2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/114903One important quarkonia result from the Tevatron experiments is the ratio of direct inclusive production of χ_{c1} to χ_{c2}, which is most readily measured using χ_{cJ}\toγJ/ψdecays. This note uses CLEO publications to obtain a ratio of these radiative branching fractions, {\cal B}(χ_{c1}\toγJ/ψ)/{\cal B}(χ_{c2}\toγJ/ψ) = 1.91 \pm 0.10, using cancelation in systematic uncertainties not available in the Particle Data Group listings.3 pages, including title page; no figuresHigh Energy Physics - Experimenttext