/ Experiment-HEP hep-ex/0106027

Measurement of the ratio of the differential cross-sections for W and Z boson production as a function of transverse momentum in p anti-p collisions at s**(1/2) = 1.8-TeV

Abazov, V.M. ; Abbott, B. ; Abdesselam, A. ; Abolins, M. ; Abramov, V. ; Acharya, Bannanje Sripath ; Adams, D.L. ; Adams, M. ; Ahmed, S.N. ; Alexeev, G.D. ; Alves, G.A. ; Amos, Norman A. ; Anderson, E.W. ; Arnoud, Y. ; Baarmand, M.M. ; Babintsev, V.V. ; Babukhadia, Levan R. ; Bacon, T.C. ; Baden, A. ; Baldin, B. ; Balm, P.W. ; Banerjee, S. ; Barberis, E. ; Baringer, Philip S. ; Barreto, J.

Pages: 14

Abstract: We report on a preliminary measurement of the ratio of the differential cross sections for W and Z boson production as a function of transverse momentum in proton-antiproton collisions at $\sqrt{s}$ = 1.8 TeV. It has been shown that the ratio between W and Z observables can be reliably calculated using perturbative QCD, even when the individual observables are not. We present the first comparison between the measurement of a W and Z observable ratio and a purely perturbative calculation. The use of the ratio reduces both experimental and theoretical uncertainites and might result in smaller overall uncertainties on the measured W mass and width, compared to currently used methods at hadron colliders.

Keyword(s): D0

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Запись создана 2010-10-28, последняя модификация 2014-01-30

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