Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/4906
Title: Search for a vectorlike quark with charge 2/3 in t+Z events from pp collisions at ?s=7TeV
Authors: CMS Collaboration
Demir, Durmuş Ali
Keywords: High energy physics
Bosons
Tellurium compounds
CMS detectors
Issue Date: Dec-2011
Publisher: American Physical Society
Source: Chatrchyan, S, Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M.,...CMS Collaboration (2012). Search for a vectorlike quark with charge 2/3 in t+Z events from pp collisions at √s=7TeV. Physical Review Letters, 107(27). doi:10.1103/PhysRevLett.107.271802
Abstract: A search for pair-produced heavy vectorlike charge-2/3 quarks, T, in pp collisions at a center-of-mass energy of 7 TeV, is performed with the CMS detector at the LHC. Events consistent with the flavor-changing-neutral-current decay of a T quark to a top quark and a Z boson are selected by requiring two leptons from the Z-boson decay, as well as an additional isolated charged lepton. In a data sample corresponding to an integrated luminosity of 1.14fb -1, the number of observed events is found to be consistent with the standard model background prediction. Assuming a branching fraction of 100% for the decay T→tZ, a T quark with a mass less than 475GeV/c 2 is excluded at the 95% confidence level. © 2011 CERN.
URI: http://doi.org/10.1103/PhysRevLett.107.271802
http://hdl.handle.net/11147/4906
ISSN: 0031-9007
1079-7114
Appears in Collections:Physics / Fizik
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Rectorate / Rektörlük
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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