Heavy quarkonium hyperfine structure and leptonic decays

Details Heavy quarkonium hyperfine structure and leptonic decays Heavy quarkonium hyperfine structure and leptonic decays

2003-08-14

arxiv.org/abs/hep-ph/0308150v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk at the XXIII Physics in Collisions Conference (PIC03), Zeuthen, Germany, June 2003, 3 pages, LaTeX. PSN FRAP05

Scientific paper

The relation between the hyperfine structure and leptonic decay rates of
heavy quarkonia is considered with the account of relativistic and radiative
corrections. The calculated decay rates agree well with the available
experimental data, while the predicted eta_c(2S) mass is significantly smaller
than the value measured recently by the Belle and BaBar Collaborations.

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