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.
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Titolo: | Measurement of the B[over ¯]_{s}^{0} Effective Lifetime in the J/ψf_{0}(980) Final State | |
Autori: | ||
Data di pubblicazione: | 2012 | |
Rivista: | ||
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. | |
Handle: | http://hdl.handle.net/11567/534926 | |
Appare nelle tipologie: | 01.01 - Articolo su rivista |
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