Search for a multi-Higgs-boson cascade in W(+)W(-)b(b)over-bar events with the ATLAS detector in pp collisions at root s=8 TeV
Popovic, D. S.
Vranješ Milosavljević, Marija
ATLAS Collaboration (ukupan broj autora: 2936)
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A search is presented for new particles in an extension to the Standard Model that includes a heavy Higgs boson (H-0), an intermediate charged Higgs-boson pair (H-+/-), and a light Higgs boson (h(0)). 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(-1), collected by the ATLAS detector in proton-proton collisions at root 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 sec...tion and branching ratio. These limits range from 0.065 to 43 pb as a function of H-0 and H-+/- masses, with m(h)o fixed at 125 GeV.
Извор:Physical Review D, 2014, 89, 3
- ANPCyT, Argentina, YerPhI, Armenia, ARC, Australia, BMWF and FWF, Austria, ANAS, Azerbaijan, SSTC, Belarus, CNPq and FAPESP, Brazil, NSERC, NRC and CFI, Canada, CERN, CONICYT, Chile, CAS, MOST and NSFC, China, COLCIENCIAS, Colombia, MSMT CR, MPO CR and VSC CR, Czech Republic, DNRF, DNSRC and Lundbeck Foundation, Denmark, EPLANET, ERC and NSRF, European Union, IN2P3-CNRS, CEA-DSM/IRFU, France, GNSF, Georgia, BMBF, DFG, HGF, MPG and AvH Foundation, Germany, GSRT and NSRF, Greece, ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel, INFN, Italy, MEXT and JSPS, Japan, CNRST, Morocco, FOM and NWO, Netherlands, BRF and RCN, Norway, MNiSW and NCN, Poland, GRICES and FCT, Portugal, MNE/IFA, Romania, MES of Russia and ROSATOM, Russian Federation, JINR, MSTD, Serbia, MSSR, Slovakia, ARRS and MIZS, Slovenia, DST/NRF, South Africa, MINECO, Spain, SRC and Wallenberg Foundation, Sweden, SER, SNSF and Cantons of Bern and Geneva, Switzerland, NSC, Taiwan, TAEK, Turkey, STFC, the Royal Society and Leverhulme Trust, United Kingdom, DOE and NSF, United States of America, ICREA
ISSN: 1550-7998 (print); 1550-2368 (electronic)