Showing papers by "José Salt published in 1990"
TL;DR: Hadronic decays of Z 0 bosons are studied in the Delphi detector in this paper, where global event variables and singel particles inclusive distributions are compared with QCD-based predictions.
81 citations
TL;DR: In this paper, the authors measured the cross section ratios R l = σ l (e + e − →l + l − ) σ h ( e + e−→l+l−) for l=e, μ and τ using data taken from a scan around the Z0.12.
28 citations
10 May 1990-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this article, the physical properties of the TOF scintillator counters used for the DELPHI Experiment at CERN are reported. But the main characteristics of the counters are: effective light attenuation length of 135 cm, effective light speed of 15.91 cm/ns, a time resolution of 1.2 ns, and an efficiency for detection of minimum ionizing particles of 99.9%.
Abstract: In this paper we report the physical properties of the time of flight (TOF) scintillator counters used for the DELPHI Experiment at CERN. We discuss the different choices studied for the wrapping of the counters in order to obtain best efficiencies for light transmission. A very good agreement of the performances of the counters has been found with the results of an original Monte Carlo program. The main characteristics of the TOF counters of DELPHI are: an effective light attenuation length of 135 cm, effective light speed of 15.91 cm/ns, a time resolution of 1.2 ns, and an efficiency for detection of minimum ionizing particles of 99.9%.
12 citations
01 Jul 1990-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this article, a method for calibration and test of large-area TOF counters using cosmic radiation was described. But the method was applied to the DELPHI detector at the LEP e + e − storage ring, made of scintillation counters (20 × 350 cm 2 ).
Abstract: We describe a method for calibration and test of large-area TOF counters using cosmic radiation. We applied the method to the time-of-flight system of the DELPHI detector at the LEP e + e − storage ring, made of scintillation (NE110) counters (20 × 350 cm 2 ). The photomultipliers used (EMI 9902KB) reach an average gain of 5×10 8 at 1700 V and the time resolution achieved is 1.2 ns. Using this method we measured the counter efficiencies as a function of the position; we obtained 135 cm for the effective attenuation length and 40 photoelectrons for a minimum-ionizing particle crossing the center of the counter.
5 citations