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A precise measurement of the B + , B 0 and mean b-hadron lifetime with the DELPHI detector at LEP I
2004
European Physical Journal C: Particles and Fields
Final results from the DELPHI Collaboration on the lifetime of B+ and B0 mesons and the mean b-hadron lifetime, are presented using the data collected at the Z0 peak in 1994 and 1995. Elaborate, inclusive, secondary vertexing methods have been employed to ensure a b-hadron reconstruction with good efficiency. To separate samples of B+ and B0 mesons, high performance neural network techniques are used that achieve very high purity signals. The results obtained are: tau_B+ = 1.624 +/- 0.014
doi:10.1140/epjc/s2004-01599-5
fatcat:d7nw4lahkrfqzczjw7uqlpyf6e