The effective lifetime of the B̅ s0 meson in the decay mode B̅ s0→J/ψf0(980) is measured using 1.0 fb-1 of data collected in pp collisions at √s=7 TeV with the LHCb detector. The result is 1.700±0.040±0.026 ps, where the first uncertainty is statistical and the second systematic. As the final state is CP-odd, and CP violation in this mode is measured to be small, the lifetime measurement can be translated into a measurement of the decay width of the heavy B̅ s0 mass eigenstate, ΓH=0.588±0.014±0.009 ps-1.
Measurement of the B̅ s0 Effective Lifetime in the J/ψf_0(980) Final State
AURIEMMA, Giulio;SATRIANO, Celestina;
2012-01-01
Abstract
The effective lifetime of the B̅ s0 meson in the decay mode B̅ s0→J/ψf0(980) is measured using 1.0 fb-1 of data collected in pp collisions at √s=7 TeV with the LHCb detector. The result is 1.700±0.040±0.026 ps, where the first uncertainty is statistical and the second systematic. As the final state is CP-odd, and CP violation in this mode is measured to be small, the lifetime measurement can be translated into a measurement of the decay width of the heavy B̅ s0 mass eigenstate, ΓH=0.588±0.014±0.009 ps-1.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.