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キーワード:
B Physics, CP Violation, Flavour Physics, Hadron-Hadron Scattering
MPINP:
LHCb - Abteilung Hinton
要旨:
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 Bs0 → J/ψη′ and Bs0 → J/ψπ+π− are studied. The decay-width difference between the light and heavy mass eigenstates of the Bs0 meson is measured to be ∆Γs = 0.087 ± 0.012 ± 0.009 ps−1, where the first uncertainty is statistical and the second systematic.