A Search for the Fourth SM Family Quarks through Anomalous Decays

Understand

The existence of fourth family follows from the basics of the Standard Model.

• Because of the high masses of the fourth family quarks, their anomalous decays could be dominant, if certain criteria are met.
• This will drastically change the search strategy at hadron colliders.
• We show that the fourth SM family down quarks with masses up to 400-450 GeV can be observed (or excluded) via anomalous decays by Tevatron before the LHC.