A measurement of ∆Γs

The LHCb collaboration

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Resum

Using a dataset corresponding to 9 fb−1 of integrated luminosity collected with the LHCb detector between 2011 and 2018 in proton-proton collisions, the decay-time distributions of the decay modes Bs 0→J/ψη and Bs 0→J/ψπ+π are studied. The decay-width difference between the light and heavy mass eigenstates of the Bs 0 meson is measured to be ∆Γs = 0.087 ± 0.012 ± 0.009 ps−1, where the first uncertainty is statistical and the second systematic.

Idioma originalAnglès
Número d’article253
RevistaJournal of High Energy Physics
Volum2024
Número5
DOIs
Estat de la publicacióPublicada - de maig 2024

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