I'm pretty new to particle physics. Actaully, I'm brand new to particle physics (2nd year undergraduate). I've been invited into a course on the Higgs recently and have a few questions I was wondering about. I was wondering what would happen if Higgs did not couple to fermions? Does this mean we cannot see the higgs decay from photons, electrons, muons, qurks and gluons? How would we find the Higgs if Higgs did not coupe to fermions? And I was wondering why gluon fusion is the dominant Higgs production mechanism in both the LHC and Tevatron? And what are "channels for Higgs discovery at Tevatron"? I'm more curious as to what 'channels' is refering to. And what are "backgroup processes"? much thanks.