Two-Photon Decays of Charmonia from Lattice QCD
Journal Article
·
· Physical Review Letters
- Jefferson Laboratory MS 12H2, 12000 Jefferson Avenue, Newport News, Virginia 23606 (United States)
We make the first calculation in lattice QCD of two-photon decays of mesons. Working in the charmonium sector, using the Lehmann-Symanzik-Zimmermann reduction to relate a photon to a sum of hadronic vector eigenstates, we compute form factors in both the spacelike and timelike domains for the transitions {eta}{sub c}{yields}{gamma}*{gamma}* and {chi}{sub c0}{yields}{gamma}*{gamma}*. At the on-shell point, we find approximate agreement with experimental world-average values.
- OSTI ID:
- 20861040
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 17 Vol. 97; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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