On the possibility of discrimination between ${\pi }^0,\eta ,\omega ,K_s^0$ mesons and a photon based on the calorimeter information in the CMS detector

Abstract

The possibility of separating the ${\pi }^0,\eta ,\omega$ and $K_s^0$ meson background from the signal photons produced directly in $pp$ collisions is analyzed. The rejection factors for two pseudorapidity regions 0.4<η<1.0$and1.6<\eta <2.0$ and six Et values, 20, 40, 60, 80, 100 and 200 GeV, are calculated for a case when only the calorimeter information is used. The cases of $\eta ,\omega$ and $K_s^0$ mesons decaying through the neutral and charged channels are considered separately.

17 pages, uses cernrep.cls style file