2003/01/26 by Ya. I. Azimov
Physics and Astronomy · #Atomic and Subatomic Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph #nucl-th
paper · pdf · doi:10.1134/1.1625742
published as Phys.Atom.Nucl.66:1989-1993,2003; Yad.Fiz.66:2039-2043,2003 · Talk presented at KTM-80, dedicated to 80th anniversary of K.A.Ter-Martirosyan, Moscow, ITEP, 30 Sep.--1 Oct. 2002; to be published in Proceedings (a special issue of Phys.Atom.Nucl.). LATEX, 9 pages, 1 eps fig
arxiv created 2003/01/26 · openalex publication_date 2003/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
The influence of isospin-violating (ρ 0, ω) mixing is discussed for any pair of decays of ρ 0, ω into the same final state. It is demonstrated, in analogy to the CP violation in neutral kaon decays, that isospin violation can manifest itself in various forms: direct violation in amplitudes and/or violation due to mixing. In addition to the known decays (ρ 0, ω) → π + π − and (ρ 0, ω) → π 0γ, the pair of decays to e + e − and the whole set of radiative decays with participation of ρ 0, ω (in initial or final states) are also shown to be useful and promising for studies. Existing data on these decays agree with the universal character of the mixing parameter and indirectly support enhancement of ρ 0 → π 0 γ in respect to ρ ± → π ± γ. Future precise measurements will allow one to separate different forms of isospin violation and elucidate their mechanisms.