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Some dipole shower studies

delete2018-03-16
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C
Cabouat, Baptiste *
T
Torbjörn Sjöstrand
DOI:10.1140/epjc/s10052-018-5645-zdelete
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摘要

摘要

En 中文
Parton showers have become a standard component in the description of high-energy collisions. Nowadays most final-state ones are of the dipole character, wherein a pair of partons branches into three, with energy and momentum preserved inside this subsystem. For initial-state showers a dipole picture is also possible and commonly used, but the older global-recoil strategy remains a valid alternative, wherein larger groups of partons share the energy-momentum preservation task. In this article we introduce and implement a dipole picture also for initial-state radiation in Pythia, and compare with the existing global-recoil one, and with data. For the case of Deeply Inelastic Scattering we can directly compare with matrix element expressions and show that the dipole picture gives a very good description over the whole phase space, at least for the first branching.
Keyword:
MONTE-CARLO-SIMULATION
PARTON
SCATTERING
MODEL
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期刊

European Physical Journal C 封面图
European Physical Journal C
IF:
4.8
论文数:
1.8W
被引数:
4.7W

机构

L
lund university
学者数:
4.1W
论文数: 3.9W
被引数: 54
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