I have a particle that has a mass around $(760\pm10)~MeV/c^2$ but I do not know what kind of particle it is. This links me to some tables that have data on all sorts of subatomic particles but it is a bit daunting to go through and figure out what kind of a particle it could be. Does anyone know off the top of their head what kind of a particle this could be or what class of particle (baryon, meson, specific family of meson, etc.) it could be, or if there is a more effective way than sorting through LBL tables to figure out what kind of particle it is?
For this sort of task, it's easier to check through Wikipedia's list of baryons and list of mesons. Each article has a table listing the properties, including mass, of the known particles of the appropriate type, so you can just scan down the table and find the particle that matches your mass.
In addition to mesons and baryons, in general, you would need to check the three charged leptons (electron, muon, tau), the six quarks, the W and Z bosons, and the Higgs boson. Plus neutrinos, although we don't really know their masses. Those are all the massive particles that are not QCD bound states.