Calculating the primary Lund Jet Plane density
(2020) In Journal of High Energy Physics 2020(10).- Abstract
The Lund-jet plane has recently been proposed as a powerful jet substructure tool with a broad range of applications. In this paper, we provide an all-order single logarithmic calculation of the primary Lund-plane density in Quantum Chromodynamics, including contributions from the running of the coupling, collinear effects for the leading parton, and soft logarithms that account for large-angle and clustering effects. We also identify a new source of clustering logarithms close to the boundary of the jet, deferring their resummation to future work. We then match our all-order results to exact next-to-leading order predictions. For phenomenological applications, we supplement our perturbative calculation with a Monte Carlo estimate of... (More)
The Lund-jet plane has recently been proposed as a powerful jet substructure tool with a broad range of applications. In this paper, we provide an all-order single logarithmic calculation of the primary Lund-plane density in Quantum Chromodynamics, including contributions from the running of the coupling, collinear effects for the leading parton, and soft logarithms that account for large-angle and clustering effects. We also identify a new source of clustering logarithms close to the boundary of the jet, deferring their resummation to future work. We then match our all-order results to exact next-to-leading order predictions. For phenomenological applications, we supplement our perturbative calculation with a Monte Carlo estimate of non-perturbative corrections. The precision of our final predictions for the Lund-plane density is 5−7% at high transverse momenta, worsening to about 20% at the lower edge of the perturbative region, corresponding to transverse momenta of about 5 GeV. We compare our results to a recent measurement by the ATLAS collaboration at the Large-Hadron Collider, revealing good agreement across the perturbative domain, i.e. down to about 5 GeV.
(Less)
- author
- Lifson, Andrew LU ; Salam, Gavin P. and Soyez, Grégory
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Jets, QCD Phenomenology
- in
- Journal of High Energy Physics
- volume
- 2020
- issue
- 10
- article number
- 170
- publisher
- Springer
- external identifiers
-
- scopus:85094189782
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP10(2020)170
- language
- English
- LU publication?
- yes
- id
- c6419d6c-641b-4156-b896-6c406a73bf69
- date added to LUP
- 2020-11-09 11:26:17
- date last changed
- 2024-03-20 18:35:47
@article{c6419d6c-641b-4156-b896-6c406a73bf69,
abstract = {{<p>The Lund-jet plane has recently been proposed as a powerful jet substructure tool with a broad range of applications. In this paper, we provide an all-order single logarithmic calculation of the primary Lund-plane density in Quantum Chromodynamics, including contributions from the running of the coupling, collinear effects for the leading parton, and soft logarithms that account for large-angle and clustering effects. We also identify a new source of clustering logarithms close to the boundary of the jet, deferring their resummation to future work. We then match our all-order results to exact next-to-leading order predictions. For phenomenological applications, we supplement our perturbative calculation with a Monte Carlo estimate of non-perturbative corrections. The precision of our final predictions for the Lund-plane density is 5−7% at high transverse momenta, worsening to about 20% at the lower edge of the perturbative region, corresponding to transverse momenta of about 5 GeV. We compare our results to a recent measurement by the ATLAS collaboration at the Large-Hadron Collider, revealing good agreement across the perturbative domain, i.e. down to about 5 GeV.</p>}},
author = {{Lifson, Andrew and Salam, Gavin P. and Soyez, Grégory}},
issn = {{1029-8479}},
keywords = {{Jets; QCD Phenomenology}},
language = {{eng}},
number = {{10}},
publisher = {{Springer}},
series = {{Journal of High Energy Physics}},
title = {{Calculating the primary Lund Jet Plane density}},
url = {{http://dx.doi.org/10.1007/JHEP10(2020)170}},
doi = {{10.1007/JHEP10(2020)170}},
volume = {{2020}},
year = {{2020}},
}