1996/07/25 by Paul Singer, Singer, Paul · 1 citation
Physics and Astronomy · #Atomic and Subatomic Physics Research #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9607429
Lecture presented at the Workshop on K-Physics, Orsay, France, 30 May - 4 June, 1996. 9 pages
arxiv created 1996/07/25 · openalex publication_date 1996/07/25 · arxiv updated 2009/11/30 · openalex created_date 2019/12/26 · openalex updated_date 2026/07/28
We survey the possibilities of detecting the s → d γ transition in kaon and hyperon radiative decays. In the more frequent decays, like K+ → π+ πo γ, K+ → π+ ℓ+ ℓ-, the short-distance contribution is obscured by various long-distance transitions. Among the hyperon radiative decays, Ξ- → Σ- γ and Ω- → Ξ- γ are the leading candidates for providing a window to the short-distance s → d γ. The long-distance s → d γ transitions are also analyzed; their magnitude depends on the size of the deviation from a sum-rule among couplings of vector mesons to photons. The measurement of Ω- → Ξ- γ could provide information on the relative size of the short and long-distance contributions to the magnetic component of s → d γ.