Meson Spectroscopy from Lattice QCD
Sign Up to like & getrecommendations! Published in 2017 at "Few-Body Systems"
DOI: 10.1007/s00601-017-1278-2
Abstract: Some recent progress in using lattice QCD to perform first-principles calculations of the spectra of mesons is discussed. In particular, I highlight some new results on resonances, near-threshold states and related scattering phenomena—this is a… read more here.
Keywords: meson spectroscopy; lattice qcd; spectroscopy lattice; spectroscopy ... See more keywords
Kaon distribution amplitude from lattice QCD and the flavor SU(3) symmetry
Sign Up to like & getrecommendations! Published in 2019 at "Nuclear Physics B"
DOI: 10.1016/j.nuclphysb.2018.12.020
Abstract: We present the first lattice-QCD calculation of the kaon distribution amplitude using the large-momentum effective theory (LaMET) approach. The momentum-smearing technique has been implemented to improve signals at large meson momenta. We subtract the power… read more here.
Keywords: distribution amplitude; distribution; flavor symmetry; kaon distribution ... See more keywords
Lattice QCD studies on decuplet baryons as meson-baryon bound states in the HAL QCD method
Sign Up to like & getrecommendations! Published in 2022 at "Progress of Theoretical and Experimental Physics"
DOI: 10.1093/ptep/ptad044
Abstract: We study decuplet baryons from meson-baryon interactions in lattice QCD, in particular, Δ and Ω baryons from P-wave I = 3/2 Nπ and I = 0 $\Xi \bar{K}$ interactions, respectively. Interaction potentials are calculated in… read more here.
Keywords: bound states; decuplet baryons; meson baryon; baryons meson ... See more keywords
Proton and neutron electromagnetic form factors from lattice QCD
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DOI: 10.1103/physrevd.100.014509
Abstract: The electromagnetic form factors of the proton and the neutron are computed within lattice QCD using simulations with quarks masses fixed to their physical values. Both connected and disconnected contributions are computed. We analyze two… read more here.
Keywords: proton neutron; lattice qcd; electromagnetic form; form factors ... See more keywords
First direct lattice-QCD calculation of the x -dependence of the pion parton distribution function
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.034505
Abstract: We present the first direct lattice-QCD calculation of the Bjorken-$x$ dependence of the valence quark distribution in the pion. Using large-momentum effective theory (LaMET), we calculate the boosted pion state with long Wilson link operators.… read more here.
Keywords: lattice qcd; direct lattice; qcd calculation; first direct ... See more keywords
Applying complex Langevin simulations to lattice QCD at finite density
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.054512
Abstract: We study the use of the complex-Langevin equation (CLE) to simulate lattice QCD at a finite chemical potential ($\mu$) for quark-number, which has a complex fermion determinant that prevents the use of standard simulation methods… read more here.
Keywords: applying complex; langevin simulations; qcd finite; complex langevin ... See more keywords
Tetraquark interpolating fields in a lattice QCD investigation of the Ds0*(2317) meson
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.034502
Abstract: We investigate the $D_{s0}^\ast(2317)$ meson using lattice QCD and considering correlation functions of several $\bar{c} s$ two-quark and $\bar{c} s (\bar{u} u + \bar{d} d)$ four-quark interpolating fields. These interpolating fields generate different structures in… read more here.
Keywords: interpolating fields; ast 2317; 2317 meson; meson ... See more keywords
Electromagnetic contribution to Σ - Λ mixing using lattice QCD+QED
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.034517
Abstract: Mixing in the $\Sigma^0$-$\Lambda^0$ system is a direct consequence of broken isospin symmetry and is a measure of both isospin-symmetry breaking as well as general SU(3)-flavour symmetry breaking. In this work we present a new… read more here.
Keywords: qcd qed; contribution mixing; electromagnetic contribution; mixing using ... See more keywords
Ratios of the hadronic contributions to the lepton g−2 from lattice QCD+QED simulations
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.054503
Abstract: The ratios among the leading-order (LO) hadronic vacuum polarization (HVP) contributions to the anomalous magnetic moments of electron, muon and tau-lepton, $a_{\ell = e, \mu, \tau}^{ HVP, LO}$, are computed using lattice QCD+QED simulations. The… read more here.
Keywords: qcd qed; qed simulations; hvp; electron muon ... See more keywords
Charmed baryon spectrum from lattice QCD near the physical point
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DOI: 10.1103/physrevd.102.054513
Abstract: We calculate the low-lying spectrum of charmed baryons in lattice QCD on the $32^3\times64$, $N_f=2+1$ PACS-CS gauge configurations at the almost physical pion mass of $\sim 156$ MeV/c$^2$. By employing a set of interpolating operators… read more here.
Keywords: excited states; charmed baryons; charmed baryon; spectrum ... See more keywords
From Ji to Jaffe-Manohar orbital angular momentum in lattice QCD using a direct derivative method
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.074505
Abstract: A Lattice QCD approach to quark orbital angular momentum in the proton based on generalized transverse momentum-dependent parton distributions (GTMDs) is enhanced methodologically by incorporating a direct derivative technique. This improvement removes a significant numerical… read more here.
Keywords: quark orbital; direct derivative; angular momentum; lattice qcd ... See more keywords