Becher T, Hager M. Event-based transverse momentum resummation.
THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2019;
79:665. [PMID:
31708683 PMCID:
PMC6822784 DOI:
10.1140/epjc/s10052-019-7136-2]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 07/13/2019] [Indexed: 06/10/2023]
Abstract
We have developed a framework for automated transverse momentum resummation for arbitrary electroweak final states based on reweighting tree-level events. It is fully differential in the kinematics of the electroweak final states, which facilitates a straightforward analysis of arbitrary observables in the small transverse momentum region. We have implemented the resummation at next-to-next-to-leading logarithmic accuracy and match to next-to-leading fixed-order results using the event generator MadGraph5_aMC@NLO. Results for Z and W boson production with leptonic decay as well as WZ production are presented. We compare to experimental measurements for the transverse momentum and the angular observable ϕ ∗ .
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