6533b854fe1ef96bd12afc3b
RESEARCH PRODUCT
Computing the nucleon Dirac radius directly at $Q^2=0$
John W. NegeleMichael EngelhardtStefan KriegNesreen HasanStefan MeinelAndrew PochinskyJeremy GreenSergey SyritsynSergey Syritsynsubject
PhysicsPionIsovectorMagnetic momentHigh Energy Physics::LatticeLattice (order)Excited stateQuantum electrodynamicsNuclear TheoryGround stateNucleondescription
We describe a lattice approach for directly computing momentum derivatives of nucleon matrix elements using the Rome method, which we apply to obtain the isovector magnetic moment and Dirac radius. We present preliminary results calculated at the physical pion mass using a 2HEX-smeared Wilson-clover action. For removing the effects of excited-state contamination, the calculations were done at three source-sink separations and the summation method was used.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-12-27 | Proceedings of 34th annual International Symposium on Lattice Field Theory — PoS(LATTICE2016) |