Sigma term update - INSPIRE

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Sigma term update

Sep, 1990

8 pages

Published in:

Phys.Lett.B 253 (1991) 252-259

Published: 1991

DOI:

10.1016/0370-2693(91)91393-A

Report number:

BUTP-90-30-BERN,
HU-TFT-90-55

View in:

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Abstract: (Elsevier)

The determination of the σ-term from πN scattering is critically examined. The currently available data indicate σ≅45 MeV. Low-energy precision measurements are needed to clarify discrepancies in experimental data and to reduce the uncertainty in the strangeness content for which we obtain y ≅0.2.

pi nucleon: interaction
interaction: pi nucleon
scattering amplitude
current algebra: sigma term
low-energy theorem
hydrogen: mesic atom
pi: mesic atom
energy levels: mesic atom
symmetry breaking: SU(3)
baryon: mass spectrum

References(59)

Figures(0)

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