Effects of simulation and detection of low-momentum final state particles on the research of Baryon spectroscopy

The BES experiment at Beijing electron-position collider provides an excellent laboratory for the research of Baryon spectroscopy. Some difficulties arise due to the oftenappeared low-momentum of final state particles in such research. Using Xi* spectrum study from the decay J/psi-->Xi(+) LambdaK(-) as an example, we analyzed and compared the effects on the results with different versions of MC simulation, as well as the experimental data of low momentum particles, and derived the detection limit for this channel.