Published March 1994
| Version v1
Report
Total hadronic cross section measurement at TOPAZ
Description
We have updated total hadronic cross section using 9886 multi hadron events taken by the TOPAZ detector. The tuning of Monte Carlo simulation gives less systematic error, especially the track reconstruction efficiency of the Time Projection Chamber(TPC) [4] was well reproduced. The measured hadronic cross section is, σ-barh=143.0±1.4(stat.)±4.4(syst.)pb. in effective Born approximation. The value of the electromagnetic running coupling constant α-bar(582GeV2) is also updated from the obtained cross section. 1/α-bar(582GeV2)=128.9±0.6(stat.)±2.0(syst.). This is the first observation of SU(2)xU(1) running coupling. And, this is one of the most fundamental contribution of TRISTAN experiment. (author)
Additional details
Publishing Information
- Imprint Title
- Proceedings of the 2nd workshop on TRISTAN physics at high luminosities
- Imprint Pagination
- 451 p.
- Journal Page Range
- p. 63-79.
- Report number
- KEK-PROC--93-22
Conference
- Title
- 2. workshop on TRISTAN physics at high luminosities.
- Dates
- 24-26 Nov 1993.
- Place
- Tsukuba, Ibaraki (Japan).
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 25075485
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- COUPLING CONSTANTS; HADRONS; MONTE CARLO METHOD; PARTICLE INTERACTIONS; RADIATION DETECTORS; STANDARD MODEL; TOPAZ REACTOR; TOTAL CROSS SECTIONS; TRISTAN STORAGE RINGS
- Descriptors DEC
- CALCULATION METHODS; CROSS SECTIONS; ELEMENTARY PARTICLES; EXPERIMENTAL REACTORS; FIELD THEORIES; GRAND UNIFIED THEORY; HYDRIDE MODERATED REACTORS; INTERACTIONS; MATHEMATICAL MODELS; MEASURING INSTRUMENTS; PARTICLE MODELS; POWER REACTORS; QUANTUM FIELD THEORY; REACTORS; RESEARCH AND TEST REACTORS; STORAGE RINGS; UNIFIED GAUGE MODELS