Hello Folks! Though I have written my own paper (http://arxiv.org/abs/math.DG/0605709), I am still a novice in Standard Model. Therefore, I have some questions for experts. The modules squares of the fermion wave functions are interpreted as the probability densities for the particles to be at some specific place. Is the same true for - massive vector bosons? - massless vector bosons (e.g. photons)? - Higgs boson? If the answer is negative in some of the above cases, what is the uncertainty principle for such particles?