Search for Heavy Higgs Bosons A/H Decaying to a Top Quark Pair in pp Collisions at √s=8 TeV with the ATLAS Detector
| dc.contributor.author | Aaboud, M. | |
| dc.contributor.author | Albert, Justin | |
| dc.contributor.author | Chiu, Y. H. | |
| dc.contributor.author | Elliot, Alison A. | |
| dc.contributor.author | Fincke-Keeler, J. | |
| dc.contributor.author | Hamano, Kenji | |
| dc.contributor.author | Hill, Ewan Chin | |
| dc.contributor.author | Keeler, Richard | |
| dc.contributor.author | Kowalewski, Robert | |
| dc.contributor.author | Kuwertz, E. S. | |
| dc.contributor.author | Kwan, Tony | |
| dc.contributor.author | LeBlanc, Matthew Edgar | |
| dc.contributor.author | Lefebvre, Michel | |
| dc.contributor.author | McPherson, Robert A. | |
| dc.contributor.author | Seuster, Rolf | |
| dc.contributor.author | Sobie, Randall J. | |
| dc.contributor.author | Trovatelli, M. | |
| dc.contributor.author | Venturi, M. | |
| dc.contributor.author | ATLAS Collaboration | |
| dc.date.accessioned | 2020-02-18T18:14:03Z | |
| dc.date.available | 2020-02-18T18:14:03Z | |
| dc.date.copyright | 2017 | en_US |
| dc.date.issued | 2017 | |
| dc.description.abstract | A search for heavy pseudoscalar (A) and scalar (H) Higgs bosons decaying into a top quark pair (t¯t) has been performed with 20.3 fb−1 of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a center-of-mass energy √s=8 TeV. Interference effects between the signal process and standard model t¯t production, which are expected to distort the signal shape from a single peak to a peak-dip structure, are taken into account. No significant deviation from the standard model prediction is observed in the t¯t invariant mass spectrum in final states with an electron or muon, large missing transverse momentum, and at least four jets. The results are interpreted within the context of a type-II two-Higgs-doublet model. Exclusion limits on the signal strength are derived as a function of the mass mA/H and the ratio of the vacuum expectation values of the two Higgs fields, tanβ, for mA/H>500 GeV. | en_US |
| dc.description.reviewstatus | Reviewed | en_US |
| dc.description.scholarlevel | Faculty | en_US |
| dc.description.sponsorship | We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of 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 and DNSRC, Denmark; IN2P3-CNRS, CEA-DSM/IRFU, France; SRNSF, 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; 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 MIZŠ, 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, ERDF, FP7, Horizon 2020 and Marie Skłodowska-Curie Actions, European Union; Investissements d’Avenir Labex and Idex, ANR, Région 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; CERCA Programme Generalitat de Catalunya, Generalitat Valenciana, Spain; the Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, 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 (UK) and BNL (USA), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref. [69]. | en_US |
| dc.identifier.citation | Aaboud, M.; Aad, G.; Abbott, B.; Abdinov, O.; Abeloos, B.; Abidi, S. H.; … & Zwalinski, L. (2017). Search for Heavy Higgs Bosons A/H Decaying to a Top Quark Pair in pp Collisions at √s=8 TeV with the ATLAS Detector. Physical Review Letters, 119(19), article 191803. DOI: 10.1103/PhysRevLett.119.191803 | en_US |
| dc.identifier.uri | https://doi.org/10.1103/PhysRevLett.119.191803 | |
| dc.identifier.uri | http://hdl.handle.net/1828/11574 | |
| dc.language.iso | en | en_US |
| dc.publisher | Physical Review Letters | en_US |
| dc.subject | Extensions of Higgs sector | |
| dc.subject | Hypothetical particle physics models | |
| dc.subject | Hypothetical scalars | |
| dc.subject | Top quark | |
| dc.subject | Hadron colliders | |
| dc.subject.department | Department of Physics and Astronomy | |
| dc.title | Search for Heavy Higgs Bosons A/H Decaying to a Top Quark Pair in pp Collisions at √s=8 TeV with the ATLAS Detector | en_US |
| dc.type | Article | en_US |