A Measurement of the Inclusive Z / gamma* --> mu+ mu- Cross-Section and Study of W and Z Events in proton - anti-proton Collisions at D0 [electronic resource].

Published: Washington, D.C. : United States. Dept. of Energy, 2005.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description: 164 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

A measurement of the inclusive Z/γ* → μ⁺μ⁻ cross section for M{sub μμ} > 40 GeV at √s = 1.96 TeV is presented. The measurement is performed using a data sample corresponding to an integrated luminosity of 147.7 pb⁻¹, collected with the D0 detector at the Tevatron, Fermilab, between September 2002 and October 2003. A total of 14352 di-muon events are selected and a final result of σ(Z/γ*) = 327.8 ± 3.4(stat.) ± 8.4(syst.) ± 21.3(lumi.) pb is obtained. Correcting the number of di-muon events by a factor of 0.885 ± 0.015 for the contribution from pure γ* exchange and Z/γ* interference, the inclusive Z → μ⁺μ⁻ cross section is found to be: σ(Z) = 290.1 ± 3.0(stat.) ± 7.4(syst.) ± 18.9(lumi.) pb. Finally, comparisons of W and Z boson p{sub T} distributions as measured with D0 during Run I of the Tevatron are compared to HERWIG and MC@NLO predictions. Relevant parameters in the simulations are tuned to obtain the best possible fit to the data. An excellent agreement is found for both HERWIG and MC@NLO.

Report Numbers

E 1.99:fermilab-thesis-2005-05
fermilab-thesis-2005-05

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Note

Published through SciTech Connect.
02/01/2005.
"fermilab-thesis-2005-05"
Nurse, Emily L.

Funding Information

AC02-76CH03000

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