2014/11/03 by Jun Shi, Bing-Song Zou, B. S. Zou
Mathematics · Physics and Astronomy · #Atomic physics #Computer science #Crystal (programming language) #Crystal Ball #Lambda #Mathematics #Nuclear physics research studies #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Resonance (particle physics) #Sigma #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevc.91.035202
published as Phys. Rev. C 91, 035202 (2015) · 18 pages, 7 figures
arxiv created 2014/11/03 · openalex publication_date 2015/03/03 · arxiv updated 2015/03/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
With an effective Lagrangian approach, we analyze the K^\ensuremath-p\ensuremath→\ensuremathπ0\ensuremathΣ0 reaction to study the \ensuremathΛ hyperon resonances by fitting the Crystal Ball data on differential cross sections and \ensuremathΣ0 polarization with the center-of-mass energies of 1536--1676 MeV. Besides well-established Particle Data Group (PDG) four-star \ensuremathΛ resonances around this energy range, the \ensuremathΛ(1600)(1)/(2)+ resonance, listed as a three-star resonance in the PDG data, is found to be definitely needed. In addition, there is strong evidence for the existence of a new \ensuremathΛ((3)/(2)+) resonance around 1680 MeV.