Speaker
Description
An algorithm has been developed for reconstructing high-$p_T$ $\pi_0$s
at large pseudorapidities using the MPC and MPC-EX systems at PHENIX.
The Muon Piston Calorimeter Extension Upgrade (MPC-EX) to PHENIX is a
preshower detector located in front of the MPC, an electromagnetic
calorimeter, placed at large pseudorapidity (3.1<$ \eta $<3.8). The MPC-EX
consists of alternating tungsten plates and micropattern silicon
sensors. At momenta above $p\sim 20$ GeV/c, the opening angle of the
$\pi_0$ decay photons becomes too small to resolve with the MPC alone.
By using the MPC-EX preshower, the the decay photons of $\pi_0$s of up
to $p \sim 100$ GeV/c can be resolved. $\pi_0$s are recognized and
reconstructed by analyzing the shower shape in the MPC-EX.
| Preferred Track | Electromagnetic Probes |
|---|---|
| Collaboration | PHENIX |
