Partial-wave analysis of $K^+$ nucleon scattering
ORAL
Abstract
We have performed a partial-wave analysis of K$^+$-nucleon scattering in the beam momentum range from 0 to 1.5 GeV/c addressing the uncertainties of the results and comparing them with previous analyses. A careful treatment of the reaction threshold behavior is particularly important to avoid false indications of resonances. We find a T=0 scattering length which is not consistent with zero, contrary to what has been claimed by other analyses. The T=0 phase shifts for $\ell>0$ are found to be consistent with a pure spin-orbit potential. Some indications for the production of a T=0 pentaquark with spin-parity D5/2+ will be discussed.
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Authors
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William Gibbs
New Mexico State University
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Roberto Arceo
New Mexico State University