark production
• Measurement of the properties of a Higgs boson in the four-lepton final state
• NLO Electroweak Corrections to Higgs Boson Production at Hadron Colliders
• Observation of the diphoton decay of the Higgs boson and measurement of its properties
• Electroweak and QCD corrections to Higgs production via vector-boson fusion at the LHC
• Parton Distributions for LO Generators
• Measurement of Higgs boson production and properties in the WW decay channel with leptonic final states
• Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons
• Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton-proton collision data
• Measurement of the Higgs boson mass from the $H\to \gamma \gamma$ and $H\to Z{Z}^{\ast }\to 4\ell$ channels with the ATLAS detector using 25 fb${}^{-1}$ of $pp$ collision data
• Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton-proton collision data
• Evidence for the 125 GeV Higgs boson decaying to a pair of tau leptons
• Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector
• Minimal Kinematic Constraints and MT2
• Measurement of the W Boson Mass with the D0 Detector
• Search for the standard model Higgs boson decaying to a W pair in the fully leptonic final state in pp collisions at sqrt(s) = 7 TeV
• Bounding the Higgs width at the LHC: complementary results from $H\to WW$
• Search for the Standard Model Higgs boson in the H -> WW(*) -> l nu l nu decay mode with 4.7 /fb of ATLAS data at sqrt(s) = 7 TeV
• Higgs CAT
• Interference effects for H --> WW/ZZ --> l anti-nu_l anti-l nu_l searches in gluon fusion at the LHC
• Measurement of the $W$ boson mass with the D0 detector
• A precise measurement of the $W$-boson mass with the Collider Detector at Fermilab

Cited by in corpus (135)

• Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC $pp$ collision data at $\sqrt{s}=$ 7 and 8 TeV
• Performance of pile-up mitigation techniques for jets in $pp$ collisions at $\sqrt{s}=8$ TeV using the ATLAS detector
• Observation of Higgs boson decay to bottom quarks
• Measurements of the Higgs boson production and decay rates and coupling strengths using $pp$ collision data at $\sqrt{s}=7$ and $8$ TeV in the ATLAS experiment
• Applying Exclusion Likelihoods from LHC Searches to Extended Higgs Sectors
• Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector
• Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector
• HiggsSignals-2: Probing new physics with precision Higgs measurements in the LHC 13 TeV era
• $W^{\pm }Z$ production at the LHC: fiducial cross sections and distributions in NNLO QCD
• Electroweak precision observables and Higgs-boson signal strengths in the Standard Model and beyond: present and future
• Search for charged Higgs bosons decaying via $H^{\pm }\to {\tau }^{\pm }\nu$ in fully hadronic final states using $pp$ collision data at $\sqrt{s}=8$ TeV with the ATLAS detector
• Cross-section measurements of the Higgs boson decaying into a pair of tau-leptons in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Constraints on the off-shell Higgs boson signal strength in the high-mass $ZZ$ and $WW$ final states with the ATLAS detector
• Search for electroweak production of supersymmetric states in scenarios with compressed mass spectra at $\sqrt{s}=13$ TeV with the ATLAS detector
• $W^{+}{W}^{-}$ production at the LHC: fiducial cross sections and distributions in NNLO QCD
• Higgs production in association with a top-antitop pair in the Standard Model Effective Field Theory at NLO in QCD
• Evidence for the Higgs boson decay to a bottom quark-antiquark pair
• Current and future constraints on Higgs couplings in the nonlinear Effective Theory
• Search for heavy resonances decaying into $WW$ in the $e\nu \mu \nu$ final state in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Search for a high-mass Higgs boson decaying to a $W$ boson pair in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Measurements of properties of the Higgs boson decaying to a W boson pair in pp collisions at $\sqrt{s}=$ 13 TeV
• Global constraints on anomalous triple gauge couplings in effective field theory approach
• Higgs coupling measurements at the LHC
• Search for top-squark pair production in final states with one lepton, jets, and missing transverse momentum using 36 fb${}^{-1}$ of $\sqrt{s}=13$ TeV $pp$ collision data with the ATLAS detector
• Search for invisible decays of a Higgs boson using vector-boson fusion in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Search for the electroweak production of supersymmetric particles in $\sqrt{s}$=8 TeV $pp$ collisions with the ATLAS detector
• Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector
• Measurements of gluon-gluon fusion and vector-boson fusion Higgs boson production cross-sections in the $H\to W{W}^{\ast }\to e\nu \mu \nu$ decay channel in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Measurement of total and differential $W^{+}{W}^{-}$ production cross sections in proton-proton collisions at $\sqrt{s}=$ 8 TeV with the ATLAS detector and limits on anomalous triple-gauge-boson couplings
• Fundamental Composite Electroweak Dynamics: Status at the LHC
• Next-to-leading-order electroweak corrections to $pp\to W^{+}{W}^{-}\to$ 4 leptons at the LHC
• Search for invisible Higgs-boson decays in events with vector-boson fusion signatures using 139 ${\text{fb}}^{-1}$ of proton-proton data recorded by the ATLAS experiment
• Measurement of the double-differential high-mass Drell-Yan cross section in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Search for top squarks in final states with one isolated lepton, jets, and missing transverse momentum in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Performance of algorithms that reconstruct missing transverse momentum in $\sqrt{s}=$ 8 TeV proton-proton collisions in the ATLAS detector
• Constraining Sterile Neutrinos from Precision Higgs Data
• Jet-vetoed Higgs cross section in gluon fusion at N3LO+NNLL with small-R resummation
• Direct and indirect constraints on CP-violating Higgs-quark and Higgs-gluon interactions
• Physics at a 100 TeV pp collider: Higgs and EW symmetry breaking studies
• Effective field theory approach to LHC Higgs data
• Measurement of fiducial and differential $W^{+}{W}^{-}$ production cross-sections at $\sqrt{s}=$13 TeV with the ATLAS detector
• Search for invisible Higgs boson decays in vector boson fusion at $\sqrt{s}=13$ TeV with the ATLAS detector
• Study of $(W/Z)H$ production and Higgs boson couplings using $H\to W{W}^{\ast }$ decays with the ATLAS detector
• Anatomy of Exotic Higgs Decays in 2HDM
• NLO Corrections to Double Higgs Production in the Higgs Singlet Model
• A search for the standard model Higgs boson decaying to charm quarks
• Test of CP invariance in vector-boson fusion production of the Higgs boson in the $H\to \tau \tau$ channel in proton$-$proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• $B$-meson anomalies and Higgs physics in flavored $U(1{)}^{\prime }$ model
• Hierarchical vs Degenerate 2HDM: The LHC Run 1 Legacy at the Onset of Run 2
• Global fits in the Georgi-Machacek model
• Constraints on non-Standard Model Higgs boson interactions in an effective Lagrangian using differential cross sections measured in the $H\to \gamma \gamma$ decay channel at $\sqrt{s}=8$ TeV with the ATLAS detector
• Search for invisible decays of the Higgs boson produced in association with a hadronically decaying vector boson in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Three Loop Neutrino Model with Isolated $k^{\pm \pm }$
• LHC 750 GeV Diphoton excess in a radiative seesaw model
• Showcasing HH production: Benchmarks for the (HL-)LHC
• Search for a very light NMSSM Higgs boson produced in decays of the 125 GeV scalar boson and decaying into tau leptons in pp collisions at sqrt(s) = 8 TeV
• Two Higgs doublet model with vectorlike leptons and contributions to $pp\to WW$ and $H\to WW$
• Wgamma and Zgamma production at the LHC in NNLO QCD
• Higgs pair productions in the CP-violating two-Higgs-doublet model
• Search for Higgs boson decay to a charm quark-antiquark pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• A deep neural network for simultaneous estimation of b jet energy and resolution
• $W^{+}{W}^{-}$ production at the LHC: NLO QCD corrections to the loop-induced gluon fusion channel
• Measurement of fiducial differential cross sections of gluon-fusion production of Higgs bosons decaying to $W{W}^{\ast }\to e\nu \mu \nu$ with the ATLAS detector at $\sqrt{s}=8$ TeV
• Anatomy of the Higgs fits: a first guide to statistical treatments of the theoretical uncertainties
• Measurement of the production cross section for a Higgs boson in association with a vector boson in the $H\to W{W}^{\ast }\to \ell \nu \ell \nu$ channel in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• The role of MSSM heavy Higgs production in the self coupling measurement of the 125 GeV Higgs boson at the LHC
• Higgs decay into a lepton pair and a photon revisited
• Collider Constraints and Prospects of a Scalar Singlet Extension to Higgs Portal Dark Matter
• Status of MSSM Higgs Sector using Global Analysis and Direct Search Bounds, and Future Prospects at the HL-LHC
• Measurement of the transverse momentum spectrum of the Higgs boson produced in pp collisions at sqrt(s) = 8 TeV using H to WW decays
• AdS/QCD approach to the scale-invariant extension of the standard model with a strongly interacting hidden sector
• Determination of spin and parity of the Higgs boson in the $W{W}^{\ast }\to e\nu \mu \nu$ decay channel with the ATLAS detector
• $W^{+}{W}^{-}$ production at NNLO+PS with MiNNLO${}_{\mathrm{PS}}$
• Observation of electroweak production of two jets in association with an isolated photon and missing transverse momentum, and search for a Higgs boson decaying into invisible particles at 13 TeV with the ATLAS detector
• Phenomenological analysis of Higgs boson production through gluon fusion in association with jets
• Higgs Boson Decay to Light Jets at the LHC
• The correlation matrix of Higgs rates at the LHC
• Self-interacting dark matter and cosmology of a light scalar mediator
• Probing the Hidden Higgs Bosons of the $Y=0$ Triplet- and Singlet-Extended Supersymmetric Standard Model at the LHC
• Nanosecond anomaly detection with decision trees and real-time application to exotic Higgs decays
• Detection prospects of light NMSSM Higgs pseudoscalar via cascades of heavier scalars from vector boson fusion and Higgs-strahlung
• The cancellation mechanism in the predictions of electric dipole moments
• Effective Higgs Lagrangian and Constraints on Higgs Couplings
• General Analysis of the Charged Higgs Sector of the $Y=0$ Triplet-Singlet Extension of the MSSM at the LHC
• Updated constraints on Georgi-Machacek model, and its electroweak phase transition and associated gravitational waves
• Measurements of Higgs boson production by gluon-gluon fusion and vector-boson fusion using $H\to W{W}^{\ast }\to e\nu \mu \nu$ decays in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• New Physics Scale from Higgs Observables with Effective Dimension-6 Operators
• Updated global fit of the aligned two-Higgs-doublet model with heavy scalars
• NNLO QCD corrections to weak boson fusion Higgs boson production in the $H\to b\bar{b}$ and $H\to W{W}^{\ast }\to 4l$ decay channels
• Cornering dimension-6 $HVV$ interactions at high luminosity LHC: the role of event ratios
• Minimal Vectorlike Model in Supersymmetric Unification
• Light Stop Mass Limits from Higgs Rate Measurements in the MSSM: Is MSSM Electroweak Baryogenesis Still Alive After All?
• Probing the NMSSM via Higgs boson signatures from stop cascade decays at the LHC
• Enhancing the Higgs associated production with a top quark pair
• Current status of MSSM Higgs sector with LHC 13 TeV data
• Higgs boson couplings: measurements and theoretical interpretation
• Search for decays of the 125 GeV Higgs boson into a Z boson and a $\rho$ or $\varphi$ meson
• Future prospects of mass-degenerate Higgs bosons in the $CP$-conserving two-Higgs-doublet model
• Non-standard charged Higgs decay at the LHC in Next-to-Minimal Supersymmetric Standard Model
• Measurement of simplified template cross sections of the Higgs boson produced in association with W or Z bosons in the H $\to$ $\mathrm{b}\bar{\mathrm{b}}$ decay channel in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Further study of the global minimum constraint on the two-Higgs-doublet models: LHC searches for heavy Higgs bosons
• Measurement of $W^{+}{W}^{-}$ production in association with one jet in proton--proton collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Prospects for higgsino-singlino dark matter detection at IceCube and PINGU
• Reconstructing the invisible with matrix elements
• $W^{+}{W}^{-}$ + 3 Jet Production at the Large Hadron Collider in NLO QCD
• Complementarity of LHC and EDMs for Exploring Higgs CP Violation
• Single and Double SM-like Higgs Boson Production at Future Electron-Positron Colliders in C2HDMs
• Least Fine-Tuned U(1) Extended SSM
• Charged Higgs in MSSM and Beyond
• Lepton flavor violating Higgs decay at $e^{+}{e}^{-}$ colliders
• Higgs-Precision Constraints on Colored Naturalness
• Investigating the Quantum Properties of Jets and the Search for a Supersymmetric Top Quark Partner with the ATLAS Detector
• Dark Matter in Leptophilic Higgs Models After the LHC Run-I
• Perspectives on a Supersymmetric Extension of the Standard Model with a $Y=0$ Higgs Triplet and a Singlet at the LHC
• Higgs couplings and BSM physics: Run I Legacy constraints
• Lepton flavor-violating decays of the Higgs boson from sgoldstino mixing
• Status of the 98 - 125 GeV Higgs scenario with updated LHC-8 data
• Vector Boson Fusion versus Gluon Fusion
• Flavor from the Electroweak Scale
• Integrated and differential fiducial cross-section measurements for the vector boson fusion production of the Higgs boson in the $H\to W{W}^{\ast }\to e\nu \mu \nu$ decay channel at 13 $\text{TeV}$ with the ATLAS detector
• Stitching Monte Carlo samples
• The 28 GeV Dimuon Excess in Lepton Specific 2HDM
• Bounds on the Conformal Scale of a Minimally Coupled Dilaton and Multi-Leptonic Signatures at the LHC
• $HZ\gamma$ production at $14\mathrm{TeV}$ LHC in next-to-leading order QCD
• Particle Physics after the Higgs-Boson Discovery: Opportunities for the Large Hadron Collider
• Simultaneous probe of the charm and bottom quark Yukawa couplings using $\mathrm{t}\bar{\mathrm{t}}$H events
• Status after the first LHC run: Looking for new directions in the physics landscape
• Measurement of Higgs-boson self-coupling with single-Higgs and double-Higgs production channels
• Radiative corrections of heavy scalar decays to gauge bosons in the singlet extension of the Standard Model
• $\mathcal{O}$(1) GeV dark matter in SUSY and a very light pseudoscalar at the LHC
• Future Colliders Symposium in Hong Kong: Scientific Overview
• Exploring anomalous $hb\bar{b}$ and $hb\bar{b}\gamma$ couplings in the context of the LHC and an $e^{+}{e}^{-}$ collider
• Studies on Conformal and Superconformal Extensions of the Standard Model with an Application to Gravity
• $CP$-odd form factor in the $HWW$ vertex
• Charged Higgs bosons in the extended supersymmetric scenario at the LHC