Author/Authors :
Adamovich، نويسنده , , M and Adinolfi، نويسنده , , M and Alexandrov، نويسنده , , Y and Angelini، نويسنده , , C and Antinori، نويسنده , , F and Bacci، نويسنده , , C and Barber، نويسنده , , G and Barberis، نويسنده , , D and Barney، نويسنده , , D and Batten، نويسنده , , J and Beusch، نويسنده , , W and Bruschini، نويسنده , , C and Cardarelli، نويسنده , , R and Cardini، نويسنده , , A and Casanova، نويسنده , , V and Ceradini، نويسنده , , F and Ciape، نويسنده ,
Abstract :
We describe the detectors and trigger system used in the CERN WA92 experiment. The experiment was designed to study the production and decay of beauty particles from 350 GeV/c π− interactions in copper and tungsten targets. Charged particle tracking is performed using the omega spectrometer. Silicon microstrip detectors are used to provide precise tracking information in the region of the production and the decay of heavy-flavoured particles and to trigger on the resulting high impact parameter tracks. The precision of vertex reconstruction corresponds to ±3.7% of the mean B-decay proper lifetime. Lepton and high transverse momentum hadron signals are also used in the trigger, which accepts 23% of B-decays and rejects 98.4% of non-beauty interactions.
