Abstract
We report the first measurement of absolute hadronic branching fractions of baryon at the production threshold, in the 30 years since the discovery. In total, 12 Cabibbo-favored hadronic decay modes are analyzed with a double-tag technique, based on a sample of of collisions at recorded with the BESIII detector. A global least-squares fitter is utilized to improve the measured precision. Among the measurements for twelve decay modes, the branching fraction for is determined to be , where the first uncertainty is statistical and the second is systematic. In addition, the measurements of the branching fractions of the other 11 Cabibbo-favored hadronic decay modes are significantly improved.
- Received 26 November 2015
DOI:https://doi.org/10.1103/PhysRevLett.116.052001
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