Search for a multi-Higgs-boson cascade in WWbb events with the ATLAS detector in pp collisions at sqrt(s) = 8 TeV
arXiv:1312.1956 · doi:10.1103/PhysRevD.89.032002
Abstract
A search is presented for new particles in an extension to the Standard Model that includes a heavy Higgs boson H0, an intermediate charged Higgs boson pair H+-, and a light Higgs boson h0. The analysis searches for events involving the production of a single heavy neutral Higgs boson which decays to the charged Higgs boson and a W boson, where the charged Higgs boson subsequently decays into a W boson and the lightest neutral Higgs boson decaying to a bottom--antibottom-quark pair. Such a cascade results in a W-boson pair and a bottom--antibottom-quark pair in the final state. Events with exactly one lepton, missing transverse momentum, and at least four jets are selected from a data sample corresponding to an integrated luminosity of 20.3/fb, collected by the ATLAS detector in proton--proton collisions at sort(s)=8 TeV at the LHC. The data are found to be consistent with Standard Model predictions, and 95% confidence-level upper limits are set on the product of cross section and branching ratio. These limits range from 0.065 pb to 43 pb as a function of H0 and H+- masses, with m(h0) fixed at 125 GeV.
11 pages plus author list (25 pages total), 6 figures, 4 tables, submitted to PRD, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-04/
References in corpus (16)
- 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
- Parton distributions for the LHC
- Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
- New parton distributions for collider physics
- Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
- 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
- SusHi: A program for the calculation of Higgs production in gluon fusion and bottom-quark annihilation in the Standard Model and the MSSM
- Light scalar at LHC: the Higgs or the dilaton?
- Parton Distributions for LO Generators
- Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in Higgs boson searches at the Tevatron
- Search for charged Higgs bosons decaying via H+ -> tau nu in top quark pair events using pp collision data at sqrt(s) = 7 TeV with the ATLAS detector
- Efficient Identification of Boosted Semileptonic Top Quarks at the LHC
Cited by in corpus (11)
- Searching for Exotic Particles in High-Energy Physics with Deep Learning
- Parameterized Machine Learning for High-Energy Physics
- Naturalness in Type II seesaw model and implications for physical scalars
- Model-independent Probe of anomalous heavy neutral Higgs bosons at the LHC
- Machine learning techniques in searches for in the decay channel
- Lessons for SUSY from the LHC after the first run
- Hadron Collider Searches for Diboson Resonances
- Improving estimates of the number of fake leptons and other mis-reconstructed objects in hadron collider events: BoB's your UNCLE. (Previously "The Matrix Method Reloaded")
- Charged-Higgs production in the Two-Higgs-Doublet Model --- the τνchannel
- Probing gauge-phobic heavy Higgs bosons at high energy hadron colliders
- Importance and construction of features in identifying new physics signals with deep learning