Gravitational form factors of the neutrino

Details Gravitational form factors of the neutrino Gravitational form factors of the neutrino

1993-05-03

arxiv.org/abs/gr-qc/9305002v1

Phys.Rev. D47 (1993) 5187-5190

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

TEX, need PHYZZX.TEX, 16 pages, NTU-TH-03

Scientific paper

10.1103/PhysRevD.47.5187

The gravitational properties of the neutrino is studied in the weak field approximation. By imposing the hermiticity condition, CPT and CP invariance on the \em tensor matrix element, we shown that the allowed gravitational form factors for Dirac and Majorana neutrinos are very different. In a CPT and CP invariant theory, the \em tensor for a Dirac neutrino of the same specie is characterized by four gravitational form factors. As a result of CPT invariance, the \em tensor for a Majorana neutrino of the same specie has five form factors. In a CP invariant theory, if the initial and final Majorana neutrinos have the same (opposite) CP parity, then only tensor (pseudo-tensor) type transition are allowed.

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