دورية أكاديمية
From pole parameters to line shapes and branching ratios
| العنوان: | From pole parameters to line shapes and branching ratios |
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| المؤلفون: | L. A. Heuser, G. Chanturia, F.-K. Guo, C. Hanhart, M. Hoferichter, B. Kubis |
| المصدر: | European Physical Journal C: Particles and Fields, Vol 84, Iss 6, Pp 1-17 (2024) |
| بيانات النشر: | SpringerOpen, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Astrophysics LCC:Nuclear and particle physics. Atomic energy. Radioactivity |
| مصطلحات موضوعية: | Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798 |
| الوصف: | Abstract Resonances are uniquely characterized by their complex pole locations and the corresponding residues. In practice, however, resonances are typically identified experimentally as structures in invariant mass distributions, with branching fractions of resonances determined as ratios of count rates. To make contact between these quantities it is necessary to connect line shapes and resonance parameters. In this work we propose such a connection and illustrate the formalism with detailed studies of the $$\rho (770)$$ ρ ( 770 ) and $$f_0(500)$$ f 0 ( 500 ) resonances. Based on the line shapes inferred from the resonance parameters along these lines, expressions for partial widths and branching ratios are derived and compared to other approaches in the literature. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1434-6052 |
| Relation: | https://doaj.org/toc/1434-6052 |
| DOI: | 10.1140/epjc/s10052-024-12884-6 |
| URL الوصول: | https://doaj.org/article/c121df6ad1d946309bf2a8a1f282ffed |
| رقم الأكسشن: | edsdoj.121df6ad1d946309bf2a8a1f282ffed |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 14346052 |
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| DOI: | 10.1140/epjc/s10052-024-12884-6 |