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Llanes Estrada, Felipe José and Bicudo, Pedro and Cotanch, Stephen and Maris, Pieter and Szczepaniak, Adam (2002) Chirally symmetric quark description of low energy pi-pi scattering. Physical Review D, 65 (7). ISSN 0556-2821
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Official URL: http://dx.doi.org/10.1103/PhysRevD.65.076008
Abstract
Weinberg’s theorem for π-π scattering, including the Adler zero at threshold in the chiral limit, is analyticall proved for microscopic quark models that preserve chiral symmetry. Implementing Ward-Takahashi identities, the isospin 0 and 2 scattering lengths are derived in exact agreement with Weinberg’s low energy results. Our proof applies to alternative quark formulations including the Hamiltonian and Euclidean space Dyson-Schwinger approaches. Finally, the threshold π-π scattering amplitudes are calculated using the Dyson- Schwinger equations in the rainbow-ladder truncation, confirming the formal derivation.
Item Type: | Article |
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Additional Information: | © 2002 The American Physical Society. |
Uncontrolled Keywords: | P-3(0) Condensed Vacuum, Bethe-Salpeter, Model, Meson, Vector, Equations, Masses |
Subjects: | Sciences > Physics |
ID Code: | 23467 |
Deposited On: | 11 Nov 2013 15:27 |
Last Modified: | 19 Feb 2015 09:06 |
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