Test of Lepton Universality and Measurement of the Form Factors of D0 →k∗ (892)-μ+νμ
Küçük Resim Yok
Tarih
2025
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
American Physical Society
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
One of the main goals of studying semileptonic decays in flavor physics is to gain a better understanding of hadronic transitions in the nonperturbative region of Quantum Chromodynamics. This involves measuring Cabibbo-Kobayashi-Maskawa matrix elements, understanding form factors, and comparing them with theoretical predictions. We report a first study of the semileptonic decay D0→K-π0μ+νμ by analyzing an e+e- annihilation data sample of 7.93 fb-1 collected at the center-of-mass energy of 3.773 GeV with the BESIII detector. The absolute branching fraction of D0→K-π0μ+νμ is measured for the first time, providing necessary input for extracting the c→s Cabibbo-Kobayashi-Maskawa matrix element through this process. This measurement allows us to test lepton flavor universality, with no indication of violation found. Furthermore, a series of hadronic form factors have been determined and compared with theoretical predictions, which will impose stricter constraints on theoretical models. © 2025 authors. Published by the American Physical Society.
Açıklama
Anahtar Kelimeler
Cabibbo-Kobayashi-Maskawa Matrix, E+e- Annihilation, Flavor Physics, Form factors, Hadronics, Semileptonic Decay
Kaynak
Physical Review Letters
WoS Q Değeri
Scopus Q Değeri
Q1
Cilt
134
Sayı
1
Künye
Ablikim, M., Achasov, M. N., Adlarson, P., Afedulidis, O., Ai, X. C., Aliberti, R., ... & Huang, K. X. (2025). Test of Lepton Universality and Measurement of the Form Factors of D 0→ K*(892)-μ+ ν μ. Physical Review Letters, 134(1), 011803.
