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

doi:https://doi.org/10.2172/975160

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

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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:

Hurwitz, Martina ^[1]

Univ. of Chicago, IL (United States)

Publication Date:: 2010-03-01

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.

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                    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

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                    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.

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@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}

}

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