Probing the low transverse momentum domain of Z production with novel variables
Open access
Datum
2012-01Typ
- Journal Article
ETH Bibliographie
yes
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Abstract
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 DØ collaboration have introduced novel variables which lead to improved measurements compared to the case of the standard Q T variable. To complement this improvement on the experimental side, we develop here a complete phenomenological study dedicated in particular to the new ϕ* 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 (O(α2s)) result, to the experimental data and find excellent agreement over essentially the entire range of ϕ*, 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. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000047939Publikationsstatus
publishedExterne Links
Zeitschrift / Serie
Journal of High Energy PhysicsBand
Seiten / Artikelnummer
Verlag
SpringerThema
Hadronic Colliders; QCD; NLO Computations; Standard ModelETH Bibliographie
yes
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