Measurement of the tt production cross section in pp collisions at {radical}(s)=1.96 TeV using soft electron b-tagging

Journal Article · Sat May 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.092002· OSTI ID:21409913

Aaltonen, T; Maki, T; Mehtala, P; Orava, R; Osterberg, K; Saarikko, H; Remortel, N van ^[1]; Adelman, J; Brubaker, E; Fedorko, W T; Grosso-Pilcher, C; Ketchum, W; Kim, Y K; Krop, D; Kwang, S; Lee, H S; Paramonov, A A; Schmidt, M A; Shiraishi, S; Shochet, M ^[2]

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1. Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki (Finland)
2. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)

We present a measurement of the top-quark pair-production cross section in pp collisions at {radical}(s)=1.96 TeV using a data sample corresponding to 1.7 fb{sup -1} of integrated luminosity collected with the Collider Detector at Fermilab. We reconstruct tt events in the lepton+jets channel, consisting of e{nu}+jets and {mu}{nu}+jets final states. The dominant background is the production of W bosons in association with multiple jets. To suppress this background, we identify electrons from the semileptonic decay of heavy-flavor jets (''soft electron tags''). From a sample of 2196 candidate events, we obtain 120 tagged events with a background expectation of 51{+-}3 events, corresponding to a cross section of {sigma}{sub tt}=7.8{+-}2.4(stat){+-}1.6(syst){+-}0.5(lumi) pb. We assume a top-quark mass of 175 GeV/c{sup 2}. This is the first measurement of the tt cross section with soft electron tags in run II of the Tevatron.

• OSTI ID: 21409913
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 9; Other Information: DOI: 10.1103/PhysRevD.81.092002; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
ELECTRON NEUTRINOS
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
FLAVOR MODEL
GEV RANGE
LEPTONS
LUMINOSITY
MASS
MUON NEUTRINOS
PAIR PRODUCTION
PROTON-PROTON INTERACTIONS
SEMILEPTONIC DECAY
T QUARKS
TEV RANGE 01-10
W MINUS BOSONS
W PLUS BOSONS
ACCELERATORS
BARYON-BARYON INTERACTIONS
BOSONS
COMPOSITE MODELS
CYCLIC ACCELERATORS
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
NEUTRINOS
NUCLEON-NUCLEON INTERACTIONS
OPTICAL PROPERTIES
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PHYSICAL PROPERTIES
POSTULATED PARTICLES
PROTON-NUCLEON INTERACTIONS
QUARK MODEL
QUARKS
RADIATION DETECTORS
SYNCHROTRONS
TEV RANGE
TOP PARTICLES
WEAK PARTICLE DECAY