The correct answer to the question "¿Dónde está el bosón de Higgs?" is not "En el acelerador de particulas." It is, in fact, "En todas partes". Because while the existence of the particle was proven using said particle accelerator, it's a sub-atomic particle found in all things.
I suspect the question Sheldon actually meant to ask was "¿Dónde se encuentra el bosón de Higgs?" Although my Spanish is not terribly good, so I might have that wrong.
Yes, it has been bugging me since last week.