A search for neutral Higgs bosons of the minimal supersymmetric standard model (MSSM) and for a heavneutral Zâ² boson is performed using a data sample corresponding to an integrated luminosity of 3.2 fb- 1 from protonâproton collisions at s=13 TeV recorded by the ATLAS detector at the LHC. The heavy resonance is assumed to decay to a Ï+Ï- pair with at least one Ï lepton decaying to final states with hadrons and a neutrino. The search is performed in the mass range of 0.2â1.2 TeV for the MSSM neutral Higgs bosons and 0.5â2.5 TeV for the heavy neutral Zâ² boson. The data are in good agreement with the background predicted by the Standard Model. The results are interpreted in MSSM and Zâ² benchmark scenarios. The most stringent constraints on the MSSM mAâtan β space exclude at 95 % confidence level (CL) tan β> 7.6 for mA= 200 GeV in the mhmod+ MSSM scenario. For the Sequential Standard Model, a ZSSMâ² mass up to 1.90 TeV is excluded at 95 % CL and masses up to 1.82â2.17 TeV are excluded for a ZSFMâ² of the strong flavour model.
Search for minimal supersymmetric standard model Higgs Bosons HÂ /Â A and for a Zâ² boson in the ÏÏ final state produced in pp collisions at âs=13 TeV with the ATLAS detector
Amoroso, S.;Barbero, M.;Bellagamba, L.;Benitez, J.;Bona, M.;Cairo, V. M.;Callea, G.;Cao, T.;Capua, M.;Cardillo, F.;Carli, I.;Cavaliere, V.;Cerri, A.;Chen, H.;Chiarella, V.;Colombo, T.;Conti, G.;Crosetti, G.;David, C.;De Maria, A.;De Pedis, D.;Del Gaudio, M.;DeMarco, D. A.;Fabbri, L.;Farina, C.;Fischer, A.;Francis, D.;Gabrielli, A.;Gabrielli, A.;Glasman, C.;Iacobucci, G.;Iodice, M.;Jackson, B.;Rotonda, L. La;Le, B.;Li, C.;Li, S.;Liu, J.;Liu, L.;Liu, M.;Liu, M.;Liu, Y.;Lu, N.;Madaffari, D.;Mancini, G.;Martinez, M.;Mastroberardino, A.;Melo, M.;Meoni, E.;Merola, L.;Perini, L.;Petrucci, F.;Ragusa, F.;Rinaldi, L.;Sanchez, A.;Scarfone, V.;Schioppa, M.;Sessa, M.;Silva, J.;Simon, D.;Spagnolo, S.;Sun, S.;Susinno, G.;Tassi, E.;Terron, J.;Terzo, S.;Veneziano, S.;Wang, J.;Wang, J.;Wang, R.;Wang, W.;Youssef, S.;Zhang, L.;Zhang, R.;Zhang, R.;Zhou, B.;Zhou, M.;Zhu, J.;
2016-01-01
Abstract
A search for neutral Higgs bosons of the minimal supersymmetric standard model (MSSM) and for a heavneutral Zâ² boson is performed using a data sample corresponding to an integrated luminosity of 3.2 fb- 1 from protonâproton collisions at s=13 TeV recorded by the ATLAS detector at the LHC. The heavy resonance is assumed to decay to a Ï+Ï- pair with at least one Ï lepton decaying to final states with hadrons and a neutrino. The search is performed in the mass range of 0.2â1.2 TeV for the MSSM neutral Higgs bosons and 0.5â2.5 TeV for the heavy neutral Zâ² boson. The data are in good agreement with the background predicted by the Standard Model. The results are interpreted in MSSM and Zâ² benchmark scenarios. The most stringent constraints on the MSSM mAâtan β space exclude at 95 % confidence level (CL) tan β> 7.6 for mA= 200 GeV in the mhmod+ MSSM scenario. For the Sequential Standard Model, a ZSSMâ² mass up to 1.90 TeV is excluded at 95 % CL and masses up to 1.82â2.17 TeV are excluded for a ZSFMâ² of the strong flavour model.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.