Results 151 to 160 of about 62,043 (279)

Learning rotations

open access: yesMathematical Methods in the Applied Sciences, Volume 47, Issue 3, Page 1204-1217, February 2024.
Many problems in computer vision today are solved via deep learning. Tasks like pose estimation from images, pose estimation from point clouds or structure from motion can all be formulated as a regression on rotations. However, there is no unique way of parametrizing rotations mathematically: matrices, quaternions, axis‐angle representation or Euler ...
Alberto Pepe   +2 more
wiley   +1 more source

Relativistic Effects of Mixed Vector-Scalar-Pseudoscalar Potentials for Fermions in 1+1 Dimensions

open access: yes, 2007
The problem of fermions in the presence of a pseudoscalar plus a mixing of vector and scalar potentials which have equal or opposite signs is investigated.
Castro, L. B.   +2 more
core   +1 more source

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

open access: yesEuropean 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   +2 more
doaj   +1 more source

Mixings of a pseudoscalar glueball

open access: yesPhysics 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   +2 more
openaire   +1 more source

Pseudoscalar mesons and instantons [PDF]

open access: yesNuclear 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   +1 more source

Renormalization of the pseudoscalar operator at four loops in QCD

open access: yesJournal 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   +2 more
doaj   +1 more source

Radiative decays of vector and pseudoscalar nonets

open access: yesEPJ 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

Searches for a heavy scalar boson H decaying to a pair of 125 GeV Higgs bosons hh or for a heavy pseudoscalar boson A decaying to Zh, in the final states with h →ττ [PDF]

open access: diamond, 2016
V. Khachatryan   +99 more
openalex   +1 more source

Search for dark matter produced in association with a Higgs boson decaying to a τ lepton pair in proton-proton collisions at $$\sqrt{s}=13$$ TeV

open access: yesJournal of High Energy Physics
A search for dark matter particles produced in association with a Higgs boson decaying into a pair of τ leptons is performed using data collected in proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector.
The CMS collaboration   +2387 more
doaj   +1 more source

Large pseudoscalar Yukawa couplings in the complex 2HDM [PDF]

open access: diamond, 2015
Duarte Fontes   +3 more
openalex   +1 more source

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