  Search for the neutron-rich hypernucleus 9LHe is reported by the FINUDA
experiment at DAFNE, INFN-LNF, studying (pi+, pi-) pairs in coincidence from
the K-stop + 9Be --> 9LHe + pi+ production reaction followed by 9LHe --> 9Li +
pi- weak decay. An upper limit of the production rate of 9LHe undergoing this
two-body pi- decay is determined to be (2.3 +/- 1.9) 10-6/K-stop at 90%
confidence level.
