Dynamical coupled channel calculation of pion and omega meson production

Paris, Mark

doi:10.1103/PhysRevC.79.025208

Dynamical coupled channel calculation of pion and omega meson production

Journal Article · Thu Jan 01 04:00:00 EST 2009 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.79.025208· OSTI ID:956182

Paris, Mark

A dynamical coupled channel approach is used to study $$\pi$$ and $$\omega$$--meson production induced by pions and photons scattering from the proton. Six-channels are used to fit unpolarized and polarized scattering data including $$\pi N$$, $$\eta N$$, $$\pi\Delta$$, $$\sigma N$$, $$\rho N$$, $$\omega N$$. Bare parameters in an effective hadronic Lagrangian are fixed in $$\chi^2$$-fits to data from $$\pi N \to \pi N$$, $$\gamma N \to \pi N$$, $$\pi^- p \to \omega n$$, and $$\gamma p \to \omega p$$ reactions at center-of-mass energies from threshold to $E < 2.0$ GeV. The $$T$$ matrix determined in these fits is used to calculate the photon beam asymmetry for $$\omega$$-meson production and the $$\omega N \to \omega N$$ total cross section and scattering lengths.

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Research Organization:: Thomas Jefferson Lab National Accelerator Facility

Sponsoring Organization:: USDOE

OSTI ID:: 956182

Report Number(s):: JLAB-THY-08-801; arXiv:0802.3383; DOE/OR/23177-0324

Journal Information:: Physical Review C, Journal Name: Physical Review C; ISSN 0556-2813; ISSN PRVCAN

Country of Publication:: United States

Language:: English

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