تقرير
Semileptonic tau decays beyond the Standard Model
| العنوان: | Semileptonic tau decays beyond the Standard Model |
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| المؤلفون: | Cirigliano, Vincenzo, Díaz-Calderón, David, Falkowski, Adam, González-Alonso, Martín, Rodríguez-Sánchez, Antonio |
| سنة النشر: | 2021 |
| المجموعة: | High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology |
| الوصف: | Hadronic $\tau$ decays are studied as probe of new physics. We determine the dependence of several inclusive and exclusive $\tau$ observables on the Wilson coefficients of the low-energy effective theory describing charged-current interactions between light quarks and leptons. The analysis includes both strange and non-strange decay channels. The main result is the likelihood function for the Wilson coefficients in the tau sector, based on the up-to-date experimental measurements and state-of-the-art theoretical techniques. The likelihood can be readily combined with inputs from other low-energy precision observables. We discuss a combination with nuclear beta, baryon, pion, and kaon decay data. In particular, we provide a comprehensive and model-independent description of the new physics hints in the combined dataset, which are known under the name of the Cabibbo anomaly. Comment: 58 pages; V2: Table 1 added, final published version |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/JHEP04(2022)152 |
| URL الوصول: | http://arxiv.org/abs/2112.02087 |
| رقم الأكسشن: | edsarx.2112.02087 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/JHEP04(2022)152 |
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