Measurement Of The B-0 Lifetime With Partially Reconstructed B-0 -> D(-)L(+)Nu(L) Decays
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Charles, S. Dasu, A. Eichenbaum,H. Hu, J. Johnson,R. Liu,F. Di Lodovico, Y. Pan,R. Prepost,I. Scott,S. Sekula,J. von Wimmersperg-Toeller, S. Wu,Z. Yu,T. Kordich,H. Neal
PHYSICAL REVIEW LETTERS（2002）
引用 20|浏览332
摘要
The B-0 lifetime was measured with a sample of 23 million B (B) over bar pairs collected by the BABAR detector at the PEP-II e(+)e(-) storage ring during 1999 and 2000. Events from the semileptonic decay B-0-->D(*-)l(+)nu(l) have been selected with a partial reconstruction method in which only the charged lepton and the slow pi from the D*--->(D) over bar (0)pi (-) decay are reconstructed. The result is tau(B)(0)=1.529+/-0.012(stat )+/-0.029(syst) ps.
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theb0lifetime,measurement
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