Beam energy,                    Ecms=    80.7 GeV

Reconstructed jet1-jet2 mass,   Mj1,j2=   74  GeV/c^2 (compare W mass,
                                                       Mw= 80 GeV/c^2)

Reconstructed jet3-jet4 mass,   Mj3,j4=   45  GeV/c^2 (much of the
                                                       discrepancy probably
                                                       due to jet4 particles
                                                       lost down the
                                                       beampipe)
Total visible energy,           Evis=    124  GeV
Total visible mass,             Mvis=    125  GeV/c^2
Missing transverse momentum,    Pt,miss= 2.2  GeV/c
Missing longitudinal momentum,  Pl,miss= 17.5 GeV/c   (down beam pipe)