# Search for the Flavor Changing Neutral Current Decay t $\to Zq$ in $p \bar{p}$ Collisions at $\sqrt{s}=1.96$

### Description

We report a search for the flavor changing neutral current (FCNC) decay of the top quark t {yields} Zq (q = u, c) in p{bar p} collisions at {radical}s = 1.96 TeV using a data sample corresponding to an integrated luminosity of 1.9 fb{sup -1} collected by the CDF II detector. This decay is strongly suppressed in the standard model (SM) and a signal at the Tevatron would be an indication of physics beyond the SM. Using Z+ {ge} 4 jet final state candidate events, both with and without an identified bottom quark jet, we discriminate signal from background by ... continued below

### Creation Information

Aaltonen, : T. May 1, 2008.

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## What

### Description

We report a search for the flavor changing neutral current (FCNC) decay of the top quark t {yields} Zq (q = u, c) in p{bar p} collisions at {radical}s = 1.96 TeV using a data sample corresponding to an integrated luminosity of 1.9 fb{sup -1} collected by the CDF II detector. This decay is strongly suppressed in the standard model (SM) and a signal at the Tevatron would be an indication of physics beyond the SM. Using Z+ {ge} 4 jet final state candidate events, both with and without an identified bottom quark jet, we discriminate signal from background by exploring kinematic constraints present in FCNC events and obtain an upper limit of {Beta}(t {yields} Zq) &lt; 3.7% at 95% C.L.

### Identifier

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• Report No.: FERMILAB-PUB-08-128-E
• Grant Number: AC02-07CH11359
• Office of Scientific & Technical Information Report Number: 928819

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## When

• May 1, 2008

### Added to The UNT Digital Library

• Sept. 27, 2016, 1:39 a.m.

### Description Last Updated

• Dec. 1, 2016, 7:07 p.m.

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Aaltonen, : T. Search for the Flavor Changing Neutral Current Decay t $\to Zq$ in $p \bar{p}$ Collisions at $\sqrt{s}=1.96$, article, May 1, 2008; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc894997/: accessed June 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.