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arXiv · hep-ph/0007190

Non-perturbative effects in the W and Z transverse momentum distribution

A. Guffanti·G. E. Smye
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Abstract

We use the "dispersive method" to investigate non-perturbative effects in the transverse momentum distribution of vector bosons produced in p-pbar collisions. The assumption of a non-perturbative modification to the running coupling at low scales leads to additional contributions in impact parameter space proportional to -b^2 log Q^2 and -b^2. Our results, which we expect to be valid provided tau is not close to 1, are shown to account for a substantial proportion of the total non-perturbative contribution extracted from data.

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A. Guffanti, G. E. Smye. 2000-07-18. Non-perturbative effects in the W and Z transverse momentum distribution. https://doi.org/10.1088/1126-6708%2F2000%2F10%2F025

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