期刊
EUROPEAN PHYSICAL JOURNAL C
卷 80, 期 9, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-020-8411-y
关键词
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资金
- European Research Council (ERC) under the European Unions Horizon 2020 research and innovation programme [788223]
- Science and Technologies Facilities Council (STFC) [ST/P000800/1]
- National Science Foundation [PHY 1820818]
- UK Science and Technologies Facilities Council (STFC)
- CERN
- STFC [ST/P000800/1, 2106299, ST/L000520/1] Funding Source: UKRI
We study the link between parton dynamics in the collinear limit and the logarithmically enhanced terms of the groomed jet mass distribution, for jets groomed with the modified mass-drop tagger (mMDT). While the leading-logarithmic (LL) result is linked to collinear evolution with leading-order splitting kernels, here we derive the NLL structure directly from triple-collinear splitting kernels. The calculation we present is a fixed-order calculation in the triple-collinear limit, independent of resummation ingredients and methods. It therefore constitutes a powerful cross-check of the NLL results previously derived using the SCET formalism and provides much of the insight needed for resummation within the traditional QCD approach.
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