| Autor: |
Ikeno, Natsumi, Nishi, Takahiro, Itahashi, Kenta, Nose-Togawa, Naoko, Tani, Akari, Hirenzaki, Satoru |
| Předmět: |
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| Zdroj: |
Progress of Theoretical & Experimental Physics: PTEP; Mar2023, Vol. 2023 Issue 3, p1-13, 13p |
| Abstrakt: |
We investigate the possibility of determining the value of the pion–nucleon sigma term σπ N precisely by the experimental observables of deeply bound pionic atoms. We discuss the sensitivity of the observables to σπ N and take into account the typical errors of up-to-date experiments on deeply bound pionic atoms. We find that the gap in the binding energies and the width of the deeply bound pionic states are good observables for σπ N value determination with experimental data. We also discuss the expected difficulties for the accurate determination of the value of σπ N due to the correlation between the σ term and the potential parameter in the pion–nucleus optical potential. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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