Measuring CP nature of top-Higgs couplings at the future LargeHadron electron Collider

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dc.citation.doi10.1016/j.physletb.2017.05.006en_ZA
dc.citation.epage341en_ZA
dc.citation.spage335en_ZA
dc.contributor.authorColeppa, B.
dc.contributor.authorKumar, M.
dc.contributor.authorKumar, S.
dc.contributor.authorMellado, B.
dc.date.accessioned2017-11-17T15:02:57Z
dc.date.available2017-11-17T15:02:57Z
dc.date.issued2017-07
dc.description.abstractWe investigate the sensitivity of top-Higgs coupling by considering the associated vertex as CP phase (ζt) dependent through the process pe−→t¯hνe in the future Large Hadron electron Collider. In particular the decay modes are taken to be h→bb¯ and t¯ → leptonic mode. Several distinct ζt dependent features are demonstrated by considering observables like cross sections, top-quark polarisation, rapidity difference between h and t¯ and different angular asymmetries. Luminosity (L) dependent exclusion limits are obtained for ζt by considering significance based on fiducial cross sections at different σ-levels. For electron and proton beam-energies of 60 GeV and 7 TeV respectively, at L=100 fb−1, the regions above π/5<ζt≤π are excluded at 2σ confidence level, which reflects better sensitivity expected at the Large Hadron Collider. With appropriate error fitting methodology we find that the accuracy of SM top-Higgs coupling could be measured to be κ=1.00±0.17(0.08) at s=1.3(1.8) TeV for an ultimate L=1ab−1.en_ZA
dc.description.librarianEM2017en_ZA
dc.identifier.citationColeppa, B. et al. 2017. Measuring CP nature of top-Higgs couplings at the future LargeHadron electron Collider. Physics Letters B, 770 (2017), pp. 335-341en_ZA
dc.identifier.issn0370-2693 (Print)
dc.identifier.issn1873-2445 (Online)
dc.identifier.urihttp://hdl.handle.net/10539/23419
dc.journal.titlePhysics Letters Ben_ZA
dc.journal.volume770en_ZA
dc.language.isoenen_ZA
dc.publisherElsevieren_ZA
dc.rights© 2017 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.en_ZA
dc.subjectElectron-proton collisionen_ZA
dc.subjectTop-Higgs couplingen_ZA
dc.subjectTop polarisationen_ZA
dc.subjectPROTON COLLISIONSen_ZA
dc.subjectATLAS DETECTORen_ZA
dc.subjectLHCen_ZA
dc.subjectBOSONen_ZA
dc.subjectDECAYSen_ZA
dc.subjectMASSen_ZA
dc.subjectQUARKSen_ZA
dc.subjectSPINen_ZA
dc.titleMeasuring CP nature of top-Higgs couplings at the future LargeHadron electron Collideren_ZA
dc.typeArticleen_ZA
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