QED test at LEP200 energies in the reaction e+e-→γγ(γ)
Creators
- 1. Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas, Avda. Complutense 22, 28040 Madrid (Spain)
- 2. Institute of Mathematics and Informatics, University of Warmia and Mazury, PL-10-561 Olsztyn (Poland)
- 3. Labor fuer Hoechenergiephysik, ETH-Hoenggerberg, HPK-Gebaeude, CH-8093 Zurich (Switzerland)
- 4. Chinese University of Science and Technology, USTC, Anhui 230029 Hefei (China)
Description
The measurements of the QED reaction e+e-→γγ(γ) performed with the L3 detector are used to search for new physics phenomena beyond the Standard Model. No evidence for these phenomena is found and new limits on their parameters are set. First the reaction is used to constrain a model of an excited electron and second to study contact interactions. The total and differential cross sections for the process e+e-→γγ(γ), are measured at energies from 91 GeV to 202 GeV using the data collected with the L3 detector from 1991 to 1999. The L3 data set lower limits on the mass of an excited electron me*>402 GeV, on the QED cutoff parameters Λ+>415 GeV, Λ->258 GeV and on the contact interaction energy scale Λ>1687 GeV. The last parameter limits the size of the interaction area to R<1.17x10-17 cm. Some limits on the string and quantum gravity scales are also discussed
Additional details
Identifiers
- DOI
- 10.1063/1.1374992;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 564
- Journal Issue
- 1
- Journal Page Range
- p. 255-262
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- 2. workshop on frontier tests of quantum electrodynamics and physics of the vacuum
- Acronym
- QED 2000
- Dates
- 5-11 Oct 2000
- Place
- Trieste (Italy)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35052752
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference, Numerical Data
- Descriptors DEI
- EFFECTIVE MASS; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; EXCITED STATES; EXPERIMENTAL DATA; LEP STORAGE RINGS; MULTIPARTICLE SPECTROMETERS; PHOTONS; QUANTUM ELECTRODYNAMICS; QUANTUM GRAVITY; STANDARD MODEL; STRING MODELS
- Descriptors DEC
- ACCELERATORS; BOSONS; COMPOSITE MODELS; CYCLIC ACCELERATORS; DATA; ELECTRODYNAMICS; ELEMENTARY PARTICLES; ENERGY LEVELS; EXTENDED PARTICLE MODEL; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; INFORMATION; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; MASS; MASSLESS PARTICLES; MATHEMATICAL MODELS; MEASURING INSTRUMENTS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE MODELS; QUANTUM FIELD THEORY; QUARK MODEL; SPECTROMETERS; STORAGE RINGS; SYNCHROTRONS; UNIFIED GAUGE MODELS
Optional Information
- Notes
- (c) 2001 American Institute of Physics.