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We suggest replacing measurements of the individual cross-sections for theproduction of W + N jets and Z/gamma + N jets in searches for new high-energyphenomena at hadron colliders by the precision measurement of the ratios (W+0jet)/(Z+0 jet), (W+1 jet)/(Z+1 jet), (W+2 jets)/(Z+2 jets),... (W+N jets)/(Z+Njets), with N as large as 6 (the number of jets in ttbarH). These ratios canalso be formed for the case where one or more of the jets is tagged as a b or cquark. Existing measurements of the individual cross sections for Wenu + N jetsat the Tevatron have systematic uncertainties that grow rapidly with N, beingdominated by uncertainties in the identification of jets and the jet energyscale. These systematics, and also those associated with the luminosity, partondistribution functions (PDF's), detector acceptance and efficiencies, andsystematics of jet finding and b-tagging, are expected to substantially cancelin calculating the ratio of W to Z production in each N-jet channel, allowing agreater sensitivity to new contributions in these channels in Run II at theTevatron and at the LHC.Comment: 10 pages, 8 figures, added reference

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Ratio of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>W</mml:mi><mml:mo>+</mml:mo><mml:mi>N</mml:mi></mml:math>jets to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>Z</mml:mi></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mo>/</mml:mo><mml:mrow><mml:msup><mml:mrow><mml:mi>γ</mml:mi></mml:mrow><mml:mrow><mml:mi>*</mml:mi></mml:mrow></mml:msup></mml:mrow><mml:mo>+</…

Ratio ofW+Njets toZ0/γ*+