2007/11/29 by Yu. S. Surovtsev, Surovtsev, Yu. S., P. Bydžovský +2
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.0711.4748
LaTex, 2 figures, 12 pages; presented at the XII Int. Conf. on Hadron Spectroscopy - Hadron07 (8-13 October 2007, Frascati, Italy). Corrected version
openalex publication_date 2007/11/29 · arxiv created 2008/06/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Considering analyticity, unitarity and an influence of coupled channels, experimental data on the isovector P-wave of pion-pion scattering was analyzed to study rho-like mesons below 1900 MeV. The analysis indicates evidently that in the energy range 1200--1800 MeV, there are three rho-like mesons: rho(1250), rho(1450) and rho(1600), unlike the PDG tables. The obtained P-wave pion-pion scattering length (a11=33.9+- 2.02 [10-3mpi+-3]) most matches to the one calculated in the local Nambu--Jona-Lasinio model.