What does the W p_T distribution tell us about the W + 1 jet / W + 0 jet ratio at the Tevatron ?

Details What does the W p_T distribution tell us about the W + 1 jet / W + 0 jet ratio at the Tevatron ? What does the W p_T distribution tell us about the W + 1 jet / W + 0 jet ratio at the Tevatron ?

1998-06-04

arxiv.org/abs/hep-ph/9806262v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 5 1/2 figures, Contribution to ``QCD and High Energy Hadronic Interactions'', Moriond, Les Arcs, March 21-28, 1998

Scientific paper

We show that the W p_T distribution measured by D0 at the Tevatron agrees well with the NLO QCD theoretical prediction for this quantity, whilst the W + 1 jet/ W + 0 jet ratio, R^10, measured by D0 lies significantly above the NLO QCD theoretical prediction. We derive an approximate relationship between these two quantities, and show that this rules out the majority of theoretical explanations for the D0 excess in R^10. We discuss possible physics that could give rise to the R^10 excess, which have little effect on the W p_T.

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