Studies of γγ→ΛΛ,Σ⁰Σ⁰ production at Belle

2006/09/26 by C. C. Kuo, Kuo, C. C.
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0609048

16 pages, 8 figures, submitted to ICHEP06 Conference, Moscow, Russia

arxiv created 2006/09/26 · arxiv updated 2019/08/13

Abstract

Cross sections for hyperon pair production from two-photon collisions, γγ→ΛΛ,Σ⁰Σ⁰, are measured in the 2-4 GeV energy region at Belle, using 464 fb^-1 of data. A contribution from the intermediate resonance η_c(1S) is observed, and the products of the two-photon width of the η_c(1S) and its branching ratios to ΛΛ and Σ⁰Σ⁰ are measured. The results will help test QCD models.

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