A. Martínez Torres, M. Bayar, D. Jido, E. Oset
Theoretical studies within the chiral unitary approach, and recent
experiments, have provided evidence of the existence of two isoscalar states in
the region of the $\Lambda(1405)$. In this paper we use the same chiral
approach to generate energy levels in a finite box. In a second step, assuming
that these energies correspond to lattice QCD results, we devise the best
strategy of analysis to obtain the two states in the infinite volume case, with
sufficient precision to distinguish them. We find out that using energy levels
obtained with asymmetric boxes and/or with a moving frame, with reasonable
errors in the energies, one has a successful scheme to get the two
$\Lambda(1405)$ poles.
View original:
http://arxiv.org/abs/1202.4297
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