Method for identifying $\overrightarrow{H}\tau \overrightarrow{\tau }{e}^{\pm }{\mu }^{\mp }{p}_T$ at the CERN LHC

Weak boson fusion promises to be a copious source of intermediate mass Higgs bosons at the CERN LHC. The additional very energetic forward jets in these events provide for powerful background suppression tools. We analyze the subsequent $\overrightarrow{H}\tau \overrightarrow{\tau }{e}^{\pm }{\mu }^{\mp }{p}_T$ decay for Higgs boson masses in the 100–150 GeV range. A parton level analysis of the dominant backgrounds demonstrates that this channel allows the observation of $\overrightarrow{H}\tau \tau$ in a low-background environment, yielding a significant Higgs boson signal with an integrated luminosity of order 60 ${\mathrm{fb}}^{-1}$ or less, over most of the mass range. We also restate a no-lose theorem for observation of at least one of the $\mathrm{CP}$-even neutral Higgs bosons in the MSSM, which requires an integrated luminosity of only 40 ${\mathrm{fb}}^{-1}.$