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The First measurement of the top quark mass at CDF II in the lepton+jets and dilepton channels simultaneously [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy, 2008.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
24 pages : digital, PDF file
Additional Creators:
Fermi National Accelerator Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
The authors present a measurement of the mass of the top quark using data corresponding to an integrated luminosity of 1.9 fb⁻¹ of p{bar p} collisions collected at √s = 1.96 TeV with the CDF II detector at Fermilab's Tevatron. This is the first measurement of the top quark mass using top-antitop pair candidate events in the lepton + jets and dilepton decay channels simultaneously. They reconstruct two observables in each channel and use a non-parametric kernel density estimation technique to derive two-dimensional probability density functions from simulated signal and background samples. The observables are the top quark mass and the invariant mass of two jets from the W decay in the lepton + jets channel, and the top quark mass and the scalar sum of transverse energy of the event in the diletpon channel. They perform a simultaneous fit for the top quark mass and the jet energy scale, which is constrained in situ by the hadronic W boson mass. using 332 lepton + jets candidate events and 144 diletpon candidate events, they measure the top quark mass to be m{sub top} = 171.9 ± 1.7 (stat. + JES) ± 1.1 (other sys.) GeV/c² = 171.9 ± 2.0 GeV/c².
Report Numbers:
E 1.99:fermilab-pub-08-415
fermilab-pub-08-415
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Note:
Published through SciTech Connect.
09/01/2008.
"fermilab-pub-08-415"
"arXiv eprint number arXiv:0809.4808"
Submitted to Phys.Rev.D FT
Aaltonen, T.; Adelman, J.; Alvarez Gonzalez, B.; Amerio, S.; Anastassov, A.; Antos, J.; Apollinari, G.; Akimoto, T.; Annovi, Alberto; Albrow, Michael G.; Amidei, Dante E.
Funding Information:
AC02-07CH11359
View MARC record | catkey: 14708803