6533b855fe1ef96bd12b094c
RESEARCH PRODUCT
Inverse amplitude method in pi pi scattering in chiral perturbation theory to two loops
E. Ruiz ArriolaJuan Luis NievesM. Pavon Valderramasubject
PhysicsScattering amplitudeNuclear and High Energy PhysicsHigh Energy Physics - PhenomenologyChiral perturbation theoryAmplitudeScatteringQuantum mechanicsPartial wave analysisSaturation (graph theory)InverseFísicaResonance (particle physics)description
The inverse amplitude method is used to unitarize the two loop $\pi\pi$ 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 $\bar l_{1,2,3,4,}$ and existing experimental data is undertaken. A comparison to standard resonance saturation values for the two loop coefficients $\bar b_{1,2,3,4,5,6} $ is also carried out. Crossing violations are quantified and the convergence of the expansion is discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-01-01 |