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Comment on the $W + 1$ jet to $W + 0$ jets ratio

C. Balazs·C. -P. Yuan
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Abstract

To offer a possible resolution to the apparent discrepancy between the experimental and the theoretical values of the $W + 1$ jet to $W + 0$ jets ratio reported by the \D0 group, we examine the effects of the multiple soft gluon radiation on the $W$ boson production at the Tevatron. Based on the calculation of the $W$ boson transverse momentum ($Q_T$) distribution in the Collins-Soper-Sterman resummation formalism, we conclude that the effect of the soft gluon radiation is important in the region of $Q_T < 50$ GeV, and it can be better tested by a more inclusive observable $R_{CSS}(Q_T^{\min})\equiv \frac{σ(Q_T>Q_T^{\min})}{σ_{Total}}$.

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C. Balazs, C. -P. Yuan. 1997-04-29. Comment on the $W + 1$ jet to $W + 0$ jets ratio. https://arxiv.org/abs/hep-ph/9704429

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