Light-front approach to axial-vector quarkonium γ * γ * form factors
(2022) In Journal of High Energy Physics 2022(9).- Abstract
In this work, we perform a detailed study of transition form factors for axial- vector meson production via the two-photon fusion process γ*γ* → 1++, with space-like virtual photons in the initial state and a P-wave axial-vector quarkonium in the final state. In this analysis, we employ the formalism of light-front quarkonium wave functions obtained from a solution of the Schrödinger equation for a selection of interquark potentials for QQ¯ interaction. We found the helicity structure and covariant decomposition of the matrix elements that can be generically applied for any qq¯ axial-vector meson γ*γ* → 1++ transition, while our numerical results are given for the... (More)
In this work, we perform a detailed study of transition form factors for axial- vector meson production via the two-photon fusion process γ*γ* → 1++, with space-like virtual photons in the initial state and a P-wave axial-vector quarkonium in the final state. In this analysis, we employ the formalism of light-front quarkonium wave functions obtained from a solution of the Schrödinger equation for a selection of interquark potentials for QQ¯ interaction. We found the helicity structure and covariant decomposition of the matrix elements that can be generically applied for any qq¯ axial-vector meson γ*γ* → 1++ transition, while our numerical results are given for the phenomenologically relevant charmonium χc1 state. We present the helicity form factors as functions of both photon virtualities. We also obtain, that QFLT(Q2, 0)/FTT(Q2, 0) = const.
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- author
- Babiarz, Izabela ; Pasechnik, Roman LU ; Schäfer, Wolfgang and Szczurek, Antoni
- organization
- publishing date
- 2022-09
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Quarkonium, Specific QCD Phenomenology
- in
- Journal of High Energy Physics
- volume
- 2022
- issue
- 9
- article number
- 170
- publisher
- Springer
- external identifiers
-
- scopus:85138552656
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP09(2022)170
- language
- English
- LU publication?
- yes
- id
- fb2ddbab-3bc9-41fd-8426-6703e4dc091b
- date added to LUP
- 2022-12-14 09:56:15
- date last changed
- 2024-04-14 10:18:55
@article{fb2ddbab-3bc9-41fd-8426-6703e4dc091b, abstract = {{<p>In this work, we perform a detailed study of transition form factors for axial- vector meson production via the two-photon fusion process γ<sup>*</sup>γ<sup>*</sup> → 1<sup>++</sup>, with space-like virtual photons in the initial state and a P-wave axial-vector quarkonium in the final state. In this analysis, we employ the formalism of light-front quarkonium wave functions obtained from a solution of the Schrödinger equation for a selection of interquark potentials for QQ¯ interaction. We found the helicity structure and covariant decomposition of the matrix elements that can be generically applied for any qq¯ axial-vector meson γ<sup>*</sup>γ<sup>*</sup> → 1<sup>++</sup> transition, while our numerical results are given for the phenomenologically relevant charmonium χ<sub>c1</sub> state. We present the helicity form factors as functions of both photon virtualities. We also obtain, that QF<sub>LT</sub>(Q<sup>2</sup>, 0)/F<sub>TT</sub>(Q<sup>2</sup>, 0) = const.</p>}}, author = {{Babiarz, Izabela and Pasechnik, Roman and Schäfer, Wolfgang and Szczurek, Antoni}}, issn = {{1029-8479}}, keywords = {{Quarkonium; Specific QCD Phenomenology}}, language = {{eng}}, number = {{9}}, publisher = {{Springer}}, series = {{Journal of High Energy Physics}}, title = {{Light-front approach to axial-vector quarkonium γ <sup>*</sup> γ <sup>*</sup> form factors}}, url = {{http://dx.doi.org/10.1007/JHEP09(2022)170}}, doi = {{10.1007/JHEP09(2022)170}}, volume = {{2022}}, year = {{2022}}, }