Skip to main content
eScholarship
Open Access Publications from the University of California

UC Berkeley

UC Berkeley Previously Published Works bannerUC Berkeley

Simultaneous measurement of the B0 meson lifetime and mixing frequency with B0→D*-+v ℓ decays

  • Author(s): 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.
Abstract

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.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
For improved accessibility of PDF content, download the file to your device.
Current View