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Exploring the DGLAP resummation in the JIMWLK Hamiltonian
Journal of High Energy PhysicsWe explore the recently derived equation that resums DGLAP corrections to the JIMWLK Hamiltonian in the simplified setting of the SU(2) gauge theory. We solve the equation numerically for the scattering matrix of a dressed gluon for a particular initial ...
Néstor Armesto +2 more
doaj +2 more sources
Lattice QCD calculation of the pion distribution amplitude with domain wall fermions at physical pion mass [PDF]
Journal of High Energy PhysicsWe present a direct lattice QCD calculation of the x-dependence of the pion distribution amplitude (DA), which is performed using the quasi-DA in large momentum effective theory on a domain-wall fermion ensemble at physical quark masses and spacing a ≈ 0.
Ethan Baker +8 more
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Top quark pair production near threshold: single/double distributions and mass determination [PDF]
Journal of High Energy Physics, 2020 We investigate top quark pair production near the threshold where the pair invariant mass M t t ¯ $$ {M}_{t\overline{t}} $$ approaches 2m t , which provides sensitive observables to extract the top quark mass m t .
Wan-Li Ju +5 more
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Orbital angular momentum at small x [PDF]
Journal of High Energy Physics, 2019 We determine the small Bjorken x asymptotics of the quark and gluon orbital angular momentum (OAM) distributions in the proton in the double-logarithmic approximation (DLA), which resums powers of α s ln2(1/x) with α s the strong coupling constant ...
Yuri V. Kovchegov
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Not all that is β 0 is β-function: the DGLAP resummation and the running coupling in NLO JIMWLK [PDF]
Journal of High Energy Physics, 2023 We reanalyze the origin of the large transverse logarithms associated with the QCD one loop β function coefficient in the NLO JIMWLK Hamiltonian. We show that some of these terms are not associated with the running of the QCD coupling constant but rather
Alex Kovner +3 more
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Classical Gravitational Spinning-Spinless Scattering at O(G^{2}S^{∞}). [PDF]
Physical Review Letters, 2022 Making use of the recently derived, all-spin, opposite-helicity Compton amplitude, we calculate the classical gravitational scattering amplitude for one spinning and one spinless object at O(G^{2}) and all orders in spin.
Rafael Aoude +2 more
semanticscholar +1 more source
Highly Accurate Electronic Structure of Metallic Solids from Coupled-Cluster Theory with Nonperturbative Triple Excitations. [PDF]
Physical Review Letters, 2023 Coupled-cluster theory with single, double, and perturbative triple excitations (CCSD(T))-often considered the "gold standard" of main-group quantum chemistry-is inapplicable to three-dimensional metals due to an infrared divergence, preventing its ...
Verena A. Neufeld, Timothy C. Berkelbach
semanticscholar +1 more source
Scattering angles in Kerr metrics [PDF]
Physical Review D, 2022 Scattering angles for probes in Kerr metrics are derived for scattering in the equatorial plane of the black hole. We use a method that naturally resums all orders in the spin of the Kerr black hole, thus facilitating comparisons with scattering-angle ...
P. Damgaard +3 more
semanticscholar +1 more source