The lower mass limit on the lightest supersymmetric particle, using ALEPH data up to 188.6 GeV

The lightest srpersymmetric particle (LSP) is expected to be stable, massive and neutral. Direct searches for supersymmetric particles in the context of the minimal supersymmetric extension to the standard model have been performed with the ALEPH detector. Using about 175pb-1 of data with centre-of-mass energies near 189GeV a limit on the mass of the LSP of M_LSP>32.3GeV/c2 at 95% confidence can be derived, assuming R-parity is conserved.The lightest srpersymmetric particle (LSP) is expected to be stable, massive and neutral. Direct searches for supersymmetric particles in the context of the minimal supersymmetric extension to the standard model have been performed with the ALEPH detector. Using about 175pb-1 of data with centre-of-mass energies near 189GeV a limit on the mass of the LSP of M_LSP>32.3GeV/c2 at 95% confidence can be derived, assuming R-parity is conserved

VELO Pattern Recognition

The status of the VELO pattern recognition software for the DC' 06 data production is given. The efficiency for finding tracks with at least 5 GeV/c momentum is 97.4%, with a ghost rate of 6.8%

VELO Module Production: Vacuum Tank Tests

This document describes the procedure for the burn-in of the completed module in the vacuum tank