The Higgs boson is not thought to be related to gravity, beyond giving mass to some particles. The Higgs particle is the "chunky" form of the Higgs field, just like a photon of light is a little chunk of electric field that has broken off and gone into business for itself.
If you have more questions about physics, ask /r/physics on Reddit. They people there are very nice and include several serious physicists.
If you have more questions about physics, ask /r/physics on Reddit. They people there are very nice and include several serious physicists.