VINCIA for hadron colliders

Fischer, N.; Prestel, S.; Ritzmann, M.; Skands, P.

doi:10.1140/epjc/s10052-016-4429-6

Title: VINCIA for hadron colliders

Journal Article · Fri Oct 28 00:00:00 EDT 2016 · European Physical Journal. C, Particles and Fields

DOI:https://doi.org/10.1140/epjc/s10052-016-4429-6· OSTI ID:1330389

Fischer, N.; Prestel, S.; Ritzmann, M.; Skands, P.

We present the first public implementation of antenna-based QCD initial- and final-state showers. The shower kernels are 2→3 antenna functions, which capture not only the collinear dynamics but also the leading soft (coherent) singularities of QCD matrix elements. We define the evolution measure to be inversely proportional to the leading poles, hence gluon emissions are evolved in a p_⊥ measure inversely proportional to the eikonal, while processes that only contain a single pole (e.g., g → qq¯) are evolved in virtuality. Non-ordered emissions are allowed, suppressed by an additional power of 1/Q². Recoils and kinematics are governed by exact on-shell 2 → 3 phase-space factorisations. This first implementation is limited to massless QCD partons and colourless resonances. Tree-level matrix-element corrections are included for QCD up to O(α⁴_s) (4 jets), and for Drell–Yan and Higgs production up to O(α³_s) (V / H + 3 jets). Finally, the resulting algorithm has been made publicly available in Vincia 2.0.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-76SF00515; 320651; ERC-AdG-228301; FT130100744

OSTI ID:: 1330389

Alternate ID(s):: OSTI ID: 1358458

Report Number(s):: SLAC-PUB-16529; 589; PII: 4429

Journal Information:: European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Vol. 76 Journal Issue: 11; ISSN 1434-6044

Publisher:: Springer Science + Business MediaCopyright Statement

Country of Publication:: Germany

Language:: English

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Cited by: 43 works

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