A class of six-parameter ghost-free gravity Lagrangians are found, which propagate massive tordions with $J^P\le 2^{\pm }$. One particular three-parameter ghost-free gravity Lagrangian is found which propagates a massless tordion with $J^P=1^{-}$.

• Received 17 October 1980

DOI:https://doi.org/10.1103/PhysRevD.24.1677