# A Measurement of the neutral $B$ meson lifetime using partially reconstructed $B^0 \rightarrow D^{*-}\pi^+$ decays

Abstract : The neutral B meson lifetime has been measured with the data collected by the BABAR detector at the PEP-II storage ring during the year 2000 for a total integrated luminosity of 20.3 fb-1. The B0 --> D*- pi+ decays have been selected with a partial reconstruction method in which only the fast pion from the B0 decay and the slow pion from D*- --> D0 bar pi- are reconstructed. The B0 lifetime has been measured to be 1.510 +/- 0.040 +/- 0.038 ps with a sample of 6971 +/- 241 reconstructed signal events.
Document type :
Conference papers

http://hal.in2p3.fr/in2p3-00011490
Contributor : Claudine Bombar <>
Submitted on : Friday, May 3, 2002 - 3:27:20 PM
Last modification on : Wednesday, January 6, 2021 - 6:22:02 PM

### Citation

B. Aubert, D. Boutigny, J.M. Gaillard, A. Hicheur, Y. Karyotakis, et al.. A Measurement of the neutral $B$ meson lifetime using partially reconstructed $B^0 \rightarrow D^{*-}\pi^+$ decays. Rencontres de Moriond on QCD and Hadronic Interactions 37, Mar 2002, Les Arcs, France. pp.1-15. ⟨in2p3-00011490⟩

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