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作者 Hurwitz, Martina
書名 Measurement of the WW + WZ production cross section in a semileptonic decay mode at CDF
國際標準書號 9781109689815
book jacket
說明 122 p
附註 Source: Dissertation Abstracts International, Volume: 71-04, Section: B, page: 2455
Advisers: James Pilcher; Florencia Canelli
Thesis (Ph.D.)--The University of Chicago, 2010
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 sigma( pp¯ → WW + WZ) = 16.5+3.3-3.0 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 5.4sigma. This measurement is an important milestone in the search for the Standard Model Higgs boson at the Tevatron
School code: 0330
Host Item Dissertation Abstracts International 71-04B
主題 Physics, Elementary Particles and High Energy
0798
Alt Author The University of Chicago. Physics
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