# top physics: measurement of the ttbar production cross section in pp-bar collisions at sqrt s = 1.96 tev using lepton plus jets events with semileptonic b decays to muons

Technical Report · Wed Jun 01 00:00:00 EDT 2005

DOI:https://doi.org/10.2172/842924· OSTI ID:842924

Acosta, D

We present a measurement of the t{bar t} production cross section using 194 pb{sup -1} of CDF II data using events with a high transverse momentum electron or muon, three or more jets, and missing transverse energy. The measurement assumes 100% t {yields} Wb branching fraction. Events consistent with t{bar t} decay are found by identifying jets containing heavy flavor semileptonic decays to muons. The dominant backgrounds are evaluated directly from the data. Based on 20 candidate events and an expected background of 9.5 {+-} 1.1 events, we measure a production cross section of 5.3 {+-} 3.3{sub -1.0}{sup +1.3} pb, in agreement with the standard model.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 842924
• Report Number(s): LBNL-58137; FERMILAB-PUB-05-220-E; R&D Project: PCDOPS; TRN: US0503729
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
CROSS SECTIONS
DECAY
ELECTRONS
FERMILAB COLLIDER DETECTOR
LEPTONS
MUONS
PRODUCTION
SEMILEPTONIC DECAY
STANDARD MODEL
TRANSVERSE ENERGY
TRANSVERSE MOMENTUM