A High Statistics Measurement of the Lambdac+ Lifetime
J. M. Link, et al
TL;DR
This paper reports a precise measurement of the Lambdac+ baryon lifetime using high-statistics data from Fermilab, significantly improving the accuracy over previous measurements.
Contribution
It introduces an advanced analysis technique with detailed systematic uncertainty assessment for measuring the Lambdac+ lifetime.
Findings
Lambdac+ lifetime measured as 204.6 fs with improved precision.
Analysis reduces systematic uncertainties compared to prior studies.
Results significantly refine the world average lifetime value.
Abstract
A high statistics measurement of the Lambdac+ lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented. We describe the analysis technique with particular attention to the determination of the systematic uncertainty. The measured value of 204.6 +/- 3.4 (stat.) +/- 2.5 (syst.) fs from 8034 +/- 122 Lambdac -> pKpi decays represents a significant improvement over the present world average.
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