Preprint
Sep 2026
Endpoint anatomy of the baryon--meson sum rule in $b\to s\nu\bar\nu$
Baryon-meson sum rules enable cross-checks among exclusive mesonic and baryonic measurements. Unlike their heavy-to-heavy counterparts, analogous heavy-to-light relations lack an explicit heavy-quark-symmetry origin. We investigate their origin in the $b\to s\nu\bar\nu$ system by studying the relevant helicity amplitud...
Syuhei Iguro
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