We report a search for the flavor-changing neutral-current decay of the top quark t -> Zq (q=u, c) in p (p) over bar collisions at s=1.96 TeV using a data sample corresponding to an integrated luminosity of 1.9 fb(-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.

T., A., J., A., T., A., M. G., A., B. A., G., S., A., et al. (2008). Search for the Flavor-Changing Neutral-Current Decay t -> Zq in p (p) over bar Collisions at s=1.96 TeV. PHYSICAL REVIEW LETTERS, 101(19), 192002-1-192002-7 [10.1103/PhysRevLett.101.192002].

Search for the Flavor-Changing Neutral-Current Decay t -> Zq in p (p) over bar Collisions at s=1.96 TeV

CIOCCI, MARIA AGNESE;
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 p (p) over bar collisions at s=1.96 TeV using a data sample corresponding to an integrated luminosity of 1.9 fb(-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
T., A., J., A., T., A., M. G., A., B. A., G., S., A., et al. (2008). Search for the Flavor-Changing Neutral-Current Decay t -> Zq in p (p) over bar Collisions at s=1.96 TeV. PHYSICAL REVIEW LETTERS, 101(19), 192002-1-192002-7 [10.1103/PhysRevLett.101.192002].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/37304
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