PoS - Proceedings of Science
Volume 281 - The 26th International Nuclear Physics Conference (INPC2016) - QCD: Hadron Structure and Spectroscopy – Tuesday 13
Spectroscopy With Multi-hadron Interpolators In Lattice QCD
A. Kiratidis*, W. Kamleh, D. Leinweber, Z.W. Liu, F. Stokes and A. Thomas
Full text: pdf
Pre-published on: May 04, 2017
Published on: May 09, 2017
Abstract
The positive-parity nucleon spectrum is studied in 2 + 1 flavour lattice QCD in an attempt to discover novel low-lying energy eigenstates in the region of the Roper resonance. In this work, we employ standard three-quark interpolating fields and introduce new local five-quark meson-baryon operators that hold the possibility of revealing new states that have been missed in previous studies. Motivated by phenomenological arguments, five-quark interpolators based on the $\sigma{N}$, $\pi{N}$ and $a_0{N}$ channels are constructed. Despite the introduction of qualitatively different operators, no novel energy levels are extracted near the regime of the Roper resonance.
DOI: https://doi.org/10.22323/1.281.0269
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.