2007/09/05 by M. Švec, Miloslav Svec, Svec, Miloslav · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.0709.0688
45 pages, 16 figures, 5 tables, revised Section XII
openalex publication_date 2007/09/05 · arxiv created 2007/09/18 · arxiv updated 2009/12/01 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
Unitary evolution from pure initial states to pure final states in pi(-)p-> pi(-)pi(+)n imposes constraints on pion production amplitudes that are violated by CERN data on polarized target at 17.2 GeV/c. The pion creation is a non-unitary process arising from a unitary co-evolution of the pion creation process with a quantum environment. The purpose of this work is to identify the interacting degrees of freedom of the environment in a high resolution amplitude analysis of CERN data on polarized target for dipion masses 580-1080 MeV. The S-wave spectra |S|2 show presence of rho0(770) while P-wave spectra |L|2 show a dip at f0(980) mass. The observed rho0(770)-f0(980) mixing is encoded in all measured density matrix elements which also encode a level splitting of the spectra arising from the interaction of the pion creation process with the environment. The analytical form of the level splitting reveals the existence of a new quantum number characterizing the environment. We propose a model for the CPT violating interaction of the pion creation process with the environment in which non-diagonal transitions between resonant qqbar modes and pi(-)pi(+) states lead to vector-scalar mixing and a dynamic entanglement of the pi(-)pi(+) isospin states. The final states pi(-)p(+)n do not posses CPT cojugate states and the concept of CPT symmetry looses its meanining.