Jul 16 – 22, 2009
Kraków, Poland
Europe/Warsaw timezone

Observation of single top at CDF

Jul 16, 2009, 4:30 PM
Middle Lecture Hall A (Kraków, Poland)

Middle Lecture Hall A

Kraków, Poland

The Auditorium Maximum of the Jagiellonian University 33 Krupnicza Street 31-123 Kraków
Standard Model Electroweak Physics VII. Standard Model Electroweak Physics


Mr Bruno Casal Laraña (Instituto de Fisica de Cantabria (CSIC - U. Cantabria))


We present observation of electroweak single top quark production using 3.2 fb-1 of data collected by the CDF experiment. Candidate events are selected for further classification by five parallel analysis techniques: one using a likelihood discriminant, one using a matrix-element discriminant, one using decision trees, one using a neural network, and one using a complementary dataset. The results of these analyses are combined in order to improve the expected sensitivity. The signicance of the observed data is 5.0 standard deviations, and the expected sensitivity is in excess of 5.9 standard deviations. We also present the most current value of the CKM matrix element Vtb. Finally we present the most precise results on a separate search for s-channel and t-channel single top quark production at CDF.

Primary author

Mr Bruno Casal Laraña (Instituto de Fisica de Cantabria (CSIC - U. Cantabria))


Presentation materials