I would read Feynman, P. R. 1994, Six Easy Pieces, 107-110. There is a discussion of the exact same particle for gravity. According to Feynman everyone has this idea at one time or another. But observations do not allow it. See his text for the reason why, pp 107-110.

How does your hypothetical particle cause gravitational redshift, time dilation, deflection of light from a distant star grazing the surface of the sun, gravitational lensing, ocean tides on the surface of the earth?

What is the difference between your particle and a graviton?



CC