Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/10729
Title: Search for same-sign top-quark pair production at root s=7 TeV and limits on flavour changing neutral currents in the top sector
Authors: CMS Collaboration
Demir, Durmuş Ali
Keywords: Hadron-Hadron Scattering
Issue Date: 2011
Publisher: Springer Verlag
Abstract: An inclusive search for same-sign top-quark pair production in pp collisions at root s = 7 TeV is performed using a data sample recorded with the CMS detector in 2010, corresponding to an integrated luminosity of 35 pb(-1). This analysis is motivated by recent studies of p (p) over bar -> t (t) over bar reporting mass-dependent forward-backward asymmetries larger than expected from the standard model. These asymmetries could be due to Flavor Changing Neutral Currents (FCNC) in the top sector induced by t -channel exchange of a massive neutral vector boson (Z'). Models with such a Z' also predict enhancement of same-sign top-pair production in pp or pp collisions. Limits are set as a function of the Z' mass and its couplings to u and t quarks. These limits disfavour the FCNC interpretation of the Tevatron results.
URI: https://doi.org/10.1007/JHEP08(2011)005
https://hdl.handle.net/10729
ISSN: 1029-8479
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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