Excited nucleon spectrum using a non-perturbatively improved clover fermion action

Details Excited nucleon spectrum using a non-perturbatively improved clover fermion action Excited nucleon spectrum using a non-perturbatively improved clover fermion action

2001-12-18

arxiv.org/abs/hep-lat/0112031v2

Nucl.Phys.Proc.Suppl.109A:89-95,2002

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 5 figures, uses espcrc2. Talk presented at Workshop on Lattice Hadron Physics, Colonial Club Resort, Cairns, Australi

Scientific paper

10.1016/S0920-5632(02)01395-6

We discuss the extraction of negative-parity baryon masses from lattice QCD calculations. The mass of the lowest-lying negative-parity $J = 1/2^{-}$ state is computed in quenched lattice QCD using an ${\cal O}(a)$-improved clover fermion action, and a splitting found with the nucleon mass. The calculation is performed on two lattice volumes, and three lattice spacings enabling a study of both finite-volume and finite-lattice-spacing uncertainties. A measurement of the first excited radial excitation of the nucleon finds a mass considerably larger than that of the negative-parity ground state, in accord with other lattice determinations but in disagreement with experiment. Results are also presented for the lightest negative-parity $I=3/2$ state.

Affiliated with

Also associated with

No associations

Rating

Excited nucleon spectrum using a non-perturbatively improved clover fermion action does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Excited nucleon spectrum using a non-perturbatively improved clover fermion action, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Excited nucleon spectrum using a non-perturbatively improved clover fermion action will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-521437