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Title: Multivariate searches for single top quark production with the D0 detector

Abstract

We present a search for electroweak production of single top quarks in (p{bar p} {yields} t{bar b} + X) and t-channel (p{bar p} {yields} tq{bar b} + 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. Two separate analysis methods are used: neural networks and a cut-based analysis. No evidence for a single top quark signal is found. We set 95% confidence level upper limits on the production cross sections using Bayesian statistics, based on event counts and binned likelihoods formed from the neural network output. The limits from the neural network (cut-based) analysis are 6.4 pb (10.6 pb) in the s-channel and 5.0 pb (11.3 pb) in the t-channel.

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
892398
Report Number(s):
FERMILAB-PUB-06-069-E
arXiv eprint number hep-ex/0604020; TRN: US200711%%451
DOE Contract Number:  
AC02-76CH03000
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys.Rev.D75:092007,2007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; FERMILAB TEVATRON; NEURAL NETWORKS; PRODUCTION; S CHANNEL; STATISTICS; T CHANNEL; T QUARKS; Experiment-HEP

Citation Formats

Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., Agelou, M., Agram, J.-L., Ahn, S.H., Ahsan, M., Alexeev, G.D., and /Buenos Aires U. /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Sao Paulo, IFT /Alberta U. /Simon Fraser U. /York U., Canada /McGill U. /Beijing, Inst. High Energy Phys. /Hefei, CUST /Andes U., Bogota. Multivariate searches for single top quark production with the D0 detector. United States: N. p., 2006. Web.
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., Agelou, M., Agram, J.-L., Ahn, S.H., Ahsan, M., Alexeev, G.D., & /Buenos Aires U. /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Sao Paulo, IFT /Alberta U. /Simon Fraser U. /York U., Canada /McGill U. /Beijing, Inst. High Energy Phys. /Hefei, CUST /Andes U., Bogota. Multivariate searches for single top quark production with the D0 detector. United States.
Abazov, V.M., Abbott, B., Abolins, M., Acharya, B.S., Adams, M., Adams, T., Agelou, M., Agram, J.-L., Ahn, S.H., Ahsan, M., Alexeev, G.D., and /Buenos Aires U. /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Sao Paulo, IFT /Alberta U. /Simon Fraser U. /York U., Canada /McGill U. /Beijing, Inst. High Energy Phys. /Hefei, CUST /Andes U., Bogota. Sat . "Multivariate searches for single top quark production with the D0 detector". United States. doi:. https://www.osti.gov/servlets/purl/892398.
@article{osti_892398,
title = {Multivariate searches for single top quark production with the D0 detector},
author = {Abazov, V.M. and Abbott, B. and Abolins, M. and Acharya, B.S. and Adams, M. and Adams, T. and Agelou, M. and Agram, J.-L. and Ahn, S.H. and Ahsan, M. and Alexeev, G.D. and /Buenos Aires U. /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Sao Paulo, IFT /Alberta U. /Simon Fraser U. /York U., Canada /McGill U. /Beijing, Inst. High Energy Phys. /Hefei, CUST /Andes U., Bogota},
abstractNote = {We present a search for electroweak production of single top quarks in (p{bar p} {yields} t{bar b} + X) and t-channel (p{bar p} {yields} tq{bar b} + 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. Two separate analysis methods are used: neural networks and a cut-based analysis. No evidence for a single top quark signal is found. We set 95% confidence level upper limits on the production cross sections using Bayesian statistics, based on event counts and binned likelihoods formed from the neural network output. The limits from the neural network (cut-based) analysis are 6.4 pb (10.6 pb) in the s-channel and 5.0 pb (11.3 pb) in the t-channel.},
doi = {},
journal = {Phys.Rev.D75:092007,2007},
number = ,
volume = ,
place = {United States},
year = {Sat Apr 01 00:00:00 EST 2006},
month = {Sat Apr 01 00:00:00 EST 2006}
}