The Reaction $πN \to ππN$ at Threshold

Details The Reaction $πN \to ππN$ at Threshold The Reaction $πN \to ππN$ at Threshold

1994-04-08

arxiv.org/abs/hep-ph/9404236v1

Phys.Lett. B332 (1994) 415-418; Erratum-ibid. B338 (1994) 520

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pp, LateX (uses epsf.sty), 3 figures appended as ps files (split off as ppnf1.ps,ppnf2.ps,ppnf3.ps), CRN 94/19

Scientific paper

10.1016/0370-2693(94)91274-2

We consider the chiral expansion for the reaction $\pi N \to \pi \pi N$ in
heavy baryon chiral perturbation theory. To order $M_\pi$ we derive novel
low--energy theorems that compare favorably with recent determinations of the
total cross sections for $\pi^+ p \to \pi^+ \pi^+ n$ and $\pi^- p \to \pi^0
\pi^0 n$.

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