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Title
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Angular correlations in multi-jet final states from k-dependent parton showers
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Author
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Abstract
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| We investigate parton-branching methods based on transverse-momentum dependent (TMD) parton distributions and matrix elements for the Monte Carlo simulation of multi-particle final states at high-energy colliders. We observe that recently measured angular correlations in ep final states with multiple hadronic jets probe QCD coherence effects in the space-like branching, associated with finite-angle gluon radiation from partons carrying small longitudinal momenta, and not included in standard shower generators. We present Monte Carlo calculations for azimuthal two-jet and three-jet distributions, for jet multiplicities and for correlations in the transverse-momentum imbalance between the leading jets. We discuss comparisons with current experimental multi-jet data, and implications of corrections to collinear-ordered showers for LHC final states. |
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Language
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English
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Source (journal)
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Journal of high energy physics. - Bristol
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Publication
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Bristol
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2008
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ISSN
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1126-6708
1029-8479
[online]
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DOI
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10.1088/1126-6708/2008/10/113
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Volume/pages
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10
(2008)
, 28 p.
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Article Reference
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113
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ISI
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000260759200113
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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