Pion-nucleon phase shifts in heavy baryon chiral perturbation theory
- 1 October 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 56 (7), 4322-4327
- https://doi.org/10.1103/physrevd.56.4322
Abstract
We calculate the phase shifts in pion-nucleon scattering using the heavy baryon formalism. We consider phase shifts for the pion energy range of to MeV. We employ two different methods for calculating the phase shifts—the first using the full third order calculation of the pion-nucleon scattering amplitude and the second by including the resonances and as explicit degrees of freedom in the Lagrangian. We compare the results of the two methods with phase shifts extracted from fits to the pion-nucleon scattering data. We find good to fair agreement between the calculations and the phase shifts from scattering data.
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This publication has 14 references indexed in Scilit:
- Chiral prediction for the πNS-wave scattering lengthto order O()Physical Review C, 1995
- CHIRAL DYNAMICS IN NUCLEONS AND NUCLEIInternational Journal of Modern Physics E, 1995
- Strong Λπ phase shifts for CP violation in weak Ξ → Λπ decayPhysics Letters B, 1994
- Neutral pion photoproduction at thresholdPhysics Letters B, 1991
- Baryon chiral perturbation theory using a heavy fermion lagrangianPhysics Letters B, 1991
- Hyperon decays andCPnonconservationPhysical Review D, 1986
- Low-EnergyInteraction, and theCoupling ConstantPhysical Review B, 1965
- The effect of final-state interactions on the asymmetry parameter in cascade decay processesIl Nuovo Cimento (1869-1876), 1965
- Lectures on pions and nucleonsIl Nuovo Cimento (1869-1876), 1955
- Some General Relations between the Photoproduction and Scattering ofMesonsPhysical Review B, 1954