Search for Minimal Supersymmetric Standard Model Higgs bosons H/A and for a Z boson in the ττ final state produced in pp collisions at √ s = 13 TeV with the ATLAS Detector

Article, Preprint English OPEN
Aaboud, M. et al. (ATLAS Collaboration) (2016)
  • Publisher: Springer Nature
  • Journal: (issn: 1434-6052)
  • Related identifiers: doi: 10.1140/epjc/s10052-016-4400-6
  • Subject: scattering [p p] | Subatomic Physics | branching ratio: upper limit [cross section] | ATLAS | mass dependence | Engineering (miscellaneous) | doublet [Higgs particle] | hadroproduction [Higgs particle] | Higgs bosons; Z boson, pp collisions; ATLAS Detector | QC | 530 | mass [boson] | High Energy Physics - Experiment | Settore FIS/04 - Fisica Nucleare e Subnucleare | heavy [resonance] | leptonic decay [resonance] | CERN LHC Coll | p p: colliding beams ; Higgs particle: hadroproduction ; Higgs particle: doublet ; tau: pair production ; boson: mass ; minimal supersymmetric standard model: parameter space ; cross section: branching ratio: upper limit ; boson: leptonic decay ; resonance: heavy ; resonance: leptonic decay ; flavor: model ; p p: scattering ; mass dependence ; ATLAS ; CERN LHC Coll ; background ; benchmark ; experimental results ; 13000 GeV-cms | model [flavor] | pair production [tau] | experimental results | /dk/atira/pure/researchoutput/pubmedpublicationtype/D016428 | Subatomär fysik | 13000 GeV-cms | benchmark | Science & Technology | leptonic decay [boson] | Settore FIS/01 - Fisica Sperimentale | background | colliding beams [p p] | Journal Article | Engineering (miscellaneous); Physics and Astronomy (miscellaneous) | parameter space [minimal supersymmetric standard model] | Physics and Astronomy (miscellaneous)
    • ddc: ddc:500.2 | ddc:530

A search for neutral Higgs bosons of the minimal supersymmetric standard model (MSSM) and for a heavneutral Z′ boson is performed using a data sample corresponding to an integrated luminosity of 3.2 fb−1 from proton–proton collisions at s√=13 TeV recorded by the ATLAS detector at the LHC. The heavy resonance is assumed to decay to a τ+τ− pair with at least one τ lepton decaying to final states with hadrons and a neutrino. The search is performed in the mass range of 0.2–1.2 TeV for the MSSM neutral Higgs bosons and 0.5–2.5 TeV for the heavy neutral Z′ boson. The data are in good agreement with the background predicted by the Standard Model. The results are interpreted in MSSM and Z′ benchmark scenarios. The most stringent constraints on the MSSM mA–tanβ space exclude at 95 % confidence level (CL) tanβ>7.6 for mA=200 GeV in the mmod+h MSSM scenario. For the Sequential Standard Model, a Z′SSM mass up to 1.90 TeV is excluded at 95 % CL and masses up to 1.82–2.17 TeV are excluded for a Z′SFM of the strong flavour model. 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; 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 Sklodowska-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; 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 (Spa
  • References (209)
    209 references, page 1 of 21

    1. ATLAS Collaboration, Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC. Phys. Lett. B 716, 1 (2012). arXiv:1207.7214 [hep-ex]

    2. CMS Collaboration, Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC. Phys. Lett. B 716, 30 (2012). arXiv:1207.7235 [hep-ex]

    3. ATLAS Collaboration, Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector. Eur. Phys. J. C 75, 476 (2015). arXiv:1506.05669 [hep-ex]

    4. ATLAS Collaboration, Measurements of the Higgs boson production and decay rates and coupling strengths using pp collision data at √s = 7 and 8 TeV in the ATLAS experiment. Eur. Phys. J. C 76, 6 (2016). arXiv:1507.04548 [hep-ex]

    5. C.M.S. Collaboration, Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 TeV. Eur. Phys. J. C 75, 212 (2015). arXiv:1412.8662 [hep-ex]

    6. C.M.S. Collaboration, Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV. Phys. Rev. D 92, 012004 (2015). arXiv:1411.3441 [hep-ex]

    7. ATLAS and CMS Collaborations, Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC pp collision data at √s = 7 and 8 TeV (2015). http://cdsweb.cern.ch/ record/2052552

    8. F. Englert, R. Brout, Broken symmetry and the mass of gauge vector mesons. Phys. Rev. Lett. 13, 321 (1964)

    9. P.W. Higgs, Broken symmetries, massless particles and gauge fields. Phys. Lett. 12, 132 (1964)

    10. P.W. Higgs, Broken symmetries and the masses of gauge bosons. Phys. Rev. Lett. 13, 508 (1964)

  • Related Research Results (2)
  • Metrics
    No metrics available