Measurement of the lifetime
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文摘
Using a data set corresponding to an integrated luminosity of 3 fb−1den">de">3 fb1, collected by the LHCb experiment in pp   collisions at centre-of-mass energies of 7 and 8 TeV, the effective lifetime in the View the MathML sourceden">de">Bs0J/ψη decay mode, τeffden">de">τeff, is measured to be
dea72ac1e161f0d70fbb4a" title="Click to view the MathML source">τeff=1.479±0.034 (stat)±0.011 (syst) ps.den">de">τeff=1.479±0.034 (stat)±0.011 (syst) ps.
Assuming CP   conservation, τeffden">de">τeff corresponds to the lifetime of the light View the MathML sourceden">de">Bs0 mass eigenstate. This is the first measurement of the effective lifetime in this decay mode.

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