- Aubert, B;
- Barate, R;
- Boutigny, D;
- Gaillard, JM;
- Hicheur, A;
- Karyotakis, Y;
- Lees, JP;
- Robbe, P;
- Tisserand, V;
- Zghiche, A;
- Palano, A;
- Pompili, A;
- Chen, JC;
- Qi, ND;
- Kong, G;
- Wang, P;
- Zhu, YS;
- Eigen, G;
- Ofte, I;
- Stugu, B;
- Abrams, GS;
- Borgland, AW;
- Breon, AB;
- Brown, DN;
- Button-Shafer, J;
- Cahn, RN;
- Charles, E;
- Gill, MS;
- Gritsan, AV;
- Groysman, Y;
- Jacobsen, RG;
- Kadel, RW;
- Kadyk, J;
- Kerth, LT;
- Kolomensky, YG;
- Kral, JF;
- LeClerc, C;
- Levi, ME;
- Lynch, G;
- Mir, LM;
- Oddone, PJ;
- Orimoto, TJ;
- Pripstein, M;
- Roe, NA;
- Romosan, A;
- Ronan, MT;
- Shelkov, VG;
- Telnov, AV;
- Wenzel, WA;
- Harrison, TJ;
- Hawkes, CM;
- Knowles, DJ;
- O'Neale, SW;
- Penny, RC;
- Watson, AT;
- Watson, NK;
- Deppermann, T;
- Goetzen, K;
- Koch, H;
- Lewandowski, B;
- Pelizaeus, M;
- Peters, K;
- Schmuecker, H;
- Steinke, M;
- Barlow, NR;
- Bhimji, W;
- Boyd, JT;
- Chevalier, N;
- Clark, PJ;
- Cottingham, WN;
- Mackay, C;
- Wilson, FF;
- Hearty, C;
- Mattison, TS;
- McKenna, JA;
- Thiessen, D;
- Jolly, S;
- Kyberd, P;
- McKemey, AK;
- Blinov, VE;
- Bukin, AD;
- Buzykaev, AR;
- Golubev, VB;
- Ivanchenko, VN;
- Korol, AA;
- Kravchenko, EA;
- Onuchin, AP;
- Serednyakov, SI;
- Skovpen, YI;
- Yushkov, AN;
- Best, D;
- Chao, M;
- Kirkby, D;
- Lankford, AJ;
- Mandelkern, M;
- McMahon, S;
- Mommsen, RK;
- Stoker, DP;
- Buchanan, C;
- Hadavand, HK
- et al.
We measure the B0 lifetime τB0 and the B 0-B̄0 oscillation frequency Δmd with a sample of approximately 14000 exclusively reconstructed B 0→D*-ℓ+vℓ signal events, selected from 23 million BB̄ pairs recorded at the Y(45) resonance with the BABAR detector at the Stanford Linear Accelerator Center. The decay position of the other B is determined with the remaining tracks in the event, and its b-quark flavor at the time of decay is determined with a tagging algorithm that exploits the correlation between the flavor of the b quark and the charges of its decay products. The lifetime and oscillation frequencies are measured simultaneously with an unbinned maximum-likelihood fit that uses, for each event, the measured difference in decay times of the two B mesons (Δt), the calculated uncertainty on Δt, the signal and background probabilities, and b-quark tagging information for the other B. The results are τB0=(1.523-0.023+0.024±0.022) ps and Δmd=(0.492±0.018 ±0.013) ps-1. The statistical correlation coefficient between τB0 and Δm d is -0.22. © 2003 The American Physical Society.