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A Crucial Test for QCD : The Time-Like E.M. form Factors of the Neutron

  • Chapter
The Challenging Questions

Part of the book series: The Subnuclear Series ((SUS,volume 27))

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Abstract

The neutron e.m. time-like form factors (FF) have never been measured and the purpose of this talk is to demonstrate that this measurement is mandatory for understanding the nucleon structure. Actually the nucleon structure needs still to be investigated (as it has been proved by the recent, surprising, EMC results[1]), in spite of the overwhelming number of data collected in elastic and inelastic lepton-nucleon scattering. The current nucleon models, which reproduce either the proton FF and the neutron space-like FF, are in bad disagreement in providing the cross section for

$${e^ + }{e^ - } \to n\bar n$$

in the range experimentally accessible, with present storage rings: 4M 2N ≤ Q2 ≤ 10 GeV2.

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Authors and Affiliations

  1. INFN - Laboratori Nazionali di Frascati, P.O. Box 13, I-00044, Frascati, Italy

    Rinaldo Baldini Ferroli Celio

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  1. Rinaldo Baldini Ferroli Celio
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  1. European Physical Society, Geneva, Switzerland

    Antonino Zichichi

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Celio, R.B.F. (1990). A Crucial Test for QCD : The Time-Like E.M. form Factors of the Neutron. In: Zichichi, A. (eds) The Challenging Questions. The Subnuclear Series, vol 27. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3828-8_11

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  • DOI: https://doi.org/10.1007/978-1-4615-3828-8_11

  • Publisher Name: Springer, Boston, MA

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