Influence of aZ+(1540)resonance onK+Nscattering

2003/09/21 by J. Haidenbauer, G. Krein · 11 citations
Mathematics · Physics and Astronomy · #Algorithm #Atomic physics #Computer science #High-Energy Particle Collisions Research #Mathematics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Resonance (particle physics) #Section (typography) #State (computer science) #hep-ex #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.1103/physrevc.68.052201

published as Phys.Rev.C68:052201,2003 · 9 pages, RevTeX, 3 eps figures

arxiv created 2003/09/21 · openalex publication_date 2003/11/18 · arxiv updated 2010/04/06 · openalex created_date 2017/03/16 · openalex updated_date 2026/08/05

Abstract

The impact of a (I=0,J^P=(1)/(2)⁺)Z⁺(1540) resonance with a width of 5\phantom\rule0.3em0exMeV or more on the K⁺N(I=0) elastic cross section and on the P₀₁ phase shift is examined within the KN meson-exchange model of the J"ulich group. It is shown that the rather strong enhancement of the cross section caused by the presence of a Z⁺ with the above properties is not compatible with the existing empirical information on KN scattering. Only a much narrower Z⁺ state could be reconciled with the existing data---or, alternatively, the Z⁺ state must lie at an energy much closer to the KN threshold.

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