期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 11, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP11(2022)019
关键词
Parton Shower; Resummation
资金
- Royal Society [RP\R1\180112]
- European Research Council (ERC) under the European Union [788223]
- Science and Technology Facilities Council (STFC) [ST/T000864/1]
- European Research Council (ERC) [788223] Funding Source: European Research Council (ERC)
In this paper, we present tests of the PanScales parton showers for colour singlet production at fixed order, including the treatment of momentum imbalances from initial-state branching and the full colour handling for soft-collinear emissions and spin correlations.
We formulate PanScales parton showers for hadron collisions so as to achieve next-to-leading logarithmic (NLL) accuracy across a broad set of observables. We do so specifically for colour singlet production. Relative to the existing PanScales final-state showers, the main new question is that of how to redistribute momentum imbalances from initial-state branching across the remainder of the event. We present tests of the showers at fixed order, including the treatment of full colour for soft-collinear emissions and of spin correlations in both the soft and collinear domains. We also include comparisons to a formulation of a standard dipole shower, the current leading-logarithmic state of the art. A forthcoming companion paper [1] will explore all-order tests of the new showers.
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