期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 10, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP10(2017)093
关键词
Jets; QCD Phenomenology
资金
- US Department of Energy [DE-AC02-76SF00515, DE-AC02-07CH11359]
- European Commission [PITN-GA-2012-315877, PITN-GA-2012-316704]
- ERC [340983]
We present a parton shower which implements the DGLAP evolution of parton densities and fragmentation functions at next-to-leading order precision up to effects stemming from local four-momentum conservation. The Monte-Carlo simulation is based on including next-to-leading order collinear splitting functions in an existing parton shower and combining their soft enhanced contributions with the corresponding terms at leading order. Soft double counting is avoided by matching to the soft eikonal. Example results from two independent realizations of the algorithm, implemented in the two event generation frameworks PYTHIA and SHERPA, illustrate the improved precision of the new formalism.
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