Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/3617
Title: Search for flavor-changing neutral currents in top quark decays t ›Hc and t ›Hu in multilepton final states in proton-proton collisions at ?s = 13 TeV with the ATLAS detector
Authors: The ATLAS Collaboration
Sultansoy, Saleh
Keywords: Collisions
jets
proton–proton collisions
Issue Date: Aug-2018
Publisher: American Physical Society
Source: ATLAS collaboration. (2018). Search for flavor-changing neutral currents in top quark decays t? H c and t? H u in multilepton final states in proton-proton collisions at s= 13 TeV with the ATLAS detector. Physical Review D, 98(3), 032002.
Abstract: Flavor-changing neutral currents are not present in the Standard Model at tree level and are suppressed in loop processes by the unitarity of the Cabibbo-Kobayashi-Maskawa matrix; the corresponding rates for top quark decay processes are experimentally unobservable. Extensions of the Standard Model can generate new flavor-changing neutral current processes, leading to signals which, if observed, would be unambiguous evidence of new interactions. A data set corresponding to an integrated luminosity of 36.1 fb-1 of pp collisions at a center-of-mass energy of s=13 TeV recorded with the ATLAS detector at the Large Hadron Collider is used to search for top quarks decaying to up or charm quarks with the emission of a Higgs boson, with subsequent Higgs boson decay to final states with at least one electron or muon. No signal is observed and limits on the branching fractions B(t?Hc)<0.16% and B(t?Hu)<0.19% at 95% confidence level are obtained (with expected limits of 0.15% in both cases). © 2018 CERN.
URI: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.98.032002
https://hdl.handle.net/20.500.11851/3617
ISSN: 24700010
Appears in Collections:Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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