Parity-expanded variational analysis for non-zero momentum

Abstract

In recent years, the use of variational analysis techniques in lattice QCD has been demonstrated to be successful in the investigation of the rest-mass spectrum of many hadrons. However, due to parity-mixing, more care must be taken for investigations of boosted states to ensure that the projected correlation functions provided by the variational analysis correspond to the same states at zero momentum. In this paper we present the Parity-Expanded Variational Analysis (PEVA) technique, a novel method for ensuring the successful and consistent isolation of boosted baryons through a parity expansion of the operator basis used to construct the correlation matrix.

9 pages, 3 figures, 1 table

References in corpus (9)

• Ab-initio Determination of Light Hadron Masses
• The Flavor Structure of the Excited Baryon Spectra from Lattice QCD
• Light Hadron Masses from Lattice QCD
• Scattering in the pion-nucleon negative parity channel in lattice QCD
• Structure and Flow of the Nucleon Eigenstates in Lattice QCD
• A novel analysis method for excited states in lattice QCD - the nucleon case
• Lattice baryon spectroscopy with multi-particle interpolators
• Low-lying Lambda Baryons from the Lattice
• Expanding the Interpolator Basis in the Variational Method to Explicitly Account for Backward Running States

Cited by in corpus (13)

• Status of Lattice QCD Determination of Nucleon Form Factors and their Relevance for the Few-GeV Neutrino Program
• Light-quark contributions to the magnetic form factor of the Lambda(1405)
• ${\Lambda }_b\to {\Lambda }_c^{\ast }(2595,2625){\ell }^{-}\bar{\nu }$ form factors from lattice QCD
• Elastic Form Factors of Nucleon Excitations in Lattice QCD
• Excited states in nucleon structure calculations
• Opposite-Parity Contaminations in Lattice Nucleon Form Factors
• Accessing high-momentum nucleons with dilute stochastic sources
• Towards high partial waves in lattice QCD with a dumbbell-like operator
• Chiral Analysis of the Nucleon Mass and Sigma Commutator
• Odd-Parity Nucleon Electromagnetic Transitions in Lattice QCD
• Electromagnetic Form Factors of Excited Nucleons via Parity-Expanded Variational Analysis
• Electromagnetic Form Factors of Nucleon Excitations in Lattice QCD
• Understanding the structure of nucleon excitations from their wavefunctions