Inverse amplitude method in pi pi scattering in chiral perturbation theory to two loops
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Inverse amplitude method in pi pi scattering in chiral perturbation theory to two loops

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Inverse amplitude method in pi pi scattering in chiral perturbation theory to two loops

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Nieves Pamplona, Juan Miguel; Pavón Valderrama, Manuel; Ruiz Arriola, Enrique
Aquest document és un/a article, creat/da en: 2002
The inverse amplitude method is used to unitarize the two-loop pipi scattering amplitudes of SU(2) chiral perturbation theory in the I=0,J=0,I=1,J=1, and I=2,J=0 channels. An error analysis in terms of the low energy one-loop parameters (l) over bar (1,2,3,4) and existing experimental data is undertaken. A comparison to standard resonance saturation values for the two-loop coefficients (b) over bar (1,2,3,4,5,6) is also carried out. Crossing violations are quantified and the convergence of the expansion is discussed.

    Nieves Pamplona, Juan Miguel Pavón Valderrama, Manuel Ruiz Arriola, Enrique 2002 Inverse amplitude method in pi pi scattering in chiral perturbation theory to two loops Physical Review D 65 3 036002
http://dx.doi.org/10.1103/PhysRevD.65.036002
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