2007/10/09 by B. Tatischeff, E. Tomasi‐Gustafsson, E. Tomasi-Gustafsson · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex
paper · pdf · doi:10.1134/s1547477108050026
published as Phys.Part.Nucl.Lett.5:420-422,2008 · 3 pages, 4 figures. Follows 0710.1796. Both replace arXiv:0707.1261 [nucl-ex]
arxiv created 2007/10/09 · openalex publication_date 2008/09/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Our previous paper, part I of the same study, shows the different experimental spectra used to draw a conclusion on the genuine existence of narrow, weakly excited mesonic structures having masses below and a little above the pion (M = 139.56 MeV) mass. This study [1] was instigated by the observation, in the Σ+ disintegration—Σ+ → pP 0, P 0 → μ−μ+ [2]—of a narrow range of dimuon masses. The authors make a conclusion on the existence of a neutral intermediate state P 0 with a mass M = (214.3 ± 0.5) MeV. We present here some attempts to understand the possible nature of the structures observed in part I.