joannaaleksandra wrote:
The funny thing is that I had a conversation with my mother yesterday and I stated that the Higgs boson would probably always be a theoretical particle.
Argh, don't say things like that. You'll make me go on a philosophy of science rant.
Long story short: the distinction between "theoretical object" and "really existing object" does not actually make sense. All that exists are predictions and confirmations of predictions. Another way to put it is that
every purported object is only theoretical. If you claim that your pet cat really exists, you are merely inferring that the cat exists because your
theory that your pet cat exists makes predictions which are confirmed by your experience. It's just the same with theoretical particles.
The Higgs boson is a particle that featured in the standard theory of particle physics. This theory's predictions had previously always come true, so the Higgs boson was already a perfectly reasonable and "real" part of the theory. Now what might have just happened is that the theory in which it plays a part has
not been falsified. It's still just as "real" as it ever was, which is to say that it is still just as "real" as any purported object in science ever is, which is to say that it is an object which features in a theory whose predictions have so far always come true.