We report a search for the flavor-changing neutral-current decay of the top quark t→Zq (q=u, c) in pp̄ collisions at s=1.96TeV using a data sample corresponding to an integrated luminosity of 1.9fb-1 collected by the CDF II detector. This decay is strongly suppressed in the standard model and an observation of a signal at the Fermilab Tevatron would be an indication of physics beyond the standard model. Using Z+4 jet final state candidate events, with and without an identified bottom quark jet, we obtain an upper limit of B(t→Zq)<3.7% at 95% C.L. © 2008 The American Physical Society.

Search for the flavor-changing neutral-current decay t→Zq in pp̄ collisions at √s=1.96TeV

Piacentino G.;
2008-01-01

Abstract

We report a search for the flavor-changing neutral-current decay of the top quark t→Zq (q=u, c) in pp̄ collisions at s=1.96TeV using a data sample corresponding to an integrated luminosity of 1.9fb-1 collected by the CDF II detector. This decay is strongly suppressed in the standard model and an observation of a signal at the Fermilab Tevatron would be an indication of physics beyond the standard model. Using Z+4 jet final state candidate events, with and without an identified bottom quark jet, we obtain an upper limit of B(t→Zq)<3.7% at 95% C.L. © 2008 The American Physical Society.
http://oai.aps.org/oai?verb=GetRecord&amp;Identifier=oai:aps.org:PhysRevLett.101.192002&amp;metadataPrefix=oai_apsmeta_2
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11695/88043
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