التفاصيل البيبلوغرافية
| العنوان: |
Anomalies in global SMEFT analyses. A case study of first-row CKM unitarity |
| المؤلفون: |
Vincenzo Cirigliano, Wouter Dekens, Jordy de Vries, Emanuele Mereghetti, Tom Tong |
| المصدر: |
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-69 (2024) |
| بيانات النشر: |
SpringerOpen, 2024. |
| سنة النشر: |
2024 |
| المجموعة: |
LCC:Nuclear and particle physics. Atomic energy. Radioactivity |
| مصطلحات موضوعية: |
SMEFT, CKM Parameters, Electroweak Precision Physics, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798 |
| الوصف: |
Abstract Recent developments in the Standard Model analysis of semileptonic charged-current processes involving light quarks have revealed ~ 3σ tensions in Cabibbo universality tests involving meson, neutron, and nuclear beta decays. In this paper, we explore beyond the Standard Model explanations of this so-called Cabibbo Angle Anomaly in the framework of the Standard Model Effective Field Theory (SMEFT), including not only low-energy charged current processes (‘L’), but also electroweak precision observables (‘EW’) and Drell-Yan collider processes (‘C’) that probe the same underlying physics across a broad range of energy scales. The resulting ‘CLEW’ framework not only allows one to test explanations of the Cabibbo Angle Anomaly, but is set up to provide near model-independent analyses with minimal assumptions on the flavor structure of the SMEFT operators. Besides the global analysis, we consider a large number of simpler scenarios, each with a subset of SMEFT operators, and investigate how much they improve upon the Standard Model fit. We find that the most favored scenarios, as judged by the Akaike Information Criterion, are those that involve right-handed charged currents. Additional interactions, namely oblique operators, terms modifying the Fermi constant, and operators involving right-handed neutral currents, play a role if the CDF determination of the W mass is included in the analysis. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
1029-8479 |
| Relation: |
https://doaj.org/toc/1029-8479 |
| DOI: |
10.1007/JHEP03(2024)033 |
| URL الوصول: |
https://doaj.org/article/f0cd8beda5b140708d02b769f66d03e3 |
| رقم الانضمام: |
edsdoj.f0cd8beda5b140708d02b769f66d03e3 |
| قاعدة البيانات: |
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