Search for minimal supersymmetric standard model Higgs Bosons H / A and for a Z^' } boson in the τ τ final state produced in pp collisions at √{s}= 13 TeV with the ATLAS detector

ATLAS COLL., M.AABOUD ET AL.; M. T. DOVA

EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS

SPRINGER

Año: 2016

1434-6044

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 m_A-tan β space exclude at 95 % confidence level (CL) tan β > 7.6 for m_A = 200 {GeV} in the mh^{ {mod+}} 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.