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Title: Momentum conservation and unitarity in parton showers and NLL resummation

Journal Article · · Journal of High Energy Physics (Online)
ORCiD logo [1];  [2];  [2]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. TU Dresden (Germany). Inst. of Nuclear and Particle Physics

We present a systematic study of differences between NLL resummation and parton showers. We first construct a Markovian Monte-Carlo algorithm for resummation of additive observables in electron-positron annihilation. Approximations intrinsic to the pure NLL result are then removed, in order to obtain a traditional, momentum and probability conserving parton shower based on the coherent branching formalism. The impact of each approximation is studied, and an overall comparison is made between the parton shower and pure NLL resummation. Differences compared to modern parton-shower algorithms formulated in terms of color dipoles are analyzed.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States); TU Dresden (Germany)
Sponsoring Organization:
USDOE; German Academic Exchange Service (DAAD); German Research Foundation (DFG)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1425581
Alternate ID(s):
OSTI ID: 22738958
Journal Information:
Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 1 Vol. 2018; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (8)

Fitting the Strong Coupling Constant with Soft-Drop Thrust text January 2019
Resummed predictions for jet-resolution scales in multijet production in e+e− annihilation journal April 2020
Multijet merging in a variable flavor number scheme journal July 2019
Non-global logarithms in jet and isolation cone cross sections text January 2018
Non-global logarithms in jet and isolation cone cross sections journal August 2018
Jet Structure Studies in Small Systems journal May 2019
Event generation with Sherpa 2.2 journal January 2019
Jet Structure Studies in Small Systems journal May 2019

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