A new measurement of the $\Xi_{c}^{0}$ lifetime

TL;DR

This paper reports a new measurement of the lifetime of the charmed baryon f0 using data from Fermilab's FOCUS experiment, analyzing specific decay channels to determine its lifetime with improved precision.

Contribution

It provides a novel, precise measurement of the f0 lifetime using decay channels not previously measured with this accuracy.

Findings

Measured f0 lifetime as approximately 118 fs.

Used combined decay channels to improve measurement accuracy.

Achieved a lifetime measurement with statistical and systematic uncertainties.

Abstract

Using data collected by the Fermilab experiment FOCUS, we measure the lifetime of the charmed baryon (\Xi_{c}^{o}) using the decay channels (\Xi_{c}^{o}\to \Xi ^{-}\pi ^{+}) and (\Xi_{c}^{o}\to \Omega ^{-}K^{+}). From a combined sample of (110\pm 17) events we find (\tau (\Xi_{c}^{o}) =~118^{+ 14}_{- 12} \pm5) fs, where the first and second errors are statistical and systematic, respectively.