Title :
Results on heavy quark selection through an impact parameter trigger
Author :
Adamovitch, M. ; Alexandrov, Y. ; Gerasimov, S. ; Kharlamov, S. ; Malinina, L. ; Zavertiaev, M. ; Antinori, F. ; Dameri, M. ; Hurst, R. ; Osculati, B. ; Rossi, L. ; Tomasini, G. ; Bailly, J.L. ; Buys, A. ; Grard, F. ; Legros, P. ; Forino, A. ; Gessaroli,
Author_Institution :
Lebedev Inst. of Phys., Moscow, USSR
fDate :
4/1/1990 12:00:00 AM
Abstract :
The implementation of a trigger aimed at selecting those nuclear interactions which contain a charm particle is described. The trigger uses a fast emulator of the PDP-11 which calculates the impact parameter of the decaying charged tracks originating from the charm decay. An enrichment factor of 15 is thereby obtained. The results obtained show that, in its present implementation, this trigger, while giving a good enrichment factor, performs a correct rejection, since it does not eliminate many good events that would have been retained by the more sophisticated selection of the offline programs
Keywords :
nuclear electronics; physics computing; quarks; trigger circuits; PDP-11; charm decay; charm particle; decaying charged tracks; enrichment factor; fast emulator; heavy quark selection; impact parameter trigger; nuclear interactions; offline programs; rejection; Contamination; Detectors; Magnetic field measurement; Particle beams; Physics; Pollution measurement; Production; Spectroscopy; Target tracking; Telescopes;
Journal_Title :
Nuclear Science, IEEE Transactions on
