Boosted Higgs $\to b\bar{b}$ in vector-boson associated production at 14 TeV

Abstract

The production of the Standard Model Higgs boson in association with a vector boson, followed by the dominant decay to $H\to b\bar{b}$, is a strong prospect for confirming and measuring the coupling to $b$-quarks in $pp$ collisions at $\sqrt{s}=14$ TeV. We present an updated study of the prospects for this analysis, focussing on the most sensitive highly Lorentz-boosted region. The evolution of the efficiency and composition of the signal and main background processes as a function of the transverse momentum of the vector boson are studied covering the region $200-1000$ GeV, comparing both a conventional dijet and jet substructure selection. The lower transverse momentum region ($200-400$ GeV) is identified as the most sensitive region for the Standard Model search, with higher transverse momentum regions not improving the statistical sensitivity. For much of the studied region ($200-600$ GeV), a conventional dijet selection performs as well as the substructure approach, while for the highest transverse momentum regions ($>600$ GeV), which are particularly interesting for Beyond the Standard Model and high luminosity measurements, the jet substructure techniques are essential.

13 pages.(Fixed figure layout error)

References in corpus (11)

• 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
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Herwig++ Physics and Manual
• Jet substructure as a new Higgs search channel at the LHC
• Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations
• Single-top hadroproduction in association with a W boson
• Search for the $b\bar{b}$ decay of the Standard Model Higgs boson in associated $(W/Z)H$ production with the ATLAS detector
• Associated ZH production at hadron colliders: the fully differential NNLO QCD calculation
• Multivariate discrimination and the Higgs + W/Z search
• Measurements of normalized differential cross-sections for ttbar production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector

Cited by in corpus (13)

• Electroweak Precision Tests in High-Energy Diboson Processes
• Higgs Physics: It ain't over till it's over
• Precision Measurement with Diboson at the LHC
• Measuring the Higgs-bottom coupling in weak boson fusion
• Giving top quark effective operators a boost
• Higgs Boson Decay to Light Jets at the LHC
• Resolving Boosted Jets with XCone
• New physics and signal-background interference in associated $pp\to HZ$ production
• A New Precision Process at FCC-hh: the diphoton leptonic Wh channel
• Role of the $Z$ polarization in the $H\to b\bar{b}$ measurement
• Identification of a bottom quark-antiquark pair in a single jet with high transverse momentum and its application
• Top quark physics in the Large Hadron Collider era
• Inclusive production of X$\to b\bar{b}$ plus a recoil for the LHC Run-II