PoS - Proceedings of Science
Volume 396 - The 38th International Symposium on Lattice Field Theory (LATTICE2021) - Oral presentation
Progress on Meson-Baryon Scattering
C. Morningstar*, J. Bulava, A. Hanlon, B. Hörz, D. Mohler, A. Nicholson, S. Skinner and A. Walker-Loud
Full text: pdf
Pre-published on: May 16, 2022
Published on:
Progress in computing various meson-baryon scattering amplitudes is presented
on a single ensemble from the Coordinated Lattice Simulations (CLS) consortium with
$m_\pi=200$ MeV and $N_f=2+1$ dynamical fermions. The finite-volume Luscher approach
is employed to determine the lowest few partial waves from ground- and excited-state
energies computed from correlation matrices rotated in a single pivot using a generalized
eigenvector solution. This analysis requires evaluating matrices of correlation functions
between single- and two-hadron interpolating operators which are projected onto definite
spatial momenta and finite-volume irreducible representations. The stochastic LapH method
is used to estimate all needed quark propagators. Preliminary
results are presented for $I=\frac{1}{2}, \frac{3}{2}$ $N\pi$ amplitudes including the
$\Delta(1232)$ resonance and the $I=0$ $S$-wave amplitude with unit strangeness
relevant for the $\Lambda(1405)$.
DOI: https://doi.org/10.22323/1.396.0170
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.