2010/08/26 by A. Martínez Torres, E. Oset · 1 citation
Physics and Astronomy · #Algorithm #Computer science #High-Energy Particle Collisions Research #Interpretation (philosophy) #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph #hep-th #nucl-th
paper · pdf · doi:10.1103/physrevlett.105.092001
published as Phys.Rev.Lett.105:092001,2010 · Published in Phys. Rev. Lett
openalex publication_date 2010/08/26 · arxiv created 2010/08/30 · arxiv updated 2011/11/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We use a theoretical model of the \ensuremathγd\ensuremath→K+K^\ensuremath-np reaction adapted to the experiment done at LEPS where a peak was observed and associated with the \ensuremathΘ+(1540) pentaquark. The study shows that the method used in the experiment to assign momenta to the undetected proton and neutron, together with the chosen cuts, necessarily creates an artificial broad peak in the assumed K+n invariant mass in the region of the claimed \ensuremathΘ+(1540), such that the remaining strength seen for the experimental peak is compatible with a fluctuation of 2\ensuremathσ significance.