Academic Journal
Note on the definitions of branching ratios of overlapping resonances
| العنوان: | Note on the definitions of branching ratios of overlapping resonances |
|---|---|
| المؤلفون: | Burkert, V., Crede, V., Klempt, E., Nikonov, K.V., Oller, J.A., Peláez Sagredo, José Ramón, Ruiz De Elvira Carrascal, Jacobo, Sarantsev, A., Tiator, L., Thoma, U., Workman, R. |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2023 |
| المجموعة: | Universidad Complutense de Madrid (UCM): E-Prints Complutense |
| مصطلحات موضوعية: | 539.1, Partial decay widths, Particle properties, Gamma-p, Partículas, 2207 Física Atómica y Nuclear |
| الوصف: | 2023 Descuento SCOAP ; Branching ratios for the decay of hadrons with large width or near thresholds depend on their definition. We test different definitions and show that rather different branching ratios can be obtained. For wide resonances and for sequential decays with wide intermediate resonances, integration over the spectral functions is mandatory. The tests are performed exploiting the latest solution of the Bonn-Gatchina multichannel analysis and published values for residues of light scalar mesons. For a resonance overlapping with a threshold, in case its pole lies in a non-adjacent sheet, we show how the total width, needed for the branching ratios, does not correspond to the imaginary part of the pole position. We use the Madrid-Krakow dispersive parameterizations to illustrate this situation with the f_0(980). ; National Natural Science Foundation of China ; German Research Foundation ; Ministry of Culture and Science of the State of Northrhine Westphalia ; United States Department of Energy ; Ministerio de Ciencia e Innovación (España) ; Ministerio de Economia y Competitividad (España) ; Unión Europea. H2020 ; Depto. de Física Teórica ; Fac. de Ciencias Físicas ; Instituto de Física de Partículas y del Cosmos (IPARCOS) ; TRUE ; pub ; Descuento UCM |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0370-2693 1873-2445 |
| Relation: | 12070131001; 196253076 - TRR 110; NW21-024-C; DE–SC–0016582; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106080GB-C21/ES/FISICA HADRONICA Y CROMODINAMICA CUANTICA: DESDE LAS BAJAS ENERGIAS HASTA EL LHC/; RYC2019-027605I; PID2019–106080GB-C22; 824093; https://hdl.handle.net/20.500.14352/102232; ciencedirect.com/science/article/pii/S0370269323004045; https://arxiv.org/abs/2207.08472 |
| DOI: | 10.1016/j.physletb.2023.138070 |
| الاتاحة: | https://hdl.handle.net/20.500.14352/102232 https://doi.org/10.1016/j.physletb.2023.138070 https://arxiv.org/abs/2207.08472 |
| Rights: | Attribution 4.0 International ; http://creativecommons.org/licenses/by/4.0/ ; open access |
| رقم الانضمام: | edsbas.1C75265C |
| قاعدة البيانات: | BASE |
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