N* Spectrum using an O(a)-Improved Fermion Action
LHPC Collaboration, UKQCD Collaboration, D. G. Richards (Jefferson, Laboratory, Old Dominion University)
TL;DR
This paper discusses methods for constructing operators and calculating the N* spectrum, presenting improved data that reveals a clear mass splitting between the nucleon and its parity partner.
Contribution
It introduces an O(a)-improved fermion action approach for more accurate determination of the N* spectrum and parity partner masses.
Findings
Observed a clear mass splitting between nucleon and its parity partner.
Used O(a)-improved data for more precise calculations.
Demonstrated effective operator construction for N* spectrum analysis.
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 O(a)-improved data of the UKQCD Collaboration, and a clear splitting observed between the mass of the nucleon and its parity partner.
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