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Excitations of the nucleon with dynamical fermions

UKQCD collaboration·C. M. Maynard·LHP collaboration·D. G. Richards
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Abstract

We measure the spectrum of low-lying nucleon resonances using Bayesian fitting methods. We compare the masses obtained in the quenched approximation to those obtained with two flavours of dynamical fermions at a matched lattice spacing. At the pion masses employed in our simulations, we find that the mass of the first positive-parity nucleon excitation is always greater than that of the parity partner of the nucleon.

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UKQCD collaboration, C. M. Maynard, LHP collaboration, D. G. Richards. 2002-09-30. Excitations of the nucleon with dynamical fermions. https://doi.org/10.1016/s0920-5632(03)01539-1

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