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Bounds on radii and anomalous magnetic dipole moments of quarks and leptons from LEP, SLC and HERA

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Zeitschrift für Physik C Particles and Fields

Abstract

Leptons, quarks and gauge bosons are assumed to be pointlike particles in the Standard Model. Stringent bounds on the radii of quarks and leptons and their weak anomalous magnetic moments can be derived from the high-precision measurements at LEP and SLC. We find a model-independent bound ofR≲10−17 cm for quark and lepton radii. HERA will provide complementary information on the electromagnetic static properties of the quarks and the parameters of the charged quark currents.

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Authors and Affiliations

  1. IIIA Phys. Institut, RWTH, D-52056, Aachen, Germany

    G. Köpp

  2. CERN, CH-1211, Geneva 23, Switzerland

    D. Schaile

  3. Deutsches Elektronen-Synchrotron DESY, D-22603, Hamburg, Germany

    M. Spira & P. M. Zerwas

Authors
  1. G. Köpp
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  2. D. Schaile
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  3. M. Spira
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  4. P. M. Zerwas
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Köpp, G., Schaile, D., Spira, M. et al. Bounds on radii and anomalous magnetic dipole moments of quarks and leptons from LEP, SLC and HERA. Z. Phys. C - Particles and Fields 65, 545–549 (1995). https://doi.org/10.1007/BF01556142

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  • DOI: https://doi.org/10.1007/BF01556142

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