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# Measurement of the $B^0$ Lifetime with Partial Reconstruction of $\bar B^0 \rightarrow D^{*+}\rho^-$

Abstract : A sample of about 5500 $\bar B^0 \to D^{*+} \rho^-$ and 700 $\bar B^0 \to D^{*+} a_1^-$ events is identified, using the technique of partial reconstruction, among 22.7 $B\bar B$ pairs collected by the BaBar experiment at the PEP-II storage ring. With these events, the $B^0$ lifetime is measured to be $1.616 \pm 0.064 \pm 0.075$ ps. This measurement serves as validation for the procedures required to measure $\sin(2\beta + \gamma)$ with partial reconstruction of $\bar B^0 \to D^{*+} \rho^-$.
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Conference papers
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http://hal.in2p3.fr/in2p3-00011491
Contributor : Claudine Bombar <>
Submitted on : Friday, May 3, 2002 - 3:51:48 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.. Measurement of the $B^0$ Lifetime with Partial Reconstruction of $\bar B^0 \rightarrow D^{*+}\rho^-$. Rencontres de Moriond on QCD and Hadronic Interactions 37, Mar 2002, Les Arcs, France. pp.1-18. ⟨in2p3-00011491⟩

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