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Title: Measurement of the Ratio of Inclusive Cross Sections σ(p-$$\bar{p}$$→Z+b-jet) /σ(p-$$\bar{p}$$→Z+jet) in the Dilepton Final States

Abstract

The inclusive production of b-jets with a Z boson is an important background to searches for the Higgs boson in associated ZH → llb$$\bar{b}$$ production at the Fermilab Tevatron collider. This thesis describes the most precise measurement to date of the ratio of inclusive cross sections σ(p$$\bar{p}$$ → Z + b-jet)/σ(p$$\bar{p}$$ → Z + jet) when a Z boson decays into two electrons or muons. The measurement uses a data sample from p$$\bar{p}$$ collisions at the center of mass energy √s = 1.96 TeV corresponding to an integrated luminosity of 4.2 fb-1 collected by the D0 detector. The measured ratio σ(Z + b-jet)/σ(Z + jet) is 0.0187 ± 0.0021(stat) ± 0.0015(syst) for jets with transverse momentum pT > 20 GeV and pseudorapidity |η| ≤ 2.5. The measurement is compared with the next-to-leading order theoretical predictions from MCFM and is found to be consistent within uncertainties.

Authors:
 [1]
  1. Univ. at Buffalo, NY (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1018735
Report Number(s):
FERMILAB-THESIS-2010-68
TRN: US1103516
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Thesis/Dissertation
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BOSONS; CROSS SECTIONS; ELECTRONS; FERMILAB TEVATRON; HIGGS BOSONS; LUMINOSITY; MUONS; PRODUCTION; TRANSVERSE MOMENTUM; Experiment-HEP

Citation Formats

Smith, Kenneth James. Measurement of the Ratio of Inclusive Cross Sections σ(p-$\bar{p}$→Z+b-jet) /σ(p-$\bar{p}$→Z+jet) in the Dilepton Final States. United States: N. p., 2010. Web. doi:10.2172/1018735.
Smith, Kenneth James. Measurement of the Ratio of Inclusive Cross Sections σ(p-$\bar{p}$→Z+b-jet) /σ(p-$\bar{p}$→Z+jet) in the Dilepton Final States. United States. https://doi.org/10.2172/1018735
Smith, Kenneth James. 2010. "Measurement of the Ratio of Inclusive Cross Sections σ(p-$\bar{p}$→Z+b-jet) /σ(p-$\bar{p}$→Z+jet) in the Dilepton Final States". United States. https://doi.org/10.2172/1018735. https://www.osti.gov/servlets/purl/1018735.
@article{osti_1018735,
title = {Measurement of the Ratio of Inclusive Cross Sections σ(p-$\bar{p}$→Z+b-jet) /σ(p-$\bar{p}$→Z+jet) in the Dilepton Final States},
author = {Smith, Kenneth James},
abstractNote = {The inclusive production of b-jets with a Z boson is an important background to searches for the Higgs boson in associated ZH → llb$\bar{b}$ production at the Fermilab Tevatron collider. This thesis describes the most precise measurement to date of the ratio of inclusive cross sections σ(p$\bar{p}$ → Z + b-jet)/σ(p$\bar{p}$ → Z + jet) when a Z boson decays into two electrons or muons. The measurement uses a data sample from p$\bar{p}$ collisions at the center of mass energy √s = 1.96 TeV corresponding to an integrated luminosity of 4.2 fb-1 collected by the D0 detector. The measured ratio σ(Z + b-jet)/σ(Z + jet) is 0.0187 ± 0.0021(stat) ± 0.0015(syst) for jets with transverse momentum pT > 20 GeV and pseudorapidity |η| ≤ 2.5. The measurement is compared with the next-to-leading order theoretical predictions from MCFM and is found to be consistent within uncertainties.},
doi = {10.2172/1018735},
url = {https://www.osti.gov/biblio/1018735}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Oct 01 00:00:00 EDT 2010},
month = {Fri Oct 01 00:00:00 EDT 2010}
}

Thesis/Dissertation:
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