3 papers
hep-ph2019
Baryon Number, Lepton Number, and Operator Dimension in the SMEFT with Flavor Symmetries
Andreas Helset, Andrew Kobach
For a large set of flavor symmetries, the lowest-dimensional baryon- or lepton-number violating operators in the Standard Model effective field theory (SMEFT) with flavor symmetry…
hep-ph2018
Reparameterization Invariant Operator Basis for NRQED and HQET
Andrew Kobach, Sridip Pal
We discuss how reparameterization invariance connects a rotationally-invariant heavy particle effective theory with a single fermion to a Lorentz-invariant theory. Using Hilbert-se…
hep-ph2018
Conformal Structure of the Heavy Particle EFT Operator Basis
Andrew Kobach, Sridip Pal
An operator basis of an effective theory with a heavy particle, subject to external gauge fields, is spanned by a particular kind of neutral scalar primary of the nonrelativistic c…