First observation of a family of double-charm baryons
/ Authors
/ Abstract
Abstract The SELEX experiment (E781) at Fermilab has candidates for high mass states decaying to σc+K−η+ and σc+K−pi+η+, Cabibbo-allowed decay modes of doubly nmodes of doubly-charnmed baryons ϵcc+ and ϵcc++. The masses are consistent with theoretical considerations, but the spectroscopy is surprising. Limited lifetime information suggests that τϵcc++ ∼ τϵcc+.