A1 Journal article (refereed)
Relativistic corrections to the vector meson light front wave function (2020)
Lappi, T., Mäntysaari, H., & Penttala, J. (2020). Relativistic corrections to the vector meson light front wave function. Physical Review D, 102(5), Article 054020. https://doi.org/10.1103/PhysRevD.102.054020
JYU authors or editors
Publication details
All authors or editors: Lappi, Tuomas; Mäntysaari, Heikki; Penttala, Jani
Journal or series: Physical Review D
ISSN: 2470-0010
eISSN: 2470-0029
Publication year: 2020
Publication date: 22/09/2020
Volume: 102
Issue number: 5
Article number: 054020
Publisher: American Physical Society (APS)
Publication country: United States
Publication language: English
DOI: https://doi.org/10.1103/PhysRevD.102.054020
Publication open access: Openly available
Publication channel open access: Partially open access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/71909
Web address of parallel published publication (pre-print): https://arxiv.org/abs/2006.02830
Abstract
We compute a light front wave function for heavy vector mesons based on long-distance matrix elements constrained by decay width analyses in the nonrelativistic QCD framework. Our approach provides a systematic expansion of the wave function in quark velocity. The first relativistic correction included in our calculation is found to be significant and crucial for a good description of the HERA exclusive J / ψ production data. When looking at cross section ratios between nuclear and proton targets, the wave function dependence does not cancel out exactly. In particular the fully nonrelativistic limit is found not to be a reliable approximation even in this ratio. The important role of the Melosh rotation to express the rest frame wave function on the light front is illustrated.
Keywords: particle physics
Free keywords: deep inelastic scattering; electron-ion collisions; nonrelativistic QCD; QCD in nuclear reactions; quantum chromodynamics
Contributing organizations
Related projects
- Saturation phenomena in high energy scattering
- Mäntysaari, Heikki
- Research Council of Finland
- Frontiers of high energy QCD
- Lappi, Tuomas
- Research Council of Finland
- Applications of perturbative Quantum Chromo Dynamics in high-energy nuclear collisions (Initial funding for research costs of Academy Research Fellow)
- Paukkunen, Hannu
- Research Council of Finland
- CGCglasmaQGP The nonlinear high energy regime of Quantum Chromodynamics
- Lappi, Tuomas
- European Commission
Ministry reporting: Yes
Reporting Year: 2020
JUFO rating: 2