Measurement of the t anti-t production cross section in p anti-p collisions at s**(1/2) =1.96-TeV using multijet events

Conference · Sat Oct 01 04:00:00 EDT 2005

OSTI ID:879003

Cerrito, Lucio

We present two measurements of the t{bar t} production cross section in collisions of protons and antiprotons at {radical}s = 196 TeV. We analyze a dataset of 310 {+-} 20 pb{sup -1} collected with the CDF 2 detector. In the first measurement, we select events with six to eight jets, at least one of which having a displaced secondary vertex, little or no missing transverse energy and optimized kinematical criteria consistent with the t{bar t} all-hadronic decay channel. In the second measurement, we select events with four or more jets, at least one of which having a displaced secondary vertex, high missing transverse energy, and optimized kinematical criteria consistent with the decay of t{bar t} to {tau}+jets. The averaged t{bar t} production cross section, determined from six different measurements using the CDF 2 detector in the dilepton, lepton+jets and all-hadronic decay channels, is also calculated to be {sigma}{sub t{bar t}} = 7.1 {+-} 0.6(stat) {+-} 0.7(syst) {+-} 0.4(lumi) pb, in agreement with the prediction of the standard model.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 879003
• Report Number(s): FERMILAB-CONF-05-437-E; arXiv eprint number hep-ex/0510002
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIPROTONS
CROSS SECTIONS
DECAY
Experiment-HEP
FERMILAB COLLIDER DETECTOR
FORECASTING
PHYSICS
PRODUCTION
PROTONS
STANDARD MODEL
TRANSVERSE ENERGY