The Majorana spinor is again a pair of Weyl spinors, but this time arranged so that the left-handed spinor is the charge conjugate of the right-handed spinor. The result is a field with two less degrees of freedom than the Dirac spinor. It is unable to interact with the electromagnetic field, since it transforms as a scalar under the action of the s p i n C group. That is, it transforms as a spinor, but transversally, such that it is invariant under the U ( 1 ) action of the spin group.