Results 111 to 120 of about 13,280 (208)

Moments of axial-vector GPD from lattice QCD: quark helicity, orbital angular momentum, and spin-orbit correlation

Journal of High Energy Physics
In this work, we present a lattice QCD calculation of the Mellin moments of the twist-2 axial-vector generalized parton distribution (GPD), H ~ x ξ t $$ \overset{\sim }{H}\left(x,\xi, t\right) $$ , at zero skewness, ξ, with multiple values of the ...
Shohini Bhattacharya, Krzysztof Cichy, Martha Constantinou, Xiang Gao, Andreas Metz, Joshua Miller, Swagato Mukherjee, Peter Petreczky, Fernanda Steffens, Yong Zhao   +9 more
doaj   +1 more source

Gaussian processes for inferring parton distributions

Journal of High Energy Physics
The extraction of parton distribution functions (PDFs) from experimental or lattice QCD data is an ill-posed inverse problem, where regularization strongly impacts both systematic uncertainties and the reliability of the results.
Yamil Cahuana Medrano, Hervé Dutrieux, Joseph Karpie, Kostas Orginos, Savvas Zafeiropoulos, on behalf of the HadStruc Collaboration   +5 more
doaj   +1 more source

Two-photon exchange in (muonic) deuterium at N3LO in pionless effective field theory. [PDF]

Eur Phys J A Hadron Nucl, 2022
Lensky V, Hagelstein F, Pascalutsa V.
europepmc   +1 more source

Energy momentum tensor on and off the light cone: exposition with scalar Yukawa theory

Journal of High Energy Physics
We compute the gravitational form factors A i , D i and c ¯ i $$ {\overline{c}}_i $$ of the scalar Yukawa theory using both the light-cone and covariant perturbation theory at the one-loop level.
Xianghui Cao, Siqi Xu, Yang Li, Guangyao Chen, Xingbo Zhao, V. A. Karmanov, J. P. Vary   +6 more
doaj   +1 more source

Cosmic ray feedback in galaxies and galaxy clusters: A pedagogical introduction and a topical review of the acceleration, transport, observables, and dynamical impact of cosmic rays. [PDF]

Astron Astrophys Rev, 2023
Ruszkowski M, Pfrommer C.
europepmc   +1 more source

Finite volume Hamiltonian method for two-particle systems containing long-range potential on the lattice

Journal of High Energy Physics
We propose a systematic method to block-diagonalize the finite volume effective Hamiltonian for two-particle systems with arbitrary spin in both the rest and moving frame.
Kang Yu, Guang-Juan Wang, Jia-Jun Wu, Zhi Yang   +3 more
doaj   +1 more source

Spectral parameters of the ρ resonance from lattice QCD

Journal of High Energy Physics
We present a lattice QCD investigation of the ρ resonance using nine N f = 2 + 1 Wilson-Clover ensembles with three lattice spacings and various pion masses ranging from 135 to 320 MeV. For each ensemble, a large number of finite volume energy levels are
The CLQCD collaboration, Zhengli Wang, Derek B. Leinweber, Chuan Liu, Liuming Liu, Peng Sun, Anthony W. Thomas, Jia-jun Wu, Hanyang Xing, Kang Yu   +9 more
doaj   +1 more source

D 1 and D 2 resonances in coupled-channel scattering amplitudes from lattice QCD

Journal of High Energy Physics
Isospin-1/2 charmed axial-vector D ∗ π − D ∗ η − D s ∗ K ¯ $$ {D}_s^{\ast}\overline{K} $$ scattering amplitudes are computed, along with interactions in several other I = 1/2 J P channels. Using lattice QCD, we work at a light-quark mass corresponding to
Nicolas Lang, David J. Wilson, for the Hadron Spectrum collaboration   +2 more
doaj   +1 more source

The COMPASS Hadron Spectroscopy Programme

Fizika B : a journal of experimental and theoretical physics, 2011
3rd International Conference on Nuclear and Particle Physics with CEBAF at Jefferson Lab, October 3-8, 2010, Dubrovnik ...
openaire   +3 more sources

DK/Dπ scattering and an exotic virtual bound state at the SU(3) flavour symmetric point from lattice QCD

Journal of High Energy Physics
Elastic S-wave scattering of a charm meson with a light pseudoscalar meson in J P = 0+ is investigated in the flavour 3 ¯ $$ \overline{\textbf{3}} $$ , 6 and 15 ¯ $$ \overline{\textbf{15}} $$ sectors at the SU(3) f flavour point using lattice QCD ...
J. Daniel E. Yeo, Christopher E. Thomas, David J. Wilson, for the Hadron Spectrum collaboration   +3 more
doaj   +1 more source