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Measurement of the $\bar{B}_s^0\to D_s^-D_s^+$ and $\bar{B}_s^0\to D^-D_s^+$ effective lifetimes

LHCb Collaboration, R Bernet, K Müller, O Steinkamp, U Straumann, A Vollhardt, Et Al
2014

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The first measurement of the effective lifetime of theB 0 s meson in the decayB 0 s → D − s D + s is reported using a proton-proton collision dataset, corresponding to an integrated luminosity of 3 fb −1 , collected by the LHCb experiment. The measured value of theB 0 s → D − s D + s effective lifetime is 1.379 ± 0.026 ± 0.017 ps, where the uncertainties are statistical and systematic, respectively. This lifetime translates into a measurement of the decay width of the lightB 0 s mass eigenstate
more » ... of Γ L =0.725±0.014 ± 0.009 ps −1 . TheB 0 s lifetime is also measured using the flavor-specificB 0 s → D − D + s decay to be 1.52 ± 0.15 ± 0.01ps.
doi:10.5167/uzh-108326 fatcat:cknjisbxvfhujnjx22oxesvtbq
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LHCb Collaboration, R Bernet, K Müller, O Steinkamp, U Straumann, A Vollhardt, Et Al. "Measurement of the $\bar{B}_s^0\to D_s^-D_s^+$ and $\bar{B}_s^0\to D^-D_s^+$ effective lifetimes." (2014)