Results 111 to 120 of about 50,138 (237)

Exploring solutions to the muon g-2 anomaly in a 3-3-1 model under flavor constraints

European Physical Journal C: Particles and Fields
The magnetic moment of the muon can receive significant two-loop contributions from a light pseudoscalar. Notably, the spectrum of scalars of 3-3-1 models includes one pseudoscalar.
A. Doff, João Paulo Pinheiro, C. A. de S. Pires   +2 more
doaj   +1 more source

Pseudoscalar Mesons and Emergent Mass

Few-Body Systems
AbstractDespite its role in the continuing evolution of the Universe, only a small fraction of the mass of visible material can be attributed to the Higgs boson alone. The overwhelmingly dominant share may/should arise from the strong interactions that act in the heart of nuclear matter; namely, those described by quantum chromodynamics.
Raya, Khépani, Bashir, Adnan, Binosi, Daniele, Roberts, Craig D., Rodríguez Quintero, José   +4 more
openaire   +3 more sources

Renormalization of the pseudoscalar operator at four loops in QCD

Journal of High Energy Physics
We present the renormalization constant of the pseudoscalar operator defined with a non-anticommuting γ 5 in dimensional regularization up to four-loop order in perturbative Quantum Chromodynamics (QCD).
Long Chen, Michał Czakon, Marco Niggetiedt   +2 more
doaj   +1 more source

Radiative decays of vector and pseudoscalar nonets

EPJ Web of Conferences, 2012
Using a counting scheme which treats the light pseudoscalar and the light vector-meson nonet on equal footing, the decays of the narrow light vector mesons into a pseudoscalar meson and a dilepton and of the η′ meson into an ɷ meson and a dielectron are ...
Lutz M.F.M., Leupold S., Terschlüsen C.
doaj   +1 more source

Mixings of a pseudoscalar glueball

Physics Letters B, 1990
Abstract We investigate η−η′−ι(1440)−η c mixing by introducing a glueball into a previously proposed qq meson mixing scheme. The model predicts various exclusive decay widths in good agreement with current experimental data and requires the ι to be a fairly pure glueball. The mass of the unmixed glueball turns out to be 1.37 GeV.
Genz, Henning, Novakowski, Marek, Woitschitzky, D.   +2 more
openaire   +2 more sources

Pseudoscalar mesons and instantons [PDF]

Nuclear Physics B, 1983
Abstract We discuss the QCD sum rules for the correlators of pseudoscalar currents with quantum numbers of π, K, η, η′ mesons. In the framework of the instanton model of the QCD vacuum suggested earlier by the author, we calculate SU(3) breaking effects such as K, η masses and ηη′ mixing, as well as the U(1) breaking effect, the η′ mass.
openaire   +2 more sources

On the Effects of Excited States of Nucleons upon Static Nuclear Potential in Symmetrical Pseudoscalar Meson Theory, I: Derivation of Nuclear Potential and Qualitative Conclusions [PDF]

, 1953
T. Matsumoto, Tetsuo Hamada, Mitsuru Sugawara   +2 more
openalex   +1 more source

Symmetrical Pseudoscalar Meson Theory of Nuclear Forces [PDF]

, 1952
Joseph V. Lepore
openalex   +1 more source

Pseudoscalar Higgs plus jet production at Next-to-Next-to-Leading Order in QCD

Journal of High Energy Physics
We present a calculation of pseudoscalar Higgs production in association with a jet at Next-to-Next-to Leading Order (NNLO) accuracy in QCD. We work in an effective field theory in which m t → ∞ resulting in effective operators which couple the ...
Youngjin Kim, Ciaran Williams
doaj   +1 more source

Nuclear Forces from Pseudoscalar Meson Theory [PDF]

, 1953
M. Ruderman
openalex   +1 more source