2004/05/04 by N. G. Kelkar, M. Nowakowski, K. P. Khemchandani +1 · 2 citations
Physics and Astronomy · #Atomic physics #Baryon #Computer science #Elastic scattering #High-Energy Particle Collisions Research #Interpretation (philosophy) #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Pentaquark #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Scattering #State (computer science) #hep-ph #nucl-th
paper · pdf · doi:10.1142/s0217732304014173
published as Mod.Phys.Lett. A19 (2004) 2001-2008 · 10 pages, 4 figures
arxiv created 2004/05/04 · openalex publication_date 2004/08/16 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Motivated by the recent experimental evidence of the exotic B=S=+1 baryonic state Θ (1540), we examine the older existing data on K + N elastic scattering through the time delay method. We find positive peaks in time delay around 1.545 and 1.6 GeV in the D 03 and P 01 partial waves of K + N scattering respectively, in agreement with experiments. We also find an indication of the J=3/2 Θ* spin-orbit partner to the Θ, in the P 03 partial wave at 1.6 GeV. We discuss the pros and cons of these findings in support of the interpretation of these peaks as possible exotics.