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The onset of spin r...
The onset of spin rotation effects in electroproduction of heavy quarkonia
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- Krelina, M. (författare)
- Federico Santa Maria Technical University,Czech Technical University in Prague
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- Nemchik, J. (författare)
- Czech Technical University in Prague,Institute of Experimental Physics SAS
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- Pasechnik, R. (författare)
- 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
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- Cepila, J. (författare)
- Czech Technical University in Prague
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(creator_code:org_t)
- Trieste, Italy : Sissa Medialab, 2019
- 2019
- Engelska.
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Ingår i: European Physical Society Conference on High Energy Physics (EPS-HEP2019). - Trieste, Italy : Sissa Medialab. - 1824-8039. ; 364
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://doi.org/10.2...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
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