Chiral prediction for the πn S-wave scattering length a- to order O(Mπ4)

V. Bernard; N. Kaiser; Ulf G. Meissner

doi:10.1103/PhysRevC.52.2185

Chiral prediction for the πn S-wave scattering length a- to order O(Mπ4)

V. Bernard, N. Kaiser, Ulf G. Meissner

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Abstract

We evaluate the S-wave pion-nucleon scattering length a- in the framework of heavy baryon chiral perturbation theory up-to-and-including terms of order Mπ4. We show that the order Mπ4 piece of the isovector amplitude at threshold, Tthr-, vanishes exactly. We predict for the isovector scattering length, 0.088Mπ+-1≤a-≤0.096Mπ+-1.

Original language	English
Pages (from-to)	2185-2187
Number of pages	3
Journal	Physical Review C - Nuclear Physics
Volume	52
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.52.2185
State	Published - 1995

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title = "Chiral prediction for the πn S-wave scattering length a- to order O(Mπ4)",

abstract = "We evaluate the S-wave pion-nucleon scattering length a- in the framework of heavy baryon chiral perturbation theory up-to-and-including terms of order Mπ4. We show that the order Mπ4 piece of the isovector amplitude at threshold, Tthr-, vanishes exactly. We predict for the isovector scattering length, 0.088Mπ+-1≤a-≤0.096Mπ+-1.",

author = "V. Bernard and N. Kaiser and Meissner, {Ulf G.}",

year = "1995",

doi = "10.1103/PhysRevC.52.2185",

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AU - Bernard, V.

AU - Kaiser, N.

AU - Meissner, Ulf G.

PY - 1995

Y1 - 1995

N2 - We evaluate the S-wave pion-nucleon scattering length a- in the framework of heavy baryon chiral perturbation theory up-to-and-including terms of order Mπ4. We show that the order Mπ4 piece of the isovector amplitude at threshold, Tthr-, vanishes exactly. We predict for the isovector scattering length, 0.088Mπ+-1≤a-≤0.096Mπ+-1.

AB - We evaluate the S-wave pion-nucleon scattering length a- in the framework of heavy baryon chiral perturbation theory up-to-and-including terms of order Mπ4. We show that the order Mπ4 piece of the isovector amplitude at threshold, Tthr-, vanishes exactly. We predict for the isovector scattering length, 0.088Mπ+-1≤a-≤0.096Mπ+-1.

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U2 - 10.1103/PhysRevC.52.2185

DO - 10.1103/PhysRevC.52.2185

M3 - Article

AN - SCOPUS:11544341229

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EP - 2187

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

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ER -

Chiral prediction for the πn S-wave scattering length a- to order O(Mπ4)

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