Extended Partial-Wave Analysis Of Pi N Scattering Data

PHYSICAL REVIEW C(2006)

引用 472|浏览21
摘要
We present results from a comprehensive partial-wave analysis of pi(+/-)p elastic scattering and charge-exchange data, covering the region from threshold to 2.6 GeV in the lab pion kinetic energy, employing a coupled-channel formalism to simultaneously fit pi(-)p ->eta n data to 0.8 GeV. Our main result, solution SP06, utilizes a complete set of forward and fixed-t dispersion relation constraints applied to the pi N elastic amplitude. The results of these analyses are compared with previous solutions in terms of their resonance spectra and preferred values for couplings and low-energy parameters.
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关键词
dispersion relation,kinetic energy,elastic scattering
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