Details

Autor(en) / Beteiligte

• Alvarez González, B
• Antos, J
• Aurisano, A
• Barbaro-Galtieri, A
• Bhatti, A
• Bizjak, I
• Blumenfeld, B
• Boudreau, J
• Burkett, K
• Busetto, G
• Buzatu, A
• Canepa, A
• Carls, B
• Carlsmith, D
• Carron, S
• Cavaliere, V
• Chang, S H
• Chiarelli, G
• Chou, J P
• Chwalek, T
• Convery, M E
• Crescioli, F
• Cully, J C
• Deninno, M
• di Giovanni, G P
• Dube, S
• Elagin, A
• Errede, D
• Fedorko, W T
• Feild, R G
• Flanagan, G
• Forrest, R
• Frank, M J
• Gallinaro, M
• Gibson, K
• Giurgiu, G
• Gold, M
• Gomez, G
• Gorelov, I
• Grundler, U
• Guimaraes da Costa, J
• Hahn, K
• Han, J Y
• Heck, M
• Hsu, S-C
• Hussein, M
• Jeon, E J
• Karchin, P E
• Kim, H W
• Kim, M J
• Klimenko, S
• Kruse, M
• Krutelyov, V
• Kuhr, T
• Lecompte, T
• Loginov, A
• Luci, C
• Lungu, G
• Marino, C P
• McNulty, R
• Merkel, P
• Miller, R
• Morello, M J
• Muller, Th
• Nachtman, J
• Norniella, O
• Oakes, L
• Orava, R
• Paramonov, A A
• Pauletta, G
• Pianori, E
• Pounder, N
• Pueschel, E
• Richter, S
• Sartori, L
• Schmidt, E E
• Schmidt, M A
• Schmidt, M P
• Scodellaro, L
• Sedov, A
• Sfyrla, A
• Slaunwhite, J
• Soha, A
• Squillacioti, P
• Stelzer-Chilton, O
• Thomson, E
• Tipton, P
• Ttito-Guzmán, P
• Tkaczyk, S
• Tourneur, S
• Ukegawa, F
• Vataga, E
• Velev, G
• Warburton, A
• Williams, H H
• Wolfe, C
• Yamaoka, J
• Yoshida, T
• Zanello, L
• Zhang, X

Titel

Search for top-quark production via flavor-changing neutral currents in W+1 jet events at CDF

Ist Teil von

• Physical review letters, 2009-04, Vol.102 (15), p.151801-151801, Article 151801

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2009

Quelle

American Physical Society

Beschreibungen/Notizen

• We report on a search for the non-standard-model process u(c) + g --> t using pp[over ] 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 sigma(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 x 10;{-4} and B(t --> c + g) < 5.7 x 10;{-3}.