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Systematic effects in the R({epsilon}`/{epsilon}) measurement for NA31; Effets systematiques sur la mesure de R({epsilon}`/{epsilon}) dans NA31

Abstract

The aim of this thesis is to report the works done by the author during the NA31 experiment from 1989 to 1993. The framework of this work is the measurement of R({epsilon}`/{epsilon}) parameter using 1989 data. The experiment consist in large sample records of kaons into two pions disintegration modes. Differences in detector response for one of the two modes and/or in one of the two beams used has been systematically verified and studied and eventually corrected. After a presentation of the apparatus used in the NA31 experiment, the procedure of reconstruction and analysis of charged and neutral events is described. Monte-Carlo simulations are applied to simulate the different diffused kaon sources after evaluation and removal of the different background noises. Corrections for the effects of accidental particles is taken into account in the background noise estimation. A disturbance in the shower counter measurements has led to the conception of a new control device which can provide additional informations for the calculation of new characteristic quantities for reconstituted particles. These informations have been used for the estimation of accidental triggered events and for the determination of the fraction of lost events due to accidental photon. A satisfactory agreement is observed  More>>
Authors:
Publication Date:
Dec 01, 1994
Product Type:
Technical Report
Report Number:
LAL-94-84
Reference Number:
SCA: 662420; 662350; 661220; PA: AIX-27:020734; EDB-96:049326; NTS-96:016135; SN: 96001551387
Resource Relation:
Other Information: PBD: Dec 1994
Subject:
66 PHYSICS; KAONS NEUTRAL; KAON BEAMS; PIONS; HODOSCOPES; PION DETECTION; SHOWER COUNTERS; BACKGROUND NOISE; BARYON NUMBER; COSMOLOGICAL MODELS; DIGITAL CIRCUITS; ELECTRON DETECTION; ENERGY SPECTRA; GRAND UNIFIED THEORY; KAON-NUCLEON INTERACTIONS; MEMORY DEVICES; MESONS; MONTE CARLO METHOD; MULTIWIRE PROPORTIONAL CHAMBERS; PHOTON EMISSION; PROTON BEAMS; QUANTUM ELECTRODYNAMICS; TIME MEASUREMENT; TRIGGER CIRCUITS
OSTI ID:
189700
Research Organizations:
Paris-11 Univ., 91 - Orsay (France). Lab. de l`Accelerateur Lineaire
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Other: ON: DE96616441; TRN: FR9504406020734
Availability:
INIS; OSTI as DE96616441
Submitting Site:
FRN
Size:
284 p.
Announcement Date:
Mar 07, 1996

Citation Formats

Perdereau, O. Systematic effects in the R({epsilon}`/{epsilon}) measurement for NA31; Effets systematiques sur la mesure de R({epsilon}`/{epsilon}) dans NA31. France: N. p., 1994. Web.
Perdereau, O. Systematic effects in the R({epsilon}`/{epsilon}) measurement for NA31; Effets systematiques sur la mesure de R({epsilon}`/{epsilon}) dans NA31. France.
Perdereau, O. 1994. "Systematic effects in the R({epsilon}`/{epsilon}) measurement for NA31; Effets systematiques sur la mesure de R({epsilon}`/{epsilon}) dans NA31." France.
@misc{etde_189700,
title = {Systematic effects in the R({epsilon}`/{epsilon}) measurement for NA31; Effets systematiques sur la mesure de R({epsilon}`/{epsilon}) dans NA31}
author = {Perdereau, O}
abstractNote = {The aim of this thesis is to report the works done by the author during the NA31 experiment from 1989 to 1993. The framework of this work is the measurement of R({epsilon}`/{epsilon}) parameter using 1989 data. The experiment consist in large sample records of kaons into two pions disintegration modes. Differences in detector response for one of the two modes and/or in one of the two beams used has been systematically verified and studied and eventually corrected. After a presentation of the apparatus used in the NA31 experiment, the procedure of reconstruction and analysis of charged and neutral events is described. Monte-Carlo simulations are applied to simulate the different diffused kaon sources after evaluation and removal of the different background noises. Corrections for the effects of accidental particles is taken into account in the background noise estimation. A disturbance in the shower counter measurements has led to the conception of a new control device which can provide additional informations for the calculation of new characteristic quantities for reconstituted particles. These informations have been used for the estimation of accidental triggered events and for the determination of the fraction of lost events due to accidental photon. A satisfactory agreement is observed between the results and results of the superposition method. (J.S.). 77 refs., 129 figs., 40 tabs, 1 ann.}
place = {France}
year = {1994}
month = {Dec}
}