2003/03/05 by M. I. Gorenstein, M. Gazdzicki, M. Gaździcki +2 · 6 citations
Earth and Planetary Sciences · Physics and Astronomy · #Anomaly (physics) #Condensed matter physics #Deconfinement #Hadron #High-Energy Particle Collisions Research #High-pressure geophysics and materials #Nuclear matter #Nuclear physics #Nucleon #Nucleus #Particle physics #Phase transition #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Range (aeronautics) #Rapidity #Strangeness #Strangeness production #Transverse mass #Transverse plane #hep-ph
paper · pdf · doi:10.1016/j.physletb.2003.06.043
published as Phys.Lett. B567 (2003) 175-178 · 7 pages, 2 figures
arxiv created 2003/03/05 · openalex publication_date 2003/07/31 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We found that the experimental results on transverse mass spectrum of kaons produced in central Pb+Pb (Au+Au) collisions show an anomalous dependence on the colliding energy. The inverse slope of the spectrum increases with the energy in the low (AGS) and high (RHIC) energy domains, whereas it remains constant in the intermediate (SPS) energy range. We argue that this anomaly is probably caused by the modification of the equation of state in the transition region between confined and deconfined matter. This observation may be considered as a new signal, in addition to the previously reported anomalies in the pion and strangeness production, of the onset of deconfinement located in the low SPS energy domain.