A search for the production of heavy partners of the top quark with charge 5/3 (X5/3) decaying into a top quark and a W boson is performed with a data sample corresponding to an integrated luminosity of 2.3 fb−1, collected in proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector at the CERN LHC. Final states with either a pair of same-sign leptons or a single lepton, along with jets, are considered. No significant excess is observed in the data above the expected standard model background contribution and an X5/3 quark with right-handed (left-handed) couplings is excluded at 95% confidence level for masses below 1020 (990) GeV. These are the first limits based on a combination of the same-sign dilepton and the single-lepton final states, as well as the most stringent limits on the X5/3 mass to date.[Figure not available: see fulltext.].

Search for top quark partners with charge 5/3 in proton-proton collisions at √s=13 TeV / The CMS, C., Sirunyan, A.M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., Brandstetter, J., Brondolin, E., Dragicevic, M., Ero, J., Flechl, M., Friedl, M., Fruhwirth, R., Ghete, V.M., Hartl, C., Hormann, N., Hrubec, J., Jeitler, M., Konig, A., Kratschmer, I., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - ELETTRONICO. - 2017:8(2017). [10.1007/JHEP08(2017)073]

Search for top quark partners with charge 5/3 in proton-proton collisions at √s=13 TeV

Creanza D.;De Filippis N.;Iaselli G.;Maggi G.;Pugliese G.;
2017

Abstract

A search for the production of heavy partners of the top quark with charge 5/3 (X5/3) decaying into a top quark and a W boson is performed with a data sample corresponding to an integrated luminosity of 2.3 fb−1, collected in proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector at the CERN LHC. Final states with either a pair of same-sign leptons or a single lepton, along with jets, are considered. No significant excess is observed in the data above the expected standard model background contribution and an X5/3 quark with right-handed (left-handed) couplings is excluded at 95% confidence level for masses below 1020 (990) GeV. These are the first limits based on a combination of the same-sign dilepton and the single-lepton final states, as well as the most stringent limits on the X5/3 mass to date.[Figure not available: see fulltext.].
2017
Search for top quark partners with charge 5/3 in proton-proton collisions at √s=13 TeV / The CMS, C., Sirunyan, A.M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., Brandstetter, J., Brondolin, E., Dragicevic, M., Ero, J., Flechl, M., Friedl, M., Fruhwirth, R., Ghete, V.M., Hartl, C., Hormann, N., Hrubec, J., Jeitler, M., Konig, A., Kratschmer, I., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - ELETTRONICO. - 2017:8(2017). [10.1007/JHEP08(2017)073]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/209675
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