Disentangling left and right-handed neutrino effects in $$B\rightarrow K^{(*)}\nu \nu $$ B → K ( ∗ ) ν ν

Abstract The first observation of $$\mathcal {B}\left( B^+\rightarrow K^+\nu \nu \right) $$ B B + → K + ν ν by the Belle II experiment lies almost $$3\sigma $$ 3 σ away from the Standard Model expectation. In this letter we study this result in the SMEFT, extended by a light right-handed neutrino. W...

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Bibliographic Details
Main Authors: S. Rosauro-Alcaraz, L. P. S. Leal
Format: Article
Language:English
Published: SpringerOpen 2024-08-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-024-13104-x