Title
Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF
Date Issued
16 April 2009
Access level
open access
Resource Type
journal article
Author(s)
Aaltonen T.
Adelman J.
Akimoto T.
Álvarez González B.
Amerio S.
Amidei D.
Anastassov A.
Annovi A.
Antos J.
Apollinari G.
Apresyan A.
Arisawa T.
Artikov A.
Ashmanskas W.
Attal A.
Aurisano A.
Azfar F.
Azzurri P.
Badgett W.
Barbaro-Galtieri A.
Barnes V.E.
Barnett B.A.
Bartsch V.
Bauer G.
Beauchemin P.H.
Bedeschi F.
Beecher D.
Behari S.
Bellettini G.
Bellinger J.
Benjamin D.
Beretvas A.
Beringer J.
Bhatti A.
Binkley M.
Bisello D.
Bizjak I.
Blair R.E.
Blocker C.
Blumenfeld B.
Bocci A.
Bodek A.
Boisvert V.
Bolla G.
Bortoletto D.
Boudreau J.
Boveia A.
Brau B.
Bridgeman A.
Brigliadori L.
Bromberg C.
Brubaker E.
Budagov J.
Budd H.S.
Budd S.
Burke S.
Burkett K.
Busetto G.
Bussey P.
Buzatu A.
Byrum K.L.
Cabrera S.
Calancha C.
Campanelli M.
Campbell M.
Canelli F.
Canepa A.
Carls B.
Carlsmith D.
Carosi R.
Carrillo S.
Carron S.
Casal B.
Casarsa M.
Castro A.
Catastini P.
Cauz D.
Cavaliere V.
Cavalli-Sforza M.
Cerri A.
Cerrito L.
Chang S.H.
Chen Y.C.
Chertok M.
Chiarelli G.
Chlachidze G.
Chlebana F.
Cho K.
Chokheli D.
Chou J.P.
Choudalakis G.
Chuang S.H.
Chung K.
Chung W.H.
Chung Y.S.
Chwalek T.
Ciobanu C.I.
Ciocci M.A.
Clark A.
Clark D.
Publisher(s)
American Physical Society
Abstract
We report on a search for the non-standard-model process u(c)+g→t using pp̄ collision data collected by the Collider Detector at Fermilab II detector corresponding to 2.2fb-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)<1.8pb 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. © 2009 The American Physical Society.
Volume
102
Issue
15
Language
Spanish
OCDE Knowledge area
Física de partículas, Campos de la Física
Subjects
Publication version
Version of Record
Scopus EID
2-s2.0-65549107952
Source
Physical Review Letters
ISSN of the container
10797114
Sponsor(s)
Science and Technology Facilities Council (PP/E000444/1, PP/E000452/1, PPA/A/S/2003/00461/2, ST/H001077/1)
Sources of information:
Directorio de Producción Científica
Scopus