A Storm in a "T" Cup
  We revisit the process of transversification and agglomeration of particle momenta that are often performed in analyses at hadron colliders, and show that many of the existing mass-measurement variables proposed for hadron colliders are far more closely related to each other than is widely appreciated, and indeed can all be viewed as a common mass bound specialized for a variety of purposes. 
Alan J. Barr, Teng Jian Khoo, Partha Konar, Kyoungchul Kong,   Christopher G. Lester, Konstantin T. Matchev, Myeonghun Park
hep-ph hep-ex