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

each vibration is
a different PARTICLE.
The Big Bang Theory Season 11, Episode 13

inventing a new
dark matter PARTICLE
The Big Bang Theory Season 11, Episode 13

Senior theoretical PARTICLE physicist
at CaITech, focusing on M Theory.
The Big Bang Theory Season 3, Episode 14

of the Higgs boson PARTICLE,
and you said,
The Big Bang Theory Season 5, Episode 21