Search for charged Higgs bosons in the H± → tb decay channel in pp collisions at s√=8s=8 TeV using the ATLAS detector

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dc.contributor.author Amelung, Christoph
dc.contributor.author Amundsen, Glenn
dc.contributor.author Barone, Gaetano
dc.contributor.author Bensinger, James R.
dc.contributor.author Bianchini, Louis
dc.contributor.author Blocker, Craig
dc.contributor.author Coffey, Laurel
dc.contributor.author Dhaliwal, Saminder
dc.contributor.author Loew, Kevin
dc.contributor.author Sciolla, Gabriella
dc.contributor.author Venturini, Alessio
dc.contributor.author Zengel, Keith
dc.date.accessioned 2017-12-15T20:11:18Z
dc.date.available 2017-12-15T20:11:18Z
dc.date.issued 2016-03-17
dc.identifier.citation The ATLAS collaboration, Aad, G., Abbott, B. et al. J. High Energ. Phys. (2016) 2016: 127.
dc.identifier.issn 1126-6708
dc.identifier.issn 1029-8479
dc.identifier.uri http://hdl.handle.net/10192/35152
dc.description Published version can be found on the Journal of High Energy Physics' site: https://link.springer.com/article/10.1007%2FJHEP03%282016%29127#citeas
dc.description.abstract Charged Higgs bosons heavier than the top quark and decaying via H± → tb are searched for in proton-proton collisions measured with the ATLAS experiment at √s = 8 TeV corresponding to an integrated luminosity of 20.3 fb−1. The production of a charged Higgs boson in association with a top quark, gb → tH±, is explored in the mass range 200 to 600 GeV using multi-jet final states with one electron or muon. In order to separate the signal from the Standard Model background, analysis techniques combining several kinematic variables are employed. An excess of events above the backgroundonly hypothesis is observed across a wide mass range, amounting to up to 2.4 standard deviations. Upper limits are set on the gb → tH± production cross section times the branching fraction BR(H± → tb). Additionally, the complementary s-channel production, qq0 → H±, is investigated through a reinterpretation of W0 → tb searches in ATLAS. Final states with one electron or muon are relevant for H± masses from 0.4 to 2.0 TeV, whereas the all-hadronic final state covers the range 1.5 to 3.0 TeV. In these search channels, no significant excesses from the predictions of the Standard Model are observed, and upper limits are placed on the qq0 → H± production cross section times the branching fraction BR(H± → tb).
dc.description.sponsorship Supported by ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW 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; IN2P3-CNRS, CEADSM/IRFU, France; GNSF, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZS, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, United States of America. In addition, individual groups and members have received support from BCKDF, the Canada Council, CANARIE, CRC, Compute Canada, FQRNT, and the Ontario Innovation Trust, Canada; EPLANET, ERC, FP7, Horizon 2020 and Marie Sk lodowska-Curie Actions, European Union; Investissements d’Avenir Labex and Idex, ANR, Region Auvergne and Fondation Partager le Savoir, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF; BSF, GIF and Minerva, Israel; BRF, Norway; the Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN and the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (U.K.) and BNL (U.S.A.) and in the Tier-2 facilities worldwide.
dc.language English
dc.language.iso eng
dc.publisher Springer Verlag
dc.rights Copyright by CERN 2016
dc.subject Hadron-Hadron scattering
dc.subject Higgs physics
dc.subject ATLAS
dc.subject ATLAS detector
dc.title Search for charged Higgs bosons in the H± → tb decay channel in pp collisions at s√=8s=8 TeV using the ATLAS detector
dc.type Article
dc.identifier.doi https://doi.org/10.1007/JHEP03(2016)127


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