What happens if the Higgs boson particle doesn exist?
First, the Higgs Boson, is not a part of the so-called Standard Model of Elementary Particles. The Standard Model consists of three families of known and observed mass (electrons, neutrinos, etc.) and force messenger particles (photons, gluons, etc.). [See source.] Both the Higgs and the graviton are theoretical elementary boson particles that can be added to the Standard Model if they are subsequently observed through LHC experiments. Their discovery would go a long way in indicating string/M theory is not wrong. But the inability to find them does not mean the theory is wrong, it simply means there is no evidence the theory is not wrong. Which means string/M theory remains as an unsubstantiated hypothesis rather than a true theory. None of this will change the laws of physics as the Standard Model doesn’t include them in the first place. But it would be discouraging to those physicists who make their livings off string/M theory. And it would likely mean more emphasis (and funding) in
