Extended Partial-Wave Analysis of piN Scattering Data

R.A. Arndt , W.J. Briscoe , I.I. Strakovsky , R.L. Workman (GW)

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classification ⚛️ nucl-th hep-exhep-phnucl-ex

keywords dataanalysiselasticpartial-waveresultsscatteringamplitudeanalyses

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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 piN 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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Short-range correlations in nuclei
nucl-ex 2026-05 unverdicted novelty 2.0

Short-range correlated pairs account for roughly 20% of nucleons in any nucleus and nearly all high-momentum nucleons, originating from the nucleon-nucleon tensor force.