90 citations · 243 across the 9 of their papers we have counts for
9 papers
Lattice evidence that scalar glueballs are small
Ryan Abbott, Daniel C. Hackett, Dimitra A. Pefkou +2
This work reports the first calculation of the gravitational form factors (GFFs) of the scalar glueball, performed via lattice field theory in Yang-Mills theory at a single lattice…
Filtered Rayleigh-Ritz is all you need
Ryan Abbott, Daniel C. Hackett, George T. Fleming +2
Recent work has shown that the (block) Lanczos algorithm can be used to extract approximate energy spectra and matrix elements from (matrices of) correlation functions in quantum f…
Gravitational form factors of glueballs in Yang-Mills theory
Ryan Abbott, Daniel C. Hackett, Dimitra A. Pefkou +2
This work presents preliminary results of the first determination of the energy-momentum tensor form factors of the scalar glueball, referred to as gravitational form factors (GFFs…
Electroweak three-body decays in the presence of two- and three-body bound states
Raul A. Briceño, Andrew Jackura, Dimitra A. Pefkou +1
Recently, formalism has been derived for studying electroweak transition amplitudes for three-body systems both in infinite and finite volumes. The formalism provides exact relatio…
Gravitational form factors of the proton from lattice QCD
Daniel C. Hackett, Dimitra A. Pefkou, Phiala E. Shanahan
The gravitational form factors (GFFs) of a hadron encode fundamental aspects of its structure, including its shape and size as defined from e.g., its energy density. This work pres…
Gravitational form factors of the pion from lattice QCD
Daniel C. Hackett, Patrick R. Oare, Dimitra A. Pefkou +1
The two gravitational form factors of the pion, and , are computed as functions of the momentum transfer squared in the kinematic region $0\leq -t< 2~\text{GeV…
Gluon gravitational structure of hadrons of different spin
Dimitra A. Pefkou, Daniel C. Hackett, Phiala E. Shanahan
The gravitational form factors (GFFs) of hadrons encode the matrix elements of the energy momentum tensor of QCD. These quantities describe how energy, spin, and various mechanical…
Nonperturbatively-renormalized glue momentum fraction at physical pion mass from Lattice QCD
Yi-Bo Yang, Ming Gong, Jian Liang +4
We present the first nonperturbatively-renormalized determination of the glue momentum fraction in the nucleon, based on lattice-QCD simulations at physical p…
Off-forward gluonic structure of vector mesons
W. Detmold, D. Pefkou, P. E. Shanahan
The spin-independent and transversity generalised form factors (GFFs) of the meson are studied using lattice QCD calculations with light quark masses corresponding to a pion ma…