Tell me more ×  We know that in order to describe spin 2
massless particles quantum mechanically we need to go beyond the
field theory and consider the consistent quantum gravity theory
(i.e. superstrings), but to be able to describe the massive spin
2 mesons, I do not see the need to go beyond the field theory.
Is this because they are composite? Does it mean that we can not
describe elementary spin-2 massive fields in field theory? Well,
I know that it has been showed that gravitons can not be
composite. Is this the reason?  share|improve this question add
comment  1 Answer  up vote 3 down vote accepted  In QFT any
massive particle with a spin $\ge$ 1 will be non-renormalisable.
Even a W boson would be non-renormalisable except of course that
it acquires mass through the Higgs mechanism and is massless
above the weak transition energy.  And this is the point. A
massive particle of spin $\ge$ 1 (or a massless particle of spin
> 1) will be non-renormalisable unless some other physics
intervenes before the int