The effect of the in-medium Θ+ pentaquark on the kaon optical potential
- The kaon nuclear optical potential is studied including the effect of the Θ+ pentaquark. The one-nucleon contribution is obtained using an extension of the Jülich meson-exchange potential as bare kaon–nucleon interaction. Significant differences between a fully self-consistent calculation and the usually employed low-density Tρ approach are observed. The influence of the one-nucleon absorption process, KN→Θ+, on the kaon optical potential is negligible due to the small width of the pentaquark. In contrast, the two-nucleon mechanism, KNN→Θ+N, estimated from the coupling of the pentaquark to a two-meson cloud, provides the required amount of additional kaon absorption to reconcile with data the systematically low K+-nucleus reaction cross sections found by the theoretical models.
Author: | Laura TolósORCiD, Daniel Cabrera, Angels RamosORCiD, Artur PollsORCiD |
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URN: | urn:nbn:de:hebis:30:3-762538 |
DOI: | https://doi.org/10.1016/j.physletb.2005.10.061 |
ISSN: | 0370-2693 |
Parent Title (English): | Physics Letters B |
Publisher: | Elsevier |
Place of publication: | Amsterdam |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2005/11/15 |
Date of first Publication: | 2005/11/15 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2023/10/06 |
Tag: | Heavy-ion collisions; K+-nucleus interaction; KN interaction; Θ+ pentaquark |
Volume: | 632.2006 |
Issue: | 2 |
Page Number: | 7 |
First Page: | 219 |
Last Page: | 225 |
HeBIS-PPN: | 513363661 |
Institutes: | Physik |
Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS) | |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Sammlungen: | Universitätspublikationen |
Licence (German): | Creative Commons - Namensnennung 3.0 |