Excited scalar and pseudoscalar mesons in the extended linear sigma model
- We present an in-depth study of masses and decays of excited scalar and pseudoscalar q¯q states in the Extended Linear Sigma Model (eLSM). The model also contains ground-state scalar, pseudoscalar, vector and axial-vector mesons. The main objective is to study the consequences of the hypothesis that the f0(1790) resonance, observed a decade ago by the BES Collaboration and recently by LHCb, represents an excited scalar quarkonium. In addition we also analyse the possibility that the new a0(1950) resonance, observed recently by BABAR, may also be an excited scalar state. Both hypotheses receive justification in our approach although there appears to be some tension between the simultaneous interpretation of f0(1790)/a0(1950) and pseudoscalar mesons η(1295), π(1300), η(1440) and K(1460) as excited q¯q states.
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| Author: | Denis ParganlijaORCiDGND, Francesco GiacosaORCiDGND |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-439460 |
| DOI: | https://doi.org/10.1140/epjc/s10052-017-4962-y |
| ISSN: | 1434-6052 |
| ISSN: | 1434-6044 |
| Pubmed Id: | https://pubmed.ncbi.nlm.nih.gov/28775668 |
| Parent Title (English): | The European physical journal. C, Particles and fields |
| Publisher: | Springer |
| Place of publication: | Berlin ; Heidelberg |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2017/08/21 |
| Date of first Publication: | 2017/07/06 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2017/08/21 |
| Volume: | 77 |
| Issue: | 7, Art. 450 |
| Page Number: | 25 |
| First Page: | 1 |
| Last Page: | 25 |
| Note: | Open Access: This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecomm ons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3. |
| HeBIS-PPN: | 425340945 |
| Institutes: | Physik / Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung 4.0 |
