Pi-Pi Scattering Lengths in the Light of Precision Measurements

Details Pi-Pi Scattering Lengths in the Light of Precision Measurements Pi-Pi Scattering Lengths in the Light of Precision Measurements

2007-12-27

arxiv.org/abs/0712.4162v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages 1 figure; LaTeX. The .tar file contains 3 files: scl2.tex is the LaTeX file; scl2.pdf is the generated .pdf file, and

Scientific paper

I summarize the history of theoretical predictions of, and experimental
attempts to measure, pion-pion (S-wave) scattering lengths. Recent measurements
at CERN confirm Weinberg's 1966 prediction of the I=2 scattering length and
Basdevant and Lee's subsequent correction of the Weinberg I=0 value by
inclusion of an S-wave I=0 resonance.

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