Multivariate searches for single top quark production with the D0 detector

Journal Article · Tue May 01 04:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.092007· OSTI ID:21020464

Abazov, V M; Alexeev, G D; Bandurin, D V; Kalinin, A M; Kharzheev, Y M; Malyshev, V L; Tokmenin, V V; Vertogradov, L S; Yatsunenko, Y A ^[1]; Abbott, B; Gutierrez, P; Hall, I; Jain, S; Kopal, M; Pompos, A; Severini, H; Skubic, P; Strauss, M ^[2]; Abolins, M; Benitez, J A ^[3]

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1. Joint Institute for Nuclear Research, Dubna, (Russian Federation)
2. University of Oklahoma, Norman, Oklahoma 73019 (United States)
3. Michigan State University, East Lansing, Michigan 48824 (United States)

We present a search for electroweak production of single top quarks in the s-channel (pp{yields}tb+X) and t-channel (pp{yields}tqb+X) modes. We have analyzed 230 pb{sup -1} of data collected with the D0 detector at the Fermilab Tevatron Collider at a center-of-mass energy of {radical}(s)=1.96 TeV. No evidence for a single top quark signal is found. We set 95% confidence level upper limits on the production cross sections, based on binned likelihoods formed from a neural network output. The observed (expected) limits are 6.4 pb (4.5 pb) in the s-channel and 5.0 pb (5.8 pb) in the t-channel.

• OSTI ID: 21020464
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 75; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
FERMILAB TEVATRON
MULTIPARTICLE SPECTROMETERS
MULTIVARIATE ANALYSIS
NEURAL NETWORKS
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
PROTON-PROTON INTERACTIONS
REST MASS
S CHANNEL
T CHANNEL
T QUARKS
TEV RANGE