Reparameterization Invariant Operator Basis for NRQED and HQET
arXiv:1810.02356 · doi:10.1007/JHEP11(2019)012
Abstract
We discuss how reparameterization invariance connects a rotationally-invariant heavy particle effective theory with a single fermion to a Lorentz-invariant theory. Using Hilbert-series methods, a Lorentz-invariant operator basis is tabulated, up to and including operators of order , when the fermion couples to an external or gauge interaction.
arXiv comment18 pages, 4 tables; expanded introduction
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