A Measurement of the Ds+ Lifetime

Abstract

A high statistics measurement of the Ds+ lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented. We describe the analysis of the two decay modes, Ds+ -> phi(1020)pi+ and Ds+ -> \bar{K}*(892)0K+, used for the measurement. The measured lifetime is 507.4 +/- 5.5 (stat.) +/- 5.1 (syst.) fs using 8961 +/- 105 Ds+ -> phi(1020)pi+ and 4680 +/- 90 Ds+ -> \bar{K}*(892)0K+ decays. This is a significant improvement over the present world average.

5 pages, 3 figures, 2 tables, submitted to PRL

References in corpus (7)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Cerenkov Particle Identification in FOCUS
• The Target Silicon Detector for the FOCUS Spectrometer
• A High Statistics Measurement of the Lambdac+ Lifetime
• Measurement of the Ds lifetime
• On the $D^0$ -- $D_s$ lifetime difference and $\tau \to 7\pi +{\nu }_{\tau }$ decays
• Charm Lifetimes and Mixing

Cited by in corpus (4)

• Measurement of $B_s^0$ and $D_s^{-}$ meson lifetimes
• Hadronic D and D_s Meson Decays
• Precise measurement of the $D_s^{+}$ lifetime at Belle II
• The Physics of Charm: Recent Experimental Results