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Logarithmic accuracy of angular-ordered parton showers
We study the logarithmic accuracy of angular-ordered parton showers by considering the singular limits of multiple emission matrix elements. This allows us to consider different choices for the evolution variable and propose a new choice which has both the correct logarithmic behaviour and improved...
| Autores principales: | , , , |
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| Publicado: |
2019
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1007/JHEP04(2020)019 http://cds.cern.ch/record/2783312 |
| Sumario: | We study the logarithmic accuracy of angular-ordered parton showers by considering the singular limits of multiple emission matrix elements. This allows us to consider different choices for the evolution variable and propose a new choice which has both the correct logarithmic behaviour and improved performance away from the singular regions. In particular the description of e$^{+}$e$^{−}$ event shapes in the non-logarithmic region is significantly improved. |
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