
All right, so
this PARTICLE here
The Big Bang Theory Season 5, Episode 21

...of a subatomic PARTICLE
called the Higgs boson.
The Big Bang Theory Season 6, Episode 3

"Higgs boson PARTICLE."
How could you not get that?
The Big Bang Theory Season 3, Episode 13

Professor Rothman urinated in
the PARTICLE physics wab again,
The Big Bang Theory Season 5, Episode 14

But Penny has no interest
in subatomic PARTICLE research.
The Big Bang Theory Season 3, Episode 15