skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Search for the Flavor Changing Neutral Current Decay $$t\rightarrow qZ$$ in $$p\overline{p}$$ Collisions at $$\sqrt{s}$$ = 1.96 TeV

Abstract

This dissertation presents a blind search for the flavor changing neutral current decay of the top quark t → qZ in pp collisions at [special characters omitted] = 1.96TeV using a data sample corresponding to an integrated luminosity of 1.12 fb-1 collected by the Collider Detector at Fermilab (CDF), This decay is extremely rare in the standard model, and a signal at the Tevatron would be an indication of new physics. Dividing candidate events with a Z boson and four or more jets into a sample of those which have a heavy flavor jet identified by a secondary vertex algorithm and those which do not, we observe data yields consistent with background expectations. We set a 95% C.L. upper limit on the branching fraction B (t → qZ) of 11.3%, consistent with an expected upper limit of 7.8% ± 3.3%.

Authors:
 [1]
  1. Harvard U.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1342790
Report Number(s):
FERMILAB-THESIS-2007-95
1243484
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Thesis/Dissertation
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Zaw, Ingyin. Search for the Flavor Changing Neutral Current Decay $t\rightarrow qZ$ in $p\overline{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV. United States: N. p., 2007. Web. doi:10.2172/1342790.
Zaw, Ingyin. Search for the Flavor Changing Neutral Current Decay $t\rightarrow qZ$ in $p\overline{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV. United States. doi:10.2172/1342790.
Zaw, Ingyin. Mon . "Search for the Flavor Changing Neutral Current Decay $t\rightarrow qZ$ in $p\overline{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV". United States. doi:10.2172/1342790. https://www.osti.gov/servlets/purl/1342790.
@article{osti_1342790,
title = {Search for the Flavor Changing Neutral Current Decay $t\rightarrow qZ$ in $p\overline{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV},
author = {Zaw, Ingyin},
abstractNote = {This dissertation presents a blind search for the flavor changing neutral current decay of the top quark t → qZ in pp collisions at [special characters omitted] = 1.96TeV using a data sample corresponding to an integrated luminosity of 1.12 fb-1 collected by the Collider Detector at Fermilab (CDF), This decay is extremely rare in the standard model, and a signal at the Tevatron would be an indication of new physics. Dividing candidate events with a Z boson and four or more jets into a sample of those which have a heavy flavor jet identified by a secondary vertex algorithm and those which do not, we observe data yields consistent with background expectations. We set a 95% C.L. upper limit on the branching fraction B (t → qZ) of 11.3%, consistent with an expected upper limit of 7.8% ± 3.3%.},
doi = {10.2172/1342790},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

Thesis/Dissertation:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this thesis or dissertation.

Save / Share: