The neutral B meson lifetime is measured with the data collected by the BABAR detector at the PEP-II storage ring during the years 1999 and 2000, with a total integrated luminosity of 20.7 fb-1. The decays B0→D*-π+ and B0→D*-ρ+ are selected with a partial-reconstruction technique, yielding samples of 6970±240 and 5520±250 signal events, respectively. With these events, the B0 lifetime is measured to be 1.533±0.034(stat)±0.038(syst)ps. This measurement serves as a test and validation of procedures required to measure the CP violation parameter sin(2β+γ) with partial reconstruction of these modes.
Measurement of the B0 meson lifetime with partial reconstruction of B0→D*-π+ and B0→D*-ρ+ decays
LO VETERE, MAURIZIO;MONGE, MARIA ROBERTA;PATRIGNANI, CLAUDIA;TOSI, SILVANO;
2003-01-01
Abstract
The neutral B meson lifetime is measured with the data collected by the BABAR detector at the PEP-II storage ring during the years 1999 and 2000, with a total integrated luminosity of 20.7 fb-1. The decays B0→D*-π+ and B0→D*-ρ+ are selected with a partial-reconstruction technique, yielding samples of 6970±240 and 5520±250 signal events, respectively. With these events, the B0 lifetime is measured to be 1.533±0.034(stat)±0.038(syst)ps. This measurement serves as a test and validation of procedures required to measure the CP violation parameter sin(2β+γ) with partial reconstruction of these modes.
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