| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Analysis of the low-energy π-p charge-exchange data |
| Autor/-in: | Matsinos, Evangelos Rasche, G. |
| DOI: | 10.1142/S0217751X13500395 |
| Erschienen in: | International Journal of Modern Physics A |
| Band(Heft): | 28 |
| Heft: | 12 |
| Seite(n): | 1350039 |
| Erscheinungsdatum: | 2013 |
| Verlag / Hrsg. Institution: | World Scientific Publishing |
| ISSN: | 0217-751X 1793-656X |
| Sprache: | Englisch |
| Fachgebiet (DDC): | 530: Physik |
| Zusammenfassung: | We analyze the charge-exchange (CX) measurements π-p→π0n below pion laboratory kinetic energy of 100 MeV. After the removal of five degrees of freedom from the initial database, we combine it with the truncated π+p database [E. Matsinos and G. Rasche, J. Mod. Phys.3, 1369 (2012)] and fit the ETH model [P. F. A. Goudsmit, H. J. Leisi, E. Matsinos, B. L. Birbrair and A. B. Gridnev, Nucl. Phys. A575, 673 (1994)] to the resulting data. The set of the parameter values of the ETH model, as well as the predictions derived on their basis for the hadronic phase shifts and for the low-energy πN constants, are significantly different from the results obtained in the analysis of the truncated π±p elastic-scattering databases. The main difference in the hadronic phase shifts occurs in delta_0^{1/2}. We discuss the implications of these findings in terms of the violation of the isospin invariance in the hadronic part of the πN interaction. The effect observed amounts to the level of 7–8% in the CX scattering amplitude below 70 MeV. The results and conclusions of this study agree well with those obtained in the mid 1990s, when the isospin invariance was first tested by using πN experimental data, and disagree with the predictions obtained within the framework of the heavy-baryon Chiral-Perturbation Theory. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/15774 |
| Volltext Version: | Publizierte Version |
| Lizenz (gemäss Verlagsvertrag): | Lizenz gemäss Verlagsvertrag |
| Departement: | School of Engineering |
| Organisationseinheit: | Institut für Angewandte Mathematik und Physik (IAMP) Institut für Mechatronische Systeme (IMS) |
| Enthalten in den Sammlungen: | Publikationen School of Engineering |
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Matsinos, E., & Rasche, G. (2013). Analysis of the low-energy π-p charge-exchange data. International Journal of Modern Physics A, 28(12), 1350039. https://doi.org/10.1142/S0217751X13500395
Matsinos, E. and Rasche, G. (2013) ‘Analysis of the low-energy π-p charge-exchange data’, International Journal of Modern Physics A, 28(12), p. 1350039. Available at: https://doi.org/10.1142/S0217751X13500395.
E. Matsinos and G. Rasche, “Analysis of the low-energy π-p charge-exchange data,” International Journal of Modern Physics A, vol. 28, no. 12, p. 1350039, 2013, doi: 10.1142/S0217751X13500395.
MATSINOS, Evangelos und G. RASCHE, 2013. Analysis of the low-energy π-p charge-exchange data. International Journal of Modern Physics A. 2013. Bd. 28, Nr. 12, S. 1350039. DOI 10.1142/S0217751X13500395
Matsinos, Evangelos, and G. Rasche. 2013. “Analysis of the Low-Energy π-P Charge-Exchange Data.” International Journal of Modern Physics A 28 (12): 1350039. https://doi.org/10.1142/S0217751X13500395.
Matsinos, Evangelos, and G. Rasche. “Analysis of the Low-Energy π-P Charge-Exchange Data.” International Journal of Modern Physics A, vol. 28, no. 12, 2013, p. 1350039, https://doi.org/10.1142/S0217751X13500395.
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