Particle Production Measurements using the MIPP Detector at Fermilab

The Main Injector Particle Production (MIPP) experiment at Fermilab is a fixed target hadron production experiment which uses 120 GeV/c primary protons from the Main Injector to produce secondary beams of $\pi^{\pm}, \rm{K}^{\pm}$, p and $\bar{\rm{p}}$ from 5 to 90 GeV/c as projectiles on nuclear targets. It is designed to measure particle production in interactions of projectile p/$\bar{\rm{p}}/\pi^{\pm}/\rm{K}^{\pm}$ on nuclear targets which include H, Be, C, Bi and U, and a dedicated run with the NuMI target. We present the inelastic cross sections for 58 and 85 GeV/c p-H interactions, and 58 and 120 GeV/c p-C interactions. A new method is described to account for the low multiplicity inefficiencies in the interaction trigger using KNO scaling. Inelastic cross sections as a function of multiplicity are also presented. The MIPP data are compared with the Monte Carlo predictions and previous measurements. We also describe an algorithm to identify charged particles ($\pi^{\pm}/\rm{p}/\bar{\rm{p}}$ etc.), and present preliminary e$^{\pm}, \pi^{\pm}, \rm{K}^{\pm}$, p and $\bar{\rm{p}}$ particle production cross sections in bins of p$_{\rm{T}}^{2}$ and x$_{\rm{F}}$.