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 editorsLappi, Tuomas; Mäntysaari, Heikki; Penttala, Jani

Journal or seriesPhysical Review D

ISSN2470-0010

eISSN2470-0029

Publication year2020

Publication date22/09/2020

Volume102

Issue number5

Article number054020

PublisherAmerican Physical Society (APS)

Publication countryUnited States

Publication languageEnglish

DOIhttps://doi.org/10.1103/PhysRevD.102.054020

Publication open accessOpenly available

Publication channel open accessPartially 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.


Keywordsparticle physics

Free keywordsdeep inelastic scattering; electron-ion collisions; nonrelativistic QCD; QCD in nuclear reactions; quantum chromodynamics


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Ministry reportingYes

Reporting Year2020

JUFO rating2


Last updated on 2024-03-04 at 20:45