Why doesn't the Higgs Boson give mass to Photons?

Photons are energy not matter, thus the Higgs Mechanism does not apply

I've got the information but don't understand anything out of it.Hope it may help you..:) :P(Source-Wiki)

Part that remains massless-

The gauge group of the electroweak part of the standard model is SU(2) × U(1). The group SU(2) is all 2-by-2 unitary matrices, all the orthonormal changes of coordinates in a complex two dimensional vector space.

Rotating the coordinates so that the second basis vector points in the direction of the Higgs boson makes the vacuum expectation value of H the spinor (0,v). The generators for rotations about the x, y, and z axes are by half the Pauli matrices , so that a rotation of angle θ about the z-axis takes the vacuum to:

While the Tx and Ty generators mix up the top and bottom components of the spinor, the Tz rotations only multiply each by opposite phases. This phase can be undone by a U(1) rotation of angle ½θ. Consequently, under both an SU(2) Tz-rotation and a U(1) rotation by an amount ½θ, the vacuum is invariant.

This combination of generators:

defines the unbroken part of the gauge group, where Tz is the generator of rotations around the z-axis in the SU(2) and Y is the hypercharge generator of the U(1). This combination of generators (a z rotation in the SU(2) and a simultaneous U(1) rotation by half the angle) preserves the vacuum, and defines the unbroken gauge group in the standard model, namely the electric charge group. The part of the gauge field in this direction stays massless, and amounts to the physical photon.

Thats the thing that separates light and matter, photons do not have a Higgs Boson.

the authentic mechanism for a manner and why debris benefit mass by using interacting with Higgs Bosons isn't yet popular so the authentic reason of the photon being massless is likewise unknown proper now.

i apologize i dont know, but i can give you a fairly nice video, with which you can understand how, i think it is because it does not bend the space time fabric...

http://www.youtube.com/watch?v=X23NAqVORIU

Sorry i couldnt answer your answer precisely :(