Measurement of $$B$$ hadron lifetimes using $$J/\psi$$ final states at CDF
The average bottom-hadron and individual B+, B0, and Bs0 meson lifetimes have been determined using decays with a J/ψ→μ+μ– in the final state. The data sample consists of 110 pb–1 of $$\bar{p}p$$ collisions at s=1.8 TeV collected by the CDF detector at the Fermilab Tevatron collider during 1992–1995. For the average lifetime of B hadrons decaying into J/ψ+X, we obtain $$\langle$$τb$$\rangle$$=1.533±0.015(stat)–0.031+0.035(syst)ps. For the B+ and B0 meson lifetimes, we determine τ(B+)=1.68±0.07(stat)±0.02(syst)ps, τ(B0)=1.58±0.09(stat)±0.02(syst)ps, and τ(B+)/τ(B0)=1.06±0.07(stat)±0.02(syst). For the Bs0 meson lifetime, we find τ(Bs0)=1.34–0.19+0.23(stat)±0.05(syst) ps.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- CDF
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1893425
- Report Number(s):
- FERMILAB-PUB-97-352-E; ANL-HEP-PR-98-105; oai:inspirehep.net:450282
- Journal Information:
- Phys.Rev.D, Vol. 57
- Country of Publication:
- United States
- Language:
- English
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