Sector showers for hadron collisions
Abstract In conventional parton showers (including ones based on dipoles/antennae), a given (Born + m)-parton configuration can typically be reached via O(m!) different “shower histories”. In the context of matrix-element-correction and merging procedures, accounting for these histories mandates fai...
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doaj-e5a50189fb2744f39d95cf25056b83552020-11-25T03:25:50ZengSpringerOpenJournal of High Energy Physics1029-84792020-07-012020715810.1007/JHEP07(2020)032Sector showers for hadron collisionsHelen Brooks0Christian T Preuss1Peter Skands2School of Physics and Astronomy, Monash UniversitySchool of Physics and Astronomy, Monash UniversitySchool of Physics and Astronomy, Monash UniversityAbstract In conventional parton showers (including ones based on dipoles/antennae), a given (Born + m)-parton configuration can typically be reached via O(m!) different “shower histories”. In the context of matrix-element-correction and merging procedures, accounting for these histories mandates fairly complex and resource-intensive algorithms. A so far little-explored alternative in the shower context is to divide the branching phase spaces into distinct “sectors”, each of which only receives contributions from a single branching kernel. This has a number of consequences including making the shower operator bijective; i.e., each parton configuration now has a single unique “inverse”. As a first step towards developing a full-fledged matrix-element-correction and merging procedure based on such showers, we here extend the sector approach for antenna showers to hadron-hadron collisions, including mass and helicity dependence.http://link.springer.com/article/10.1007/JHEP07(2020)032QCD PhenomenologyPhenomenological Models |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Helen Brooks Christian T Preuss Peter Skands |
spellingShingle |
Helen Brooks Christian T Preuss Peter Skands Sector showers for hadron collisions Journal of High Energy Physics QCD Phenomenology Phenomenological Models |
author_facet |
Helen Brooks Christian T Preuss Peter Skands |
author_sort |
Helen Brooks |
title |
Sector showers for hadron collisions |
title_short |
Sector showers for hadron collisions |
title_full |
Sector showers for hadron collisions |
title_fullStr |
Sector showers for hadron collisions |
title_full_unstemmed |
Sector showers for hadron collisions |
title_sort |
sector showers for hadron collisions |
publisher |
SpringerOpen |
series |
Journal of High Energy Physics |
issn |
1029-8479 |
publishDate |
2020-07-01 |
description |
Abstract In conventional parton showers (including ones based on dipoles/antennae), a given (Born + m)-parton configuration can typically be reached via O(m!) different “shower histories”. In the context of matrix-element-correction and merging procedures, accounting for these histories mandates fairly complex and resource-intensive algorithms. A so far little-explored alternative in the shower context is to divide the branching phase spaces into distinct “sectors”, each of which only receives contributions from a single branching kernel. This has a number of consequences including making the shower operator bijective; i.e., each parton configuration now has a single unique “inverse”. As a first step towards developing a full-fledged matrix-element-correction and merging procedure based on such showers, we here extend the sector approach for antenna showers to hadron-hadron collisions, including mass and helicity dependence. |
topic |
QCD Phenomenology Phenomenological Models |
url |
http://link.springer.com/article/10.1007/JHEP07(2020)032 |
work_keys_str_mv |
AT helenbrooks sectorshowersforhadroncollisions AT christiantpreuss sectorshowersforhadroncollisions AT peterskands sectorshowersforhadroncollisions |
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1724595386371276800 |