Have you, yourself, ever discovered a new type of particle or quark as you spoke about in your work?

Question: Have you, yourself, ever discovered a new type of particle or quark as you spoke about in your work?
- Keywords:
  discovery,
  particle,
  quark
Asked by rhiannaberry to David on 17 Jun 2013.
- David Freeborn answered on 17 Jun 2013:
  
  These days, nobody can really claim to be the discoverer of a particle- it’s only done by huge teams (possibly hundreds of people). Finding a particle involves looking through the tens of billions of reactions.
  I was part of the very big group that discovered the Higgs Boson, but I can’t personally claim much credit for it!

Question: Have you, yourself, ever discovered a new type of particle or quark as you spoke about in your work?