Zobrazeno 1 - 10
of 495
pro vyhledávání: '"THOMAS, ANTHONY W."'
We refine our previous calculation of multipole amplitude $E_{0+}$ for pion photo-production process, $\gamma N\rightarrow\pi N$. The treatment of final state interactions is based upon an earlier analysis of pion-nucleon scattering within Hamiltonia
Externí odkaz:
http://arxiv.org/abs/2407.05334
Publikováno v:
Phys.Rev.C 110 (2024) 2, 025503
We investigate the neutrino elastic differential cross-section (NDCS) and corresponding mean free path for neutral current scattering in the dense matter of a neutron star. A wide range of observed neutron star (NS) masses is considered, including th
Externí odkaz:
http://arxiv.org/abs/2404.03213
Autor:
Leinweber, Derek B., Abell, Curtis D., Hockley, Liam C., Kamleh, Waseem, Liu, Zhan-Wei, Stokes, Finn M., Thomas, Anthony W., Wu, Jia-Jun
This presentation opens with a brief review of lattice QCD calculations showing the $2s$ radial excitation of the nucleon sits at approximately 2 GeV, well above the Roper resonance position. We then proceed to reconcile this observation with experim
Externí odkaz:
http://arxiv.org/abs/2401.04901
Autor:
Liu, Jiong-Jiong, Liu, Zhan-Wei, Chen, Kan, Guo, Dan, Leinweber, Derek B., Liu, Xiang, Thomas, Anthony W.
Publikováno v:
Phys. Rev. D 109, 054025 (2024)
We examine the internal structure of the $\Lambda(1670)$ through an analysis of lattice QCD simulations and experimental data within Hamiltonian effective field theory. Two scenarios are presented. The first describes the $\Lambda(1670)$ as a bare th
Externí odkaz:
http://arxiv.org/abs/2312.13072
We collect spectra extracted in the $I=\ell=1$ $\pi\pi$ sector provided by various lattice QCD collaborations and study the $m_\pi$ dependence of $\rho$-meson properties using Hamiltonian Effective Field Theory (HEFT). In this unified analysis, the c
Externí odkaz:
http://arxiv.org/abs/2311.03903
Schemes for describing the light quark mass dependence of the nucleon mass calculated in lattice QCD are compared. The three schemes in consideration include a fully relativistic and Lorentz covariant scheme, one that is fully relativistic but not Lo
Externí odkaz:
http://arxiv.org/abs/2310.12564
Observable properties of neutron stars are studied within a hadronic equation of state derived from the quark level. The effect of short-range repulsion is incorporated within the excluded volume framework. It is found that one can sustain neutron st
Externí odkaz:
http://arxiv.org/abs/2308.08987
Recent lattice QCD results for the low-lying odd-parity excitations of the nucleon near the $N^{*}(1535)$ and $N^{*}(1650)$ resonance positions have revealed that the lattice QCD states have magnetic moments consistent with predictions from a constit
Externí odkaz:
http://arxiv.org/abs/2306.00337
Low-lying baryon resonances have been explored using Hamiltonian Effective Field Theory (HEFT), in a formalism where resonances with a three-quark component are described by both two-particle meson-baryon states and a bare basis state. Here, we inves
Externí odkaz:
http://arxiv.org/abs/2305.18790
Recent experimental studies have led to the suggestion that short-range correlations may be a major contributor to the nuclear EMC effect. This hypothesis requires that the structure function for nucleons involved in short-range correlations should b
Externí odkaz:
http://arxiv.org/abs/2305.13666