Abstract
The cross sections for [ital pp][r arrow][ital W]([r arrow][ital l][nu])[gamma][gamma]+[ital n][minus]jet+[ital X] with [ital n]=1,2 are calculated as backgrounds to the associated Higgs production channel [ital pp][r arrow][ital t] [ital [bar t]HX][r arrow][ital l][nu][gamma][gamma][ital X][prime]. It is shown that these backgrounds are important for using a modest photon detector with a mass resolution [similar to]3% of the photon pair invariant mass. The signal to background ratio with these backgrounds is about unity. Therefore a better photon detector is really needed for detecting the Higgs boson in the [ital pp][r arrow][ital t[bar t]] [ital HX] channel.
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