2004/09/30 by D0 Collaboration, V. M. Abazov, B. Abbott +98 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevlett.94.042001
published as Phys.Rev.Lett.94:042001,2005 · 7 pages, 4 Figures, Submitted to Physical Review Letters. Minor changes after PRL referees coments
arxiv created 2004/12/10 · openalex publication_date 2005/02/02 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
Using the exclusive decay Bs0\ensuremath→J/\ensuremathψ(\ensuremathμ+\ensuremathμ^\ensuremath-)\ensuremathφ(K+K^\ensuremath-), we report the most precise single measurement of the Bs0 lifetime. The data sample corresponds to an integrated luminosity of approximately 220 pb^\ensuremath-1 collected with the D0 detector at the Fermilab Tevatron Collider in 2002--2004. We reconstruct 337 signal candidates, from which we extract the Bs0 lifetime, \ensuremathτ(Bs0)=1.444_\ensuremath-0.090+0.098(stat)\ifmmode±\else\textpm\fi0.020(sys) ps. We also report a measurement for the lifetime of the B0 meson using the exclusive decay B0\ensuremath→J/\ensuremathψ(\ensuremathμ+\ensuremathμ^\ensuremath-)K*0(892)(K+\ensuremathπ^\ensuremath-). We reconstruct 1370 signal candidates, obtaining \ensuremathτ(B0)=1.473_\ensuremath-0.050+0.052(stat)\ifmmode±\else\textpm\fi0.023(sys) ps, and the ratio of lifetimes, \ensuremathτ(Bs0)/\ensuremathτ(B0)=0.980_\ensuremath-0.071+0.076(stat)\ifmmode±\else\textpm\fi0.003(sys).