The onset of spin rotation effects in electroproduction of heavy quarkonia

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F20%3A00344946" target="_blank" >RIV/68407700:21340/20:00344946 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.22323/1.364.0496" target="_blank" >https://doi.org/10.22323/1.364.0496</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.22323/1.364.0496" target="_blank" >10.22323/1.364.0496</a>

Result language
angličtina
Original language name
The onset of spin rotation effects in electroproduction of heavy quarkonia
Original language description
We discuss the Melosh spin rotation effects in diffractive photo- and electroproduction of heavy quarkonia off a nucleon target in the dipole picture. The quarkonium light-front wave functions are obtained in the Schroedinger equation based formalism using the realistic interquark interaction potentials. A strong onset of spin rotation effects predicted in the case of J/ψ(1S) photoproduction enables us to reach a reasonable agreement with the available data. In the case of radially excited 2S and 3S states these effects are even stronger as a direct manifestation of the nodal structure of their wave functions. In particular, the spin effects enhance the Ψ'(2S) cross section by a factor of 2-3 and therefore cause a substantial increase of the Ψ'(2S)-to-J/Ψ(1S) ratio improving the description of experimental data.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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