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.

Measurement of the B-0 lifetime with partially reconstructed B-0 -> D(-)l(+)nu(l) decays

FERRONI F;
2002-01-01

Abstract

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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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12571/2914
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