172 citations · 863 across the 42 of their papers we have counts for
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Physical interpretation of the 2s excitation of the nucleon
Finn M. Stokes, Waseem Kamleh, Derek B. Leinweber +1
Lattice QCD calculations of the radial excitation of the nucleon place the state at an energy of approximately 1.9 GeV, raising the possibility that it is associated with the…
Magnetic polarisability of octet baryons near the physical quark-mass point
Thomas Kabelitz, Waseem Kamleh, Derek Leinweber
The magnetic polarisabilities of octet baryons are calculated close to the physical quark-mass point using the background field method in lattice QCD. This first calculation draws…
Exploring the spectrum in lattice QCD
Liam Hockley, Waseem Kamleh, Derek Leinweber +1
We present an exploratory lattice QCD analysis of the -baryon spectrum. Using smeared three-quark operators in a correlation matrix analysis, we report masses for the ground, f…
Pion photoproduction of nucleon excited states with Hamiltonian effective field theory
Yu Zhuge, Zhan-Wei Liu, Derek B. Leinweber +1
We refine our previous calculation of multipole amplitude for pion photoproduction process, . The treatment of final-state interactions is based upon an e…
Magnetic Polarisability of Octet Baryons via Lattice QCD
Thomas Kabelitz, Ryan Bignell, Waseem Kamleh +1
Drawing on recent advances in lattice-QCD background-field techniques, the magnetic polarisability of octet baryons is calculated from the first principles of QCD. The results are…
Understanding the nature of the resonance
Liam Hockley, Curtis Abell, Derek Leinweber +1
We present a coupled-channel analysis of the -baryon spectrum, based in the framework of Hamiltonian Effective Field Theory (HEFT). We construct a Hamiltonian which…
Understanding the nature of baryon resonances
Derek B. Leinweber, Curtis D. Abell, Liam C. Hockley +5
This presentation opens with a brief review of lattice QCD calculations showing the radial excitation of the nucleon sits at approximately 2 GeV, well above the Roper resonanc…