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...
Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
SpringerOpen
2024-08-01
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Series: | European Physical Journal C: Particles and Fields |
Online Access: | https://doi.org/10.1140/epjc/s10052-024-13104-x |