Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/10625
Title: Search for flavor-changing neutral currents in top-quark decays t -> Zq in pp collisions at root s=8 TeV
Authors: CMS Collaboration
Issue Date: 2014
Publisher: American Physical Society
Abstract: A search for flavor-changing neutral currents in top-quark decays t -> Zq is performed in events produced from the decay chain (tt) over bar -> Zq + Wb, where both vector bosons decay leptonically, producing a final state with three leptons (electrons or muons). A data set collected with the CMS detector at the LHC is used, corresponding to an integrated luminosity of 19.7 fb(-1) of proton-proton collisions at a center-of-mass energy of 8 TeV. No excess is seen in the observed number of events relative to the standard model prediction; thus, no evidence for flavor-changing neutral currents in top-quark decays is found. A combination with a previous search at 7 TeV excludes a t. Zq branching fraction greater than 0.05% at the 95% confidence level.
Description: PubMed: 24836238
URI: https://doi.org/10.1103/PhysRevLett.112.171802
https://hdl.handle.net/10625
ISSN: 0031-9007
1079-7114
Appears in Collections:PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Rectorate / Rektörlük
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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