Radiative Transitions in Charmonium from Lattice QCD
Accepted version
Peer-reviewed
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Authors
Delaney, James
Thomas, Christopher E
Ryan, Sinéad M
Abstract
The coupling of various charmonium mesons to a photon is studied using
lattice QCD, giving access to radiative form factors and transitions, and
probing the mesons' structure. Methods are developed which allow the robust
determination of amplitudes, including those involving an excited state as well
as multiple form factors, for a range of kinematics. These are applied in
dynamical lattice QCD calculations using the distillation technique to compute
the underlying three-point correlation functions. Form factors and amplitudes
involving the low-lying charmonia,
Description
Keywords
hep-lat, hep-lat, hep-ph
Journal Title
Journal of High Energy Physics (JHEP)
Conference Name
Journal ISSN
1126-6708
1029-8479
1029-8479
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Publisher
SpringerOpen
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Sponsorship
STFC (ST/T000694/1)
STFC (2045177)
STFC (2045177)