2004/04/30 by Tao Huang, Yunde Li, Yun‐De Li +3
Physics and Astronomy · #High-Energy Particle Collisions Research #Isospin #Large Hadron Collider #Mathematical physics #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #String (physics) #astro-ph #hep-ph #hep-th #nucl-th
paper · pdf · doi:10.1103/physrevc.71.014902
published as Phys.Rev.C71:014902,2005 · 8 pages, 3 figures, one reference added, title changed, version accepted for publication in Phys. Rev. C
arxiv created 2004/12/02 · openalex publication_date 2005/01/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the possible signals of a pion string associated with the QCD chiral phase transition in LHC Pb-Pb collision at energy √(s)=5.5\phantom\rule0.3em0exTeV. In terms of the Kibble-Zurek mechanism we discuss the production and evolution of the pion string. The pion string is not topologically stable; it decays into neutral pions and sigma mesons that in turn decay into pions. Our results show that all the neutral pions from the pion string are distributed at the low momentum and the ratio of neutral to charged pions from the pion string violates the isospin symmetry. For the momentum spectra of the total pions, the signal from the sigma particle decay from the pion string will be affected by the large decay width of the sigma significantly.