Measurement of the relative fraction of t$$\bar{t}$$ events produced via gluon fusion in p$$\bar{p}$$ collision at √s = 1.96 TeV at CDF
Abstract
In this thesis we present a measurement of the relative fraction of t$$\bar{t}$$ events produced via gluon-fusion to the total number of t$$\bar{t}$$ events. Using the kinematics of the production and decay of the top and antitop quark pair, we trained a Neural Network to discriminate the gluon-fusion events. The Neural Network was then used as a template to fit for the gluon-fusion fraction in data. Using a total integrated luminosity of 955 pb-1 we find σ(gg→t$$\bar{t}$$)/σ(p$$\bar{p}$$→t$$\bar{t}$$) < 0.33 at 68% confidence level and σ(gg→t$$\bar{t}$$)/σ(p$$\bar{p}$$→t$$\bar{t}$$) < 0.61 at 95% confidence level.
- Authors:
-
- Rutgers Univ., New Brunswick, NJ (United States)
- Publication Date:
- Research Org.:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 915127
- Report Number(s):
- FERMILAB-THESIS-2007-18
TRN: US0804903
- DOE Contract Number:
- AC02-07CH11359
- Resource Type:
- Thesis/Dissertation
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DECAY; FERMILAB COLLIDER DETECTOR; GLUONS; LUMINOSITY; NEURAL NETWORKS; PRODUCTION; QUARKS; Experiment-HEP
Citation Formats
Yamaoka, Jared Andrew. Measurement of the relative fraction of t$\bar{t}$ events produced via gluon fusion in p$\bar{p}$ collision at √s = 1.96 TeV at CDF. United States: N. p., 2007.
Web. doi:10.2172/915127.
Yamaoka, Jared Andrew. Measurement of the relative fraction of t$\bar{t}$ events produced via gluon fusion in p$\bar{p}$ collision at √s = 1.96 TeV at CDF. United States. https://doi.org/10.2172/915127
Yamaoka, Jared Andrew. 2007.
"Measurement of the relative fraction of t$\bar{t}$ events produced via gluon fusion in p$\bar{p}$ collision at √s = 1.96 TeV at CDF". United States. https://doi.org/10.2172/915127. https://www.osti.gov/servlets/purl/915127.
@article{osti_915127,
title = {Measurement of the relative fraction of t$\bar{t}$ events produced via gluon fusion in p$\bar{p}$ collision at √s = 1.96 TeV at CDF},
author = {Yamaoka, Jared Andrew},
abstractNote = {In this thesis we present a measurement of the relative fraction of t$\bar{t}$ events produced via gluon-fusion to the total number of t$\bar{t}$ events. Using the kinematics of the production and decay of the top and antitop quark pair, we trained a Neural Network to discriminate the gluon-fusion events. The Neural Network was then used as a template to fit for the gluon-fusion fraction in data. Using a total integrated luminosity of 955 pb-1 we find σ(gg→t$\bar{t}$)/σ(p$\bar{p}$→t$\bar{t}$) < 0.33 at 68% confidence level and σ(gg→t$\bar{t}$)/σ(p$\bar{p}$→t$\bar{t}$) < 0.61 at 95% confidence level.},
doi = {10.2172/915127},
url = {https://www.osti.gov/biblio/915127},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Oct 01 00:00:00 EDT 2007},
month = {Mon Oct 01 00:00:00 EDT 2007}
}
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