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Can one detect zeroes of the pion form factor?

  • Published:
Zeitschrift für Physik A Atoms and Nuclei

Abstract

We discuss the question of zeroes of the pion form factor by a method which allows us to “quantify” the unavoidable assumptions concerning the high energy behaviour. The conclusion is that all the present data are consistent with the absence of zeroes inside the cutt-plane. If zeroes do exist, then they are excluded from certain regions around the data, whose boundaries are given in the text. (E.g. zeroes on the negative realt-axis are confined to the left of t0= −6.5 (GeV/c)2.)

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Authors and Affiliations

  1. Institute of Physics, Bucharest

    I. Raszillier

  2. Institut für Experimentelle Kernphysik des Kernforschungszentrums der Universität Karlsruhe, Federal Republic of Germany

    W. Schmidt & I. -Sabba Stefanescu

Authors
  1. I. Raszillier
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  2. W. Schmidt
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  3. I. -Sabba Stefanescu
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Additional information

Supported by Bundesministerium für Forschung und Technologie; on leave of absence from the Institute for Atomic Physics, Bucharest, Rumania

We wish to thank Prof. G. Höhler for discussions and Dr. C. Lang for providing us with a parametrization of theππ J = 1 phase.

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Raszillier, I., Schmidt, W. & Stefanescu, I.S. Can one detect zeroes of the pion form factor?. Z Physik A 277, 211–215 (1976). https://doi.org/10.1007/BF01433715

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  • DOI: https://doi.org/10.1007/BF01433715

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