Ivanov, Yu. P. and Kopeliovich, B. Z. and Tarasov, A. V. and Huefner, J. (2002) Electroproduction of charmonia off nuclei. PHYSICAL REVIEW C, 66 (2): 024903. ISSN 0556-2813
Full text not available from this repository.Abstract
In a recent publication we calculated elastic charmonium production in ep collisions, employing realistic charmonia wave functions and dipole cross sections, and found good agreement with the data in a wide range of s and Q(2). Using the ingredients from those calculations we calculate exclusive electroproduction of charmonia off nuclei. Here new effects become important, (i) color filtering of the c (c) over bar pair on its trajectory through nuclear matter, (ii) dependence on the finite lifetime of the c (c) over bar fluctuation (coherence length), and (iii) gluon shadowing in a nucleus compared to the one in a nucleon. Total coherent and incoherent cross sections for C, Cu, and Pb as functions of s and Q(2) are presented together with some differential cross sections. The results can be tested with future electron-nucleus colliders or in peripheral collisions of ultrarelativistic heavy ions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | VECTOR-MESONS; COLOR TRANSPARENCY; PARTON SATURATION; COHERENCE LENGTH; SMALL-X; PHOTOPRODUCTION; SCATTERING; QCD; DIFFRACTION; QUARKS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 12 Oct 2021 08:45 |
| Last Modified: | 12 Oct 2021 08:45 |
| URI: | https://pred.uni-regensburg.de/id/eprint/40060 |
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