ID 31750
file
title alternative
重心系エネルギー61.4Gev以下での電子陽電子反応における電子およびミュー粒子の超対称性粒子探索
creator
Taketani, Atsushi
NDC
Electrical engineering
abstract
An experimental search for scalar electron and scalar muon, the super-symmetric partner of electron and muon, has been performed at TRISTAN e+e- collider at the National Laboratory of High Energy Physics, using the VENUS detector. The study has been made at center-of-mass energies from 55 to 61.4GeV with an integrated luminosity of 29.2pb-1. No events which are due to scalar electron or scalar muon are observed and lower mass limits are obtained as functions of photino mass.
contents
Contents / p1
1 Introduction / p3
 1.1 Standard model / p3
 1.2 Supersymmetry / p7
 1.3 Two-photon process / p11
2 Experimental Procedure / p13
 2.1 TRISTAN Accelerator / p13
 2.2 VENUS detector / p15
3 Trigger system / p24
 3.1 First-level trigger / p25
 3.2 Second-level trigger / p41
4 Data Analysis / p44
 4.1 Pre-selection / p44
 4.2 Electron-pair event selection / p48
 4.3 Muon-pair event selection / p49
 4.4 Selection for heavy stable particles / p50
 4.5 Luminosity measurement / p51
5 Results and Discussion / p53
 5.1 Background for two-photon process / p53
 5.2 Lepton production from two-photon collision / p58
 5.3 Search for superpartner / p63
6 Conclusion / p77
A Look-up table / p82
B Two-track limited trigger modules / p84
C Beam test of hadron response in the LG calorimeter / p86
SelfDOI
language
eng
nii type
Thesis or Dissertation
HU type
Doctoral Theses
DCMI type
text
format
application/pdf
text version
ETD
rights
Copyright(c) by Author
grantid
甲第827号
degreeGrantor
広島大学(Hiroshima University)
degreename Ja
博士(理学)
degreename En
Physical Science
degreelevel
doctoral
date of granted
1990-03-26
department
Graduate School of Science