Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-10-18
JHEP 01 (2012) 044
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages, 7 figures. Version accepted for publication in JHEP. A figure with comparison to RESBOS has been added
Scientific paper
The measurement of the low transverse momentum region of vector boson production in Drell-Yan processes has long been invaluable to testing our knowledge of QCD dynamics both beyond fixed-order in perturbation theory as well as in the non-perturbative region. Recently the D\O\ collaboration have introduced novel variables which lead to improved measurements compared to the case of the standard QT variable. To complement this improvement on the experimental side, we develop here a complete phenomenological study dedicated in particular to the new \phi* variable. We compare our study, which contains the state-of-the-art next-to-next-to-leading resummation of large logarithms and a smooth matching to the full next-to-leading order result, to the experimental data and find excellent agreement over essentially the entire range of \phi*, even without direct inclusion of non-perturbative effects. We comment on our findings and on the potential for future studies to constrain non-perturbative behaviour.
Banfi Andrea
Dasgupta Mrinal
Marzani Simone
Tomlinson Lee
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