دورية أكاديمية
Challenging beyond-the-standard-model solutions to the fine-structure anomaly in heavy muonic atoms
العنوان: | Challenging beyond-the-standard-model solutions to the fine-structure anomaly in heavy muonic atoms |
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المؤلفون: | K.A. Beyer, I.A. Valuev, C.H. Keitel, M. Tamburini, N.S. Oreshkina |
المصدر: | Physics Letters B, Vol 854, Iss , Pp 138746- (2024) |
بيانات النشر: | Elsevier, 2024. |
سنة النشر: | 2024 |
المجموعة: | LCC:Physics |
مصطلحات موضوعية: | Muonic atoms, Beyond the standard model, Fine structure anomaly, Physics, QC1-999 |
الوصف: | The leading-order contribution of a new boson to the muonic fine-structure anomaly, which refers to a discrepancy between the predicted transition energies and spectroscopic measurements of μ−90Zr, μ−120Sn, and μ−208Pb, is investigated. We consider bosons of scalar, vector, pseudoscalar, and pseudovector type. Spin-dependent couplings sourced by pseudoscalars or pseudovectors are disfavoured as solutions to the anomaly due to the nuclei in question having vanishing angular momentum. Spin-independent interactions resulting from scalar or vector exchange are also disfavoured because no parameter space exists to simultaneously fit different atomic states of the same nucleus. Therefore, we conclude that a ‘Beyond-the-Standard-Model’ resolution of the muonic fine-structure anomaly is generally disfavoured, and the first-order solution by a single new boson is excluded. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 0370-2693 |
Relation: | http://www.sciencedirect.com/science/article/pii/S0370269324003046; https://doaj.org/toc/0370-2693 |
DOI: | 10.1016/j.physletb.2024.138746 |
URL الوصول: | https://doaj.org/article/2d6651a01848447ba242e2491e4f8c07 |
رقم الأكسشن: | edsdoj.2d6651a01848447ba242e2491e4f8c07 |
قاعدة البيانات: | Directory of Open Access Journals |
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