Form factor of the σ-term

We use dispersion relations to calculate the nucleon from factor of the scalar operator uu+ dd and show that the corresponding mean square radius is remarkably large.

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Bibliographic Details
Published in:Physics letters. B 1991-01, Vol.253 (1), p.260-264
Main Authors: Gasser, J., Leutwyler, H., Sainio, M.E.
Format: Article
Language:English
Subjects:
Classical and quantum physics: mechanics and fields
Exact sciences and technology
Physics
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Description
Summary:We use dispersion relations to calculate the nucleon from factor of the scalar operator uu+ dd and show that the corresponding mean square radius is remarkably large.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(91)91394-B