التفاصيل البيبلوغرافية
| العنوان: |
Antinucleon-nucleon interaction at next-to-next-to-next-to-leading order in chiral effective field theory |
| المؤلفون: |
Ling-Yun Dai, Johann Haidenbauer, Ulf-G. Meißner |
| المصدر: |
Journal of High Energy Physics, Vol 2017, Iss 7, Pp 1-48 (2017) |
| بيانات النشر: |
SpringerOpen, 2017. |
| سنة النشر: |
2017 |
| المجموعة: |
LCC:Nuclear and particle physics. Atomic energy. Radioactivity |
| مصطلحات موضوعية: |
Chiral Lagrangians, Effective Field Theories, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798 |
| الوصف: |
Abstract Results for the antinucleon-nucleon N ¯ N $$ \left(\overline{N}\;N\right) $$ interaction obtained at next-to-next-to-next-to-leading order in chiral effective field theory (EFT) are reported. A new local regularization scheme is used for the pion-exchange contributions that has been recently suggested and applied in a pertinent study of the N N force within chiral EFT. Furthermore, an alternative strategy for estimating the uncertainty is utilized that no longer depends on a variation of the cutoffs. The low-energy constants associated with the arising contact terms are fixed by a fit to the phase shifts and inelasticities provided by a phase-shift analysis of p ¯ p $$ \overline{p}p $$ scattering data. An excellent description of the N ¯ N $$ \overline{N}\;N $$ amplitudes is achieved at the highest order considered. Moreover, because of the quantitative reproduction of partial waves up to J = 3, there is also a nice agreement on the level of p ¯ p $$ \overline{p}p $$ observables. Specifically, total and integrated elastic and charge-exchange cross sections agree well with the results from the partial-wave analysis up to laboratory energies of 300 MeV, while differential cross sections and analyzing powers are described quantitatively up to 200-250 MeV. The low-energy structure of the N ¯ N $$ \overline{N}\;N $$ amplitudes is also considered and compared to data from antiprotonic hydrogen. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
1029-8479 |
| Relation: |
http://link.springer.com/article/10.1007/JHEP07(2017)078; https://doaj.org/toc/1029-8479 |
| DOI: |
10.1007/JHEP07(2017)078 |
| URL الوصول: |
https://doaj.org/article/9eb390781e4446c3a075ecc9f7aee70f |
| رقم الانضمام: |
edsdoj.9eb390781e4446c3a075ecc9f7aee70f |
| قاعدة البيانات: |
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