Hadroproduction of scalar P -wave quarkonia in the light-front kT -factorization approach
(2020) In Journal of High Energy Physics 2020(6).- Abstract
In this work, we present a thorough analysis of scalar P -wave χQ0, Q = c, b quarkonia electromagnetic form factors for the γ∗γ∗→ χQ0 couplings, as well as their hadroproduction observables in k⊥-factorisation using the light-front (LF) potential approach for the quarkonium wave function. The electromagnetic form factors are presented as functions of photon virtualities. We discuss the role of the Melosh spin-rotation and relativistic corrections estimated by comparing our results with those in the standard nonrelativistic QCD (NRQCD) approach. Theoretical uncertainties of our approach are found by performing the analysis with two different unintegrated gluon densities and with five... (More)
In this work, we present a thorough analysis of scalar P -wave χQ0, Q = c, b quarkonia electromagnetic form factors for the γ∗γ∗→ χQ0 couplings, as well as their hadroproduction observables in k⊥-factorisation using the light-front (LF) potential approach for the quarkonium wave function. The electromagnetic form factors are presented as functions of photon virtualities. We discuss the role of the Melosh spin-rotation and relativistic corrections estimated by comparing our results with those in the standard nonrelativistic QCD (NRQCD) approach. Theoretical uncertainties of our approach are found by performing the analysis with two different unintegrated gluon densities and with five distinct models of the QQ¯ interaction potentials consistent with the meson spectra. The results for the rapidity and transverse momentum distributions of χQ0 produced in high-energy pp collisions at s = 13 TeV are shown.
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- author
- Babiarz, Izabela LU ; Pasechnik, Roman LU ; Schäfer, Wolfgang and Szczurek, Antoni
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- QCD Phenomenology
- in
- Journal of High Energy Physics
- volume
- 2020
- issue
- 6
- article number
- 101
- publisher
- Springer
- external identifiers
-
- scopus:85086589528
- ISSN
- 1126-6708
- DOI
- 10.1007/JHEP06(2020)101
- language
- English
- LU publication?
- yes
- id
- a9fbc1ec-2b08-4766-84a1-a07493ed0b96
- date added to LUP
- 2020-12-29 15:23:25
- date last changed
- 2024-04-17 22:12:46
@article{a9fbc1ec-2b08-4766-84a1-a07493ed0b96,
abstract = {{<p>In this work, we present a thorough analysis of scalar P -wave χ<sub>Q0</sub>, Q = c, b quarkonia electromagnetic form factors for the γ<sup>∗</sup>γ<sup>∗</sup>→ χ<sub>Q0</sub> couplings, as well as their hadroproduction observables in k<sub>⊥</sub>-factorisation using the light-front (LF) potential approach for the quarkonium wave function. The electromagnetic form factors are presented as functions of photon virtualities. We discuss the role of the Melosh spin-rotation and relativistic corrections estimated by comparing our results with those in the standard nonrelativistic QCD (NRQCD) approach. Theoretical uncertainties of our approach are found by performing the analysis with two different unintegrated gluon densities and with five distinct models of the QQ¯ interaction potentials consistent with the meson spectra. The results for the rapidity and transverse momentum distributions of χ<sub>Q0</sub> produced in high-energy pp collisions at s = 13 TeV are shown.</p>}},
author = {{Babiarz, Izabela and Pasechnik, Roman and Schäfer, Wolfgang and Szczurek, Antoni}},
issn = {{1126-6708}},
keywords = {{QCD Phenomenology}},
language = {{eng}},
number = {{6}},
publisher = {{Springer}},
series = {{Journal of High Energy Physics}},
title = {{Hadroproduction of scalar P -wave quarkonia in the light-front k<sub>T</sub> -factorization approach}},
url = {{http://dx.doi.org/10.1007/JHEP06(2020)101}},
doi = {{10.1007/JHEP06(2020)101}},
volume = {{2020}},
year = {{2020}},
}