A New Measurement of the Cascade(c)+ Lifetime

TL;DR

This paper reports a precise measurement of the lifetime of the charm-strange baryon Cascade(c)+ using data from the Fermilab FOCUS experiment, analyzing multiple decay channels to improve accuracy.

Contribution

The study provides a new, more precise measurement of the Cascade(c)+ lifetime based on extensive decay channel analysis, enhancing previous experimental results.

Findings

Cascade(c)+ lifetime measured as 0.439±0.022±0.009 ps

Analysis of multiple decay channels improves measurement accuracy

Results contribute to understanding charm baryon properties

Abstract

A precise determination of the charm-strange baryon Cascade(c)+ lifetime is presented. The data were accumulated by the Fermilab high-energy photoproduction experiment FOCUS. The measurement is made with 300 Cascade(c)+ --> Cascade- pi+ pi+ decays, 130 Cascade(c)+ --> Sigma+ K- pi+ decays, 45 Cascade(c)+ --> p K- pi+ decays and 58 Cascade(c)+ --> Lambda K- pi+ pi+ decays. The Cascade(c)+ lifetime is measured to be 0.439+/-0.022+/-0.009 ps.