Observation of the muonic decay of the charged intermediate vector boson W+-

SIGLEAvailable from the library of Aachen Technische Hochschule (DE) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Fast online track finding for the muon trigger in the UA1 experiment

A microprocessor system will be used to trigger on high energetic muons in the UA1 experiment. The system consists of MC 68000 microprocessors. Six of them work in parallel for a first online track finding and one as supervisor to take the final trigger decision. To reduce the input rate for the microprocessors, very fast prefiltering is done by a specially constructed hardware trigger. (0 refs)

Observation of the muonic decay of the charged intermediate vector boson

Muons of high transverse momentum pμ T have been observed in the large drift chambers surrounding the UA1 detector at the CERN 540 GeV pp̄ collider. For an integrated luminosity of 108 nb-1, 14 isolated muons have been found with pT > 15 GeV/c. They are correlated with a large imbalance in total transverse energy, and show a kinematic behaviour consistent with the muonic decay of the Intermediate Vector Boson W± of weak interactions. The partial cross section is in agreement with previous measurements for electronic decays and with muon-electron universality. The W mass is determined to be mW = 81+6 -7 GeV/c2. © 1984

Search for centauro like events at the cern proton-antiproton collider

A search for events having the characteristics of cosmic ray Centauros has been made in 540 GeV centre of mass proton-antiproton collisions, using information on charged particle multiplicities and transverse momenta from our central detector image chamber, together with energy deposition in our calorimeters. No such events were found in 48 000 low bias events. © 1983