lambda-b baryon

lamb·da-b baryon

 (lăm′də-bē′)
n.
An electrically neutral baryon containing a bottom quark and having a mass about 11,000 times that of the electron and a mean lifetime of about 1.2 × 10-12 second. Also called bottom lambda baryon.
References in periodicals archive ?
When the lambda-b baryon decays, particles produced by the decay speed away at different angles and momenta for matter and antimatter versions of the baryon, the scientists report online September 16 at arXiv.
Specifically, the scientists detected differences in spatial orientation of decay products of a class of matter and antimatter particles called Lambda-b baryons.