Search for Higgs boson pair production in the bbbb b b ¯ b b ¯ final state from pp collisions at √(s) = 8 s = 8 TeVwith the ATLAS detector

2015/06/30 by G. Aad, ATLAS Collaboration, B. Abbott +98 · 3 citations
Physics and Astronomy · #ATLAS experiment #Bar (unit) #Boson #Branching fraction #Gauge (firearms) #Higgs boson #High-Energy Particle Collisions Research #Large Hadron Collider #Nuclear physics #Pair production #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Quantum Chromodynamics and Particle Interactions #Standard Model (mathematical formulation) #hep-ex

paper · pdf · doi:10.1140/epjc/s10052-015-3628-x

published as Eur. Phys. J. C (2015) 75:412 · 32 pages plus author list + cover pages (49 pages total), 18 figures, 9 tables, submitted to EPJC. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2014-11/

openalex publication_date 2015/09/01 · arxiv created 2015/09/18 · arxiv updated 2015/09/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

A search for Higgs boson pair production pp hh is performed with 19.5 fb -1 of proton-proton collision data at s = 8 TeV, which were recorded by the ATLAS detector at the Large Hadron Collider in 2012. The decay products of each Higgs boson are reconstructed as a highmomentum b b system with either a pair of small-radius jets or a single large-radius jet, the latter exploiting jet substructure techniques and associated b-tagged track-jets. No evidence for resonant or non-resonant Higgs boson pair production is observed. The data are interpreted in the context of the Randall-Sundrum model with a warped extra dimension as well as the two-Higgs-doublet model. An upper limit on the cross-section for pp G * KK hh b bb b of 3.2 (2.3) fb is set for a Kaluza-Klein graviton G * KK mass of 1.0 (1.5) TeV, at the 95 % confidence level. The search for non-resonant Standard Model hh production sets an observed 95 % confidence level upper limit on the production cross-section ( pp hh b bb b) of 202 fb, compared to a Standard Model prediction of ( pp hh b bb b) = 3.6 0.5 fb.

Citations

• Standard model Higgs boson pair production in the ( b b ¯ bb )( b b ¯ bb ) final state
• Warped gravitons at the CERN LHC and beyond
• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Exclusive Higgs boson production with bottom quarks at hadron colliders
• On the Higgs boson pair production at the LHC
• Event generation with SHERPA 1.1
• Higgs boson production in bottom quark fusion at next-to-next-to-leading order
• Presentation of search results: theCLstechnique
• Next-to-Next-to-Leading Order Higgs Production at Hadron Colliders
• The anti-ktjet clustering algorithm
• Measurement of the properties of a Higgs boson in the four-lepton final state
• The catchment area of jets
• Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC
• NNLO corrections to top pair production at hadron colliders: the quark-gluon reaction
• Theory and phenomenology of two-Higgs-doublet models
• Bottom-quark associated Higgs-boson production: reconciling the four- and five-flavour scheme approach
• Performance of the ATLAS Trigger System in 2010
• A positive-weight next-to-leading-order Monte Carlo for heavy flavour hadroproduction
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Higgs radiation off bottom quarks at the Fermilab Tevatron and the CERN LHC

Cited by

• NLO-QCD corrections to Higgs pair production in the MSSM
• Search for resonant pair production of Higgs bosons decaying to two bottom quark–antiquark pairs in proton–proton collisions at 8 TeV
• Search for two Higgs bosons in final states containing two photons and two bottom quarks in proton-proton collisions at 8 TeV
• Constraints on the trilinear Higgs self coupling from precision observables