|
Title
|
|
|
|
Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF
|
|
|
Author
|
|
|
|
|
|
|
Institution/Organisation
|
|
|
|
CDF Collaboration
|
|
|
Abstract
|
|
|
|
| We report on a search for the non-standard-model process u(c)+g→t using pp̅ collision data collected by the Collider Detector at Fermilab II detector corresponding to 2.2 fb-1. The candidate events are classified as signal-like or backgroundlike by an artificial neural network. The observed discriminant distribution yields no evidence for flavor-changing neutral current top-quark production, resulting in an upper limit on the production cross section σ(u(c)+g→t)<1.8 pb at the 95% C.L. Using theoretical predictions we convert the cross section limit to upper limits on flavor-changing neutral current branching ratios: B(t→u+g)<3.9×10-4 and B(t→c+g)<5.7×10-3. |
|
|
|
Language
|
|
|
|
English
|
|
|
Source (journal)
|
|
|
|
Physical review letters. - New York, N.Y., 1958, currens
|
|
|
Publication
|
|
|
|
New York, N.Y.
:
American Physical Society
,
2009
|
|
|
ISSN
|
|
|
|
0031-9007
[print]
1079-7114
[online]
|
|
|
DOI
|
|
|
|
10.1103/PHYSREVLETT.102.151801
|
|
|
Volume/pages
|
|
|
|
102
:15
(2009)
, p. 151801,1-151801,7
|
|
|
ISI
|
|
|
|
000265285700013
|
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|
|
Full text (open access)
|
|
|
|
|
|