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Title: Measurements of $$\sigma(V+D^{*})/\sigma(V)$$ in $9.7$ fb$$^{-1}$$ at CDF Run II

Abstract

The Standard Model of particle physics has been remarkably successful, but the non-perturbative features of quantum chromodynamics must be tested and modeled with data. There have been many such tests, focused primarily on the use of jet-based probes of heavy flavor (bottom and charm quark) production at hadron colliders. In this thesis, we propose and test a strategy for identifying heavy flavor in events containing a W or Z vector boson (a V boson); this technique probes a much lower energy regime than can be explored by jet-based methods. In a sample of W and Z events skimmed from 9.7 fb -1 of high- pT electron and muon data from CDF Run II p p collisions at center of mass energy √s = 1:96 GeV , we identify charm by fully reconstructing D* (2010) → D 0(→ Kπ )π s decays at the track level. Using a binned fit of Δm=m(Kππ s) m(Kπ ) to count reconstructed D* candidates, we then unfold these raw counts with acceptance values derived from Monte Carlo, and present measurements of σ(W + D* )/ σ(W) and σ(Z + D* )/ σ(Z) in the W/Z leptonic decay channels. All measurements are found to be inmore » agreement with the predictions of Pythia 6.2 (PDF set CTEQ5L). These results include the first measurement of W/Z + c production in events with zero jet objects at the Tevatron, and the first measurement of W/Z +c production with p T (c) < 15 GeV at the Tevatron.« less

Authors:
 [1]
  1. Univ. of Illinois, Urbana-Champaign, IL (United States)
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:
1156543
Report Number(s):
FERMILAB-THESIS-2014-17
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

Matera, Keith. Measurements of $\sigma(V+D^{*})/\sigma(V)$ in $9.7$ fb$^{-1}$ at CDF Run II. United States: N. p., 2014. Web. doi:10.2172/1156543.
Matera, Keith. Measurements of $\sigma(V+D^{*})/\sigma(V)$ in $9.7$ fb$^{-1}$ at CDF Run II. United States. doi:10.2172/1156543.
Matera, Keith. Wed . "Measurements of $\sigma(V+D^{*})/\sigma(V)$ in $9.7$ fb$^{-1}$ at CDF Run II". United States. doi:10.2172/1156543. https://www.osti.gov/servlets/purl/1156543.
@article{osti_1156543,
title = {Measurements of $\sigma(V+D^{*})/\sigma(V)$ in $9.7$ fb$^{-1}$ at CDF Run II},
author = {Matera, Keith},
abstractNote = {The Standard Model of particle physics has been remarkably successful, but the non-perturbative features of quantum chromodynamics must be tested and modeled with data. There have been many such tests, focused primarily on the use of jet-based probes of heavy flavor (bottom and charm quark) production at hadron colliders. In this thesis, we propose and test a strategy for identifying heavy flavor in events containing a W or Z vector boson (a V boson); this technique probes a much lower energy regime than can be explored by jet-based methods. In a sample of W and Z events skimmed from 9.7 fb-1 of high- pT electron and muon data from CDF Run II p p collisions at center of mass energy √s = 1:96 GeV , we identify charm by fully reconstructing D* (2010) → D0(→ Kπ )π s decays at the track level. Using a binned fit of Δm=m(Kππ s) m(Kπ ) to count reconstructed D* candidates, we then unfold these raw counts with acceptance values derived from Monte Carlo, and present measurements of σ(W + D* )/ σ(W) and σ(Z + D* )/ σ(Z) in the W/Z leptonic decay channels. All measurements are found to be in agreement with the predictions of Pythia 6.2 (PDF set CTEQ5L). These results include the first measurement of W/Z + c production in events with zero jet objects at the Tevatron, and the first measurement of W/Z +c production with pT (c) < 15 GeV at the Tevatron.},
doi = {10.2172/1156543},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {1}
}

Thesis/Dissertation:
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