TY  - JOUR
AU  - CDF Collaboration (Aaltonen, T. et al
AU  - Cabrera, S.
PY  - 2010
DA  - 2010//
TI  - Search for single top quark production in p(p)over-bar collisions at root s=1.96 TeV in the missing transverse energy plus jets topology
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 072003
EP  - 24pp
VL  - 81
IS  - 7
PB  - Amer Physical Soc
AB  - We report a search for single top quark production with the CDF II detector using 2: 1 fb(-1) of integrated luminosity of p (p) over bar collisions at root s = 1.96 TeV. The data selected consist of events characterized by large energy imbalance in the transverse plane and hadronic jets, and no identified electrons and muons, so the sample is enriched in W -> tau nu decays. In order to suppress backgrounds, additional kinematic and topological requirements are imposed through a neural network, and at least one of the jets must be identified as a b quark jet. We measure an excess of signal-like events in agreement with the standard model prediction, but inconsistent with a model without single top quark production by 2.1 standard deviations (sigma), with a median expected sensitivity of 1.4 sigma. Assuming a top quark mass of 175 GeV/c(2) and ascribing the excess to single top quark production, the cross section is measured to be 4.9(-2.2)(+2.5) (stat + syst) pb, consistent with measurements performed in independent data sets and with the standard model prediction.
SN  - 1550-7998
UR  - http://arXiv.org/abs/1001.4577
UR  - https://doi.org/10.1103/PhysRevD.81.072003
DO  - 10.1103/PhysRevD.81.072003
LA  - English
N1  - ISI:000277201900007
ID  - CDFCollaborationAaltonen+Cabrera2010
ER  -