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Title: Measurement of the $WW+WZ$ production cross section in a semileptonic decay mode at CDF

Abstract

The measurement of the WW + WZ production cross section in a semileptonic decay mode is presented. The measurement is carried out with 4.6 fb -1 of integrated luminosity collected by the CDF II detector in √s = 1.96 TeV proton-antiproton collisions at the Tevatron. The main experimental challenge is identifying the signal in the overwhelming background from W+jets production. The modeling of the W+jets background is carefully studied and a matrix element technique is used to build a discriminant to separate signal and background. The cross section of WW + WZ production is measured to be σ(p$$\bar{p}$$ → WW + WZ) = 16.5 -3.0 +3.3 pb, in agreement with the next-to-leading order theoretical prediction of 15.1 ± 0.9 pb. The significance of the signal is evaluated to be 5.4σ. This measurement is an important milestone in the search for the Standard Model Higgs boson at the Tevatron.

Authors:
 [1]
  1. Univ. of Chicago, IL (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
975160
Report Number(s):
FERMILAB-THESIS-2010-07
TRN: US1002399
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Thesis/Dissertation
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; FORECASTING; HIGGS BOSONS; LUMINOSITY; MATRIX ELEMENTS; PRODUCTION; SEMILEPTONIC DECAY; SIMULATION; STANDARD MODEL; Experiment-HEP

Citation Formats

Hurwitz, Martina. Measurement of the $WW+WZ$ production cross section in a semileptonic decay mode at CDF. United States: N. p., 2010. Web. doi:10.2172/975160.
Hurwitz, Martina. Measurement of the $WW+WZ$ production cross section in a semileptonic decay mode at CDF. United States. https://doi.org/10.2172/975160
Hurwitz, Martina. Mon . "Measurement of the $WW+WZ$ production cross section in a semileptonic decay mode at CDF". United States. https://doi.org/10.2172/975160. https://www.osti.gov/servlets/purl/975160.
@article{osti_975160,
title = {Measurement of the $WW+WZ$ production cross section in a semileptonic decay mode at CDF},
author = {Hurwitz, Martina},
abstractNote = {The measurement of the WW + WZ production cross section in a semileptonic decay mode is presented. The measurement is carried out with 4.6 fb-1 of integrated luminosity collected by the CDF II detector in √s = 1.96 TeV proton-antiproton collisions at the Tevatron. The main experimental challenge is identifying the signal in the overwhelming background from W+jets production. The modeling of the W+jets background is carefully studied and a matrix element technique is used to build a discriminant to separate signal and background. The cross section of WW + WZ production is measured to be σ(p$\bar{p}$ → WW + WZ) = 16.5-3.0+3.3 pb, in agreement with the next-to-leading order theoretical prediction of 15.1 ± 0.9 pb. The significance of the signal is evaluated to be 5.4σ. This measurement is an important milestone in the search for the Standard Model Higgs boson at the Tevatron.},
doi = {10.2172/975160},
url = {https://www.osti.gov/biblio/975160}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {3}
}

Thesis/Dissertation:
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