Gravity from Poincare Gauge Theory of the Fundamental Particles. VII: -- The Axial-Vector Model --
K. Hayashi, T. Shirafuji · Progress of Theoretical Physics · 1981
In Poincaré gauge theory of gravity we propose the axial-vector model in which an axial-vector particle with mass ma, besides graviton, is introduced as a gauge field and is minimally coupled to the totally antisymmetric spin angular-momentum tensor of the spin-1/2 fundamental particles. Its mass is predicted to be ma ≳ 1000 GeV from neutral current experiments available.