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Title: Test of non point-like behavior of Fermions

Abstract

We search in measurements from LEP, TRISTAN, CDF, D0 and UA1 for those phenomena beyond the Standard Model where the fundamental particles can exhibit non point-like behavior. The total and differential cross sections for the reaction e+e- {yields} {gamma}{gamma}({gamma}) measured at center-of-mass energies from 55 GeV to 207 GeV are used for a global fit to test the hypothesis of an excited electron and contact interaction induced terms. The best value for the fit exhibits an approximately 5 {sigma} effect for the scale factor of an excited electron of (1/{lambda}{sub {+-}}{sup 4}){sub best} = -(1.11 {+-} 0.20) x 10{sup -10} GeV{sup -4} and the scale of contact interaction of (1/{lambda}4)best = -(4.05 {+-} 0.73) x 10-13 GeV-4 but with the opposite to the expected in the modified cross section sign. An empirical scheme is discussed to encompass all fermions and bosons in one framework, if these particles would be geometrically extended objects.

Authors:
; ;  [1];  [2];  [3];  [4]; ;  [5]
  1. Swiss Institute of Technology, ETH-Zuerich, 8093 Zurich (Switzerland)
  2. National Central University, Jhungli 320, Taiwan (China)
  3. TH Division, Department of Physics, CERN, CH-1211 Geneva 23 (Switzerland)
  4. (Switzerland)
  5. University of Science and Technology of China, Hefei Anhui 230029 (China)
Publication Date:
OSTI Identifier:
21056884
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 892; Journal Issue: 1; Conference: QCHS7: 7. conference on quark confinement and the hadron spectrum, Ponta Delgada, Acores (Portugal), 2-7 Sep 2006; Other Information: DOI: 10.1063/1.2714444; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BOSONS; DIFFERENTIAL CROSS SECTIONS; ELECTRON-POSITRON INTERACTIONS; ELECTRONS; FERMILAB COLLIDER DETECTOR; GEV RANGE; LEP STORAGE RINGS; MULTIPARTICLE SPECTROMETERS; PARTICLE IDENTIFICATION; PHOTONS; STANDARD MODEL; TOTAL CROSS SECTIONS

Citation Formats

Burch, Urs, Rubbia, Andre, Ulbricht, Juergen, Lin, C.-H., Sakharov, Alexander S., Swiss Institute of Technology, ETH-Zuerich, 8093 Zurich, Wu Jian, and Zhao Jiawei. Test of non point-like behavior of Fermions. United States: N. p., 2007. Web. doi:10.1063/1.2714444.
Burch, Urs, Rubbia, Andre, Ulbricht, Juergen, Lin, C.-H., Sakharov, Alexander S., Swiss Institute of Technology, ETH-Zuerich, 8093 Zurich, Wu Jian, & Zhao Jiawei. Test of non point-like behavior of Fermions. United States. doi:10.1063/1.2714444.
Burch, Urs, Rubbia, Andre, Ulbricht, Juergen, Lin, C.-H., Sakharov, Alexander S., Swiss Institute of Technology, ETH-Zuerich, 8093 Zurich, Wu Jian, and Zhao Jiawei. Tue . "Test of non point-like behavior of Fermions". United States. doi:10.1063/1.2714444.
@article{osti_21056884,
title = {Test of non point-like behavior of Fermions},
author = {Burch, Urs and Rubbia, Andre and Ulbricht, Juergen and Lin, C.-H. and Sakharov, Alexander S. and Swiss Institute of Technology, ETH-Zuerich, 8093 Zurich and Wu Jian and Zhao Jiawei},
abstractNote = {We search in measurements from LEP, TRISTAN, CDF, D0 and UA1 for those phenomena beyond the Standard Model where the fundamental particles can exhibit non point-like behavior. The total and differential cross sections for the reaction e+e- {yields} {gamma}{gamma}({gamma}) measured at center-of-mass energies from 55 GeV to 207 GeV are used for a global fit to test the hypothesis of an excited electron and contact interaction induced terms. The best value for the fit exhibits an approximately 5 {sigma} effect for the scale factor of an excited electron of (1/{lambda}{sub {+-}}{sup 4}){sub best} = -(1.11 {+-} 0.20) x 10{sup -10} GeV{sup -4} and the scale of contact interaction of (1/{lambda}4)best = -(4.05 {+-} 0.73) x 10-13 GeV-4 but with the opposite to the expected in the modified cross section sign. An empirical scheme is discussed to encompass all fermions and bosons in one framework, if these particles would be geometrically extended objects.},
doi = {10.1063/1.2714444},
journal = {AIP Conference Proceedings},
number = 1,
volume = 892,
place = {United States},
year = {Tue Feb 27 00:00:00 EST 2007},
month = {Tue Feb 27 00:00:00 EST 2007}
}
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