Absorptive part of meson--baryon scattering amplitude and baryon polarization in chiral perturbation theory

Details Absorptive part of meson--baryon scattering amplitude and baryon polarization in chiral perturbation theory Absorptive part of meson--baryon scattering amplitude and baryon polarization in chiral perturbation theory

2008-10-27

arxiv.org/abs/0810.4954v1

Int.J.Mod.Phys.E17:1477-1497,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1142/S0218301308010544

We compute the spin asymmetry and polarization of the final-state baryon in its rest frame in two-body meson--baryon low-energy scattering with unpolarized initial state, to lowest non-trivial order in BChPT. The required absorptive amplitudes are obtained analytically at one-loop level. We discuss the polarization results numerically for several meson--baryon processes. Even at low energies above threshold, where BChPT can reasonably be expected to be applicable, sizable values of polarization are found for some processes.

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