| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10726048 | Physics Letters B | 2006 | 5 Pages |
Abstract
We revise the bâ model for the Collins-Soper-Sterman resummed form factor to improve description of the leading-power contribution at nearly nonperturbative impact parameters. This revision leads to excellent agreement of the transverse momentum resummation with the data in a global analysis of Drell-Yan lepton pair and Z boson production. The nonperturbative contributions are found to follow universal quasi-linear dependence on the logarithm of the heavy boson invariant mass, which closely agrees with an estimate from the infrared renormalon analysis.
Related Topics
Physical Sciences and Engineering
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Nuclear and High Energy Physics
Authors
Anton V. Konychev, Pavel M. Nadolsky,