Determination of the Higgs production vertex in pp→(H0→γγ)+X using charged tracks

We have studied the possibility of using charged tracks associated with pp→H0X(H0→γγ) to determine the Higgs vertex along the beam direction. Depending on the number of overlayed minimum bias events a large fraction of Higgs vertices can be correctly identified using a tracking detector with the properties of the L3P tracker. The z-vertex determination reduces the uncertainty of the photon angle due to the length of the luminous region. This leads to an enhancement of the significance of the Higgs signal in high resolution electromagnetic calorimeters, particularly at smaller radii. (orig.)