Search for Minimal Supersymmetric Standard Model Higgs bosons $H/A$ and for a $Z^{\prime }$ boson in the $\tau \tau$ final state produced in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS Detector

Abstract

A search for neutral Higgs bosons of the Minimal Supersymmetric Standard Model (MSSM) and for a heavy neutral $Z^{\prime }$ boson is performed using a data sample corresponding to an integrated luminosity of 3.2 fb${}^{-1}$ from proton--proton collisions at $\sqrt{s}=13$ TeV recorded by the ATLAS detector at the LHC. The heavy resonance is assumed to decay to a ${\tau }^{+}{\tau }^{-}$ pair with at least one $\tau$ 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 $Z^{\prime }$ boson. The data are in good agreement with the background predicted by the Standard Model and hence results are given as upper limits on the production cross section times branching fraction of the boson decay to ${\tau }^{+}{\tau }^{-}$ as a function of the boson mass. The results are interpreted in MSSM and $Z^{\prime }$ benchmark scenarios. The most stringent MSSM parameter space constraints for the Higgs boson search exclude at 95\% confidence level (CL) $\tan \beta >7.6$ for $m_A=200$ GeV in the $m_h^{\text{mod+}}$ MSSM scenario. This analysis extends the MSSM limits from previous searches for the mass range $m_A>500$ GeV. For the Sequential Standard Model, a $Z_{\mathrm{SSM}}^{\prime }$ mass up to 1.90 TeV is excluded at 95% CL and masses up to 1.82--2.17 TeV are excluded for a $Z_{\mathrm{SFM}}^{\prime }$ of the Strong Flavour Model.

28 pages plus author list + cover pages (46 pages total), 6 figures, 3 tables, published in European Physical Journal C. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2015-08/

References in corpus (38)

• 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
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• Parton distributions for the LHC
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• New parton distributions for collider physics
• Event generation with SHERPA 1.1
• Herwig++ Physics and Manual
• Pileup subtraction using jet areas
• Two-loop soft anomalous dimensions for single top quark associated production with a W- or H-
• 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
• -- HATHOR -- HAdronic Top and Heavy quarks crOss section calculatoR
• Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations
• Search for Neutral MSSM Higgs Bosons at LEP
• Electroweak gauge boson production at hadron colliders through O(alpha_s^2)
• FEWZ 2.0: A code for hadronic Z production at next-to-next-to-leading order
• 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
• Measurement of the $Z/{\gamma }^{\ast }$ boson transverse momentum distribution in $pp$ collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector
• HATHOR for single top-quark production: Updated predictions and uncertainty estimates for single top-quark production in hadronic collisions
• Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data
• Search for neutral MSSM Higgs bosons decaying to a pair of tau leptons in pp collisions
• Heavy-quark mass dependence in global PDF analyses and 3- and 4-flavour parton distributions
• Search for neutral Higgs bosons of the minimal supersymmetric standard model in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Pileup subtraction for jet shapes
• Higgs production in association with bottom quarks
• Identification and energy calibration of hadronically decaying tau leptons with the ATLAS experiment in $pp$ collisions at $\sqrt{s}$=8 TeV
• On the Generalized Harmonic Polylogarithms of One Complex Variable
• Z' Phenomenology and the LHC
• NLO QCD bottom corrections to Higgs boson production in the MSSM
• On the NLO QCD corrections to the production of the heaviest neutral Higgs scalar in the MSSM
• Discovery and Identification of W' and Z' in SU(2) x SU(2) x U(1) Models at the LHC
• Search for Higgs bosons decaying to tau pairs in ppbar collisions with the D0 detector
• Search for high-mass resonances decaying into tau-lepton pairs in pp collisions at sqrt(s) = 7 TeV
• Unravelling an Extra Neutral Gauge Boson at the LHC using Third Generation Fermions

Cited by in corpus (4)

• Search for additional heavy neutral Higgs and gauge bosons in the ditau final state produced in 36 fb${}^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Search for heavy Higgs bosons $A/H$ decaying to a top quark pair in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Study of the rare decays $B_{(}s,d{)}^{\ast }$ arrow $l^{+}{l}^{-}$ in Z' model
• Analysis of ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ rare decays in a non-universal $Z^{\prime }$ model