Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-01-28
JHEP 0812:010,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
60 pages, 22 figures, v2: corrected typos, added references
Scientific paper
10.1088/1126-6708/2008/12/010
We show how many contemporary issues in event generation can be recast in terms of partonic calculations with a matching scale. This framework is called GenEvA, and a key ingredient is a new notion of phase space which avoids the problem of phase space double-counting by construction and includes a built-in definition of a matching scale. This matching scale can be used to smoothly merge any partonic calculation with a parton shower. The best partonic calculation for a given region of phase space can be determined through physics considerations alone, independent of the algorithmic details of the merging. As an explicit example, we construct a positive-weight partonic calculation for e+e- -> n jets at next-to-leading order (NLO) with leading-logarithmic (LL) resummation. We improve on the NLO/LL result by adding additional higher-multiplicity tree-level (LO) calculations to obtain a merged NLO/LO/LL result. These results are implemented using a new phase space generator introduced in a companion paper [arXiv:0801.4028].
Bauer Christian W.
Tackmann Frank J.
Thaler Jesse
No associations
LandOfFree
GenEvA (I): A new framework for event generation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with GenEvA (I): A new framework for event generation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and GenEvA (I): A new framework for event generation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-184960