name

David Graham Richards

refid

27926

email

dgr@jlab.org

title

The Calculation of the $N^*$ Spectrum in Lattice QCD

collaboration

abstract

The construction of operators and calculational methods for the determination
of the $N^*$ spectrum are discussed. The masses of the parity partners
of the nucleon and delta are computed from the ${\cal O}(a)$-improved data
of the UKQCD Collaboration, and a clear splitting observed between the mass
of the nucleon and its parity partner. Results are compared with previous
determinations using domain-wall fermions and highly-improved fermion actions.

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