A Method for Deriving Transverse Masses Using Lagrange Multipliers
  We use Lagrange multipliers to extend the traditional definition of Transverse Mass used in experimental high energy physics. We demonstrate the method by implementing it to derive a new Transverse Mass that can be used as a discriminator to distinguish between top decays via a charged W or a charged Higgs Boson. 
Eilam Gross and Ofer Vitells