Faculty and Student Publications
Document Type
Article
Publication Date
7-1-2022
Abstract
We calculate the complete differential decay distributions for the B meson decays, B¯→D(∗)ℓX¯, to a massive right-handed (RH) neutrino in the low-energy effective field theory (LEFT) framework. We find that a massive RH neutrino does not introduce any new angular structures compared to the massless case, but can cause significant distortions in angular observables. We study the phenomenology of low-energy four-fermion operators permitted by the standard model effective field theory (SMEFT) extended with RH neutrinos (SMNEFT). We show that to explain the positive value of the difference in forward-backward asymmetries, ΔAFBAFBμ-AFBe, tentatively inferred from Belle data, the RH neutrino must be massive. We also make predictions for q2 dependent angular observables to motivate future measurements.
Relational Format
journal article
Recommended Citation
Datta, A., Liu, H., & Marfatia, D. (2022). B ¯ → D (*) ℓ X ¯ decays in effective field theory with massive right-handed neutrinos. Physical Review D, 106(1), L011702. https://doi.org/10.1103/PhysRevD.106.L011702
DOI
10.1103/PhysRevD.106.L011702
Accessibility Status
Searchable text