New measurements of the D0 and D+ lifetimes
The FOCUS collaboration
TL;DR
This paper reports precise measurements of D0 and D+ meson lifetimes using a large dataset from the FOCUS experiment, providing updated values with reduced uncertainties.
Contribution
The study presents new lifetime measurements of D0 and D+ mesons with high statistical significance, improving the precision over previous results.
Findings
D0 lifetime: 409.6 ± 1.1 (stat) ± 1.5 (syst) fs
D+ lifetime: 1039.4 ± 4.3 (stat) ± 7.0 (syst) fs
Large dataset from FOCUS experiment enabled high-precision measurements.
Abstract
A high statistics sample of photoproduced charm particles from the FOCUS(E831) experiment at Fermilab has been used to measure the D0 and D+ lifetimes. Using about 210000 D0 and 110000 D+ events we obtained the following values: 409.6 +/- 1.1 (statistical) +/- 1.5 (systematic) fs for D0 and 1039.4 +/- 4.3 (statistical) +/- 7.0 (systematic) fs for D+.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research