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Prompt hadroproduction of ηc(1S, 2S) in the kT-factorization approach

Babiarz, Izabela LU ; Pasechnik, Roman LU ; Schäfer, Wolfgang and Szczurek, Antoni (2020) In Journal of High Energy Physics 2020(2).
Abstract

In this work, we present a thorough analysis of ηc(1S, 2S) quarkonia hadroproduction in k⊥-factorisation in the framework of the light-front potential approach for the quarkonium wave function. The off-shell matrix elements for the g*g*ηc(1S, 2S) vertices are derived. We discuss the importance of taking into account the gluon virtualities. We present the transverse momentum distributions of ηc for several models of the unintegrated gluon distributions. Our calculations are performed for four distinct parameterisations for the cc¯ interaction potential consistent with the meson spectra. We compare our results for ηc(1S) to measurements by the LHCb collaboration... (More)

In this work, we present a thorough analysis of ηc(1S, 2S) quarkonia hadroproduction in k⊥-factorisation in the framework of the light-front potential approach for the quarkonium wave function. The off-shell matrix elements for the g*g*ηc(1S, 2S) vertices are derived. We discuss the importance of taking into account the gluon virtualities. We present the transverse momentum distributions of ηc for several models of the unintegrated gluon distributions. Our calculations are performed for four distinct parameterisations for the cc¯ interaction potential consistent with the meson spectra. We compare our results for ηc(1S) to measurements by the LHCb collaboration and present predictions for ηc(2S) production.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
QCD Phenomenology
in
Journal of High Energy Physics
volume
2020
issue
2
article number
37
publisher
Springer
external identifiers
  • scopus:85079048501
ISSN
1029-8479
DOI
10.1007/JHEP02(2020)037
language
English
LU publication?
yes
id
42fb5bb0-2bc4-4a5c-9d17-009bcf38b2fe
date added to LUP
2020-02-19 13:16:00
date last changed
2024-04-17 04:08:00
@article{42fb5bb0-2bc4-4a5c-9d17-009bcf38b2fe,
  abstract     = {{<p>In this work, we present a thorough analysis of η<sub>c</sub>(1S, 2S) quarkonia hadroproduction in k<sub>⊥</sub>-factorisation in the framework of the light-front potential approach for the quarkonium wave function. The off-shell matrix elements for the g<sup>*</sup>g<sup>*</sup>η<sub>c</sub>(1S, 2S) vertices are derived. We discuss the importance of taking into account the gluon virtualities. We present the transverse momentum distributions of η<sub>c</sub> for several models of the unintegrated gluon distributions. Our calculations are performed for four distinct parameterisations for the cc¯ interaction potential consistent with the meson spectra. We compare our results for η<sub>c</sub>(1S) to measurements by the LHCb collaboration and present predictions for η<sub>c</sub>(2S) production.</p>}},
  author       = {{Babiarz, Izabela and Pasechnik, Roman and Schäfer, Wolfgang and Szczurek, Antoni}},
  issn         = {{1029-8479}},
  keywords     = {{QCD Phenomenology}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{Springer}},
  series       = {{Journal of High Energy Physics}},
  title        = {{Prompt hadroproduction of η<sub>c</sub>(1S, 2S) in the k<sub>T</sub>-factorization approach}},
  url          = {{http://dx.doi.org/10.1007/JHEP02(2020)037}},
  doi          = {{10.1007/JHEP02(2020)037}},
  volume       = {{2020}},
  year         = {{2020}},
}