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The onset of spin r...
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Krelina, M.Federico Santa Maria Technical University,Czech Technical University in Prague
(author)
The onset of spin rotation effects in electroproduction of heavy quarkonia
- Article/chapterEnglish2019
Publisher, publication year, extent ...
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Trieste, Italy :Sissa Medialab,2019
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LIBRIS-ID:oai:lup.lub.lu.se:5b66381a-9b37-4540-8e5c-0a662693f71f
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https://lup.lub.lu.se/record/5b66381a-9b37-4540-8e5c-0a662693f71fURI
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https://doi.org/10.22323/1.364.0496DOI
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Language:English
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Summary in:English
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Subject category:kon swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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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 Ψ0(2S) cross section by a factor of 2 − 3 and therefore cause a substantial increase of the Ψ0(2S)-to-J/Ψ(1S) ratio improving the description of experimental data.
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Nemchik, J.Czech Technical University in Prague,Institute of Experimental Physics SAS
(author)
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Pasechnik, R.Lund University,Lunds universitet,Teoretisk partikelfysik - Geonomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Theoretical Particle Physics - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science,Federal University of Santa Catarina,Nuclear Physics Institute of the Academy of Sciences, Czech Republic(Swepub:lu)thep-rnp
(author)
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Cepila, J.Czech Technical University in Prague
(author)
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Federico Santa Maria Technical UniversityCzech Technical University in Prague
(creator_code:org_t)
Related titles
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In:European Physical Society Conference on High Energy Physics (EPS-HEP2019)Trieste, Italy : Sissa Medialab3641824-8039
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