Momentum conservation and unitarity in parton showers and NLL resummation
Journal Article
·
· Journal of High Energy Physics (Online)
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- 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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