Non-relativistic quantum chromodynamics in parton showers
Cooke, Naomi ; Ilten, Philip ; Lönnblad, Leif LU
and Mrenna, Stephen
(2024)
In European Physical Journal C
84(4).
- Abstract
Measurements of quarkonia isolation in jets at the Large Hadron Collider (LHC) have been shown to disagree with fixed-order non-relativistic quantum chromodynamics (NRQCD) calculations, even at higher orders. Calculations using the fragmenting jet function formalism are able to better describe data but cannot provide full event-level predictions. In this work we provide an alternative model via NRQCD production of quarkonia in a timelike parton shower. We include this model in the Pythia 8 event generator and validate our parton-shower implementation against analytic forms of the relevant fragmentation functions. Finally, we make inclusive predictions of quarkonia production for the decay of the standard-model Higgs boson.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/cc623ff9-8e8f-4f87-aef3-f6f2d479fa91
- author
- Cooke, Naomi
; Ilten, Philip
; Lönnblad, Leif
LU
and Mrenna, Stephen
- organization
- publishing date
- 2024-04
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal C
- volume
- 84
- issue
- 4
- article number
- 432
- publisher
- Springer
- external identifiers
-
- scopus:85191237876
- ISSN
- 1434-6044
- DOI
- 10.1140/epjc/s10052-024-12760-3
- language
- English
- LU publication?
- yes
- id
- cc623ff9-8e8f-4f87-aef3-f6f2d479fa91
- date added to LUP
- 2024-05-06 08:59:03
- date last changed
- 2024-05-06 08:59:03
@article{cc623ff9-8e8f-4f87-aef3-f6f2d479fa91,
abstract = {{<p>Measurements of quarkonia isolation in jets at the Large Hadron Collider (LHC) have been shown to disagree with fixed-order non-relativistic quantum chromodynamics (NRQCD) calculations, even at higher orders. Calculations using the fragmenting jet function formalism are able to better describe data but cannot provide full event-level predictions. In this work we provide an alternative model via NRQCD production of quarkonia in a timelike parton shower. We include this model in the Pythia 8 event generator and validate our parton-shower implementation against analytic forms of the relevant fragmentation functions. Finally, we make inclusive predictions of quarkonia production for the decay of the standard-model Higgs boson.</p>}},
author = {{Cooke, Naomi and Ilten, Philip and Lönnblad, Leif and Mrenna, Stephen}},
issn = {{1434-6044}},
language = {{eng}},
number = {{4}},
publisher = {{Springer}},
series = {{European Physical Journal C}},
title = {{Non-relativistic quantum chromodynamics in parton showers}},
url = {{http://dx.doi.org/10.1140/epjc/s10052-024-12760-3}},
doi = {{10.1140/epjc/s10052-024-12760-3}},
volume = {{84}},
year = {{2024}},
}