科研之友
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摘要
A framework is presented for including second-order perturbative corrections to the radiation patterns of parton showers. The formalism allows to combine O(alpha(2)(s))-corrected iterated 2 -> 3 kernels for "ordered" gluon emissions with tree-level 2 -> 4 kernels for "unordered" ones. The combined Sudakov evolution kernel is thus accurate to O(alpha(2)(s)). As a first step towards a full-fledged implementation of these ideas, we develop an explicit implementation of 2 -> 4shower branchings in this letter.
- 出版日期2017-8-10
