Do you really exist or are you just teasing us?

In theory I exist, no direct evidence of my existence has been found, however I am predicted to exist with the current Standard Model. In order to work with the Standard Model, I have to be pretty massive, and it’s just a matter of being able to put an enormous amount of energy into a collision to find me. The LHC at CERN should have that energy, it’s just a matter of getting the machine operational again.