Results 11 to 20 of about 27,535 (267)

The role of meson exchanges in light-by-light scattering

open access: yesPhysics Letters B, 2017
We discuss the role of meson exchange mechanisms in γγ→γγ scattering. Several pseudoscalar (π0, η, η′(958), ηc(1S), ηc(2S)), scalar (f0(500), f0(980), a0(980), f0(1370), χc0(1P)) and tensor (f2(1270), a2(1320), f2′(1525), f2(1565), a2(1700)) mesons are ...
Piotr Lebiedowicz, Antoni Szczurek
doaj   +4 more sources

Model discrimination in pseudoscalar-meson photoproduction [PDF]

open access: yesPhysics Letters B, 2016
To learn about a physical system of interest, experimental results must be able to discriminate among models. We introduce a geometrical measure to quantify the distance between models for pseudoscalar-meson photoproduction in amplitude space ...
J. Nys   +3 more
doaj   +5 more sources

Pseudoscalars and the η′ in the holographic soft-wall model [PDF]

open access: yesEPJ Web of Conferences, 2022
Pseudoscalar mesons and glueballs are studied in a model based on the AdS/QCD correspondence. Glueball masses are obtained in the pure-gauge case, while the mixing between pseudoscalar glueballs and singlet pseudoscalar mesons produces the expected mass ...
Giannuzzi Floriana, Nicotri Stefano
doaj   +1 more source

Photoproduction of pseudoscalar mesons [PDF]

open access: yesNuclear Physics A, 2003
4 pages, 4 figures, Proceedings of Particles and Nuclei, PANIC2002, Osaka, Japan, Sept.30-Oct.4 ...
R. A. Arndt   +4 more
openaire   +4 more sources

ON THE COMPLEXION OF PSEUDOSCALAR MESONS [PDF]

open access: yesInternational Journal of Modern Physics A, 2005
A strongly momentum-dependent dressed-quark mass function is basic to QCD. It is central to the appearance of a constituent-quark mass-scale and an existential prerequisite for Goldstone modes. Dyson-Schwinger equation (DSEs) studies have long emphasised this importance, and have proved that QCD's Goldstone modes are the only pseudoscalar mesons to ...
S. V. Wright   +4 more
openaire   +4 more sources

Mixing of Pseudoscalar Mesons [PDF]

open access: yesPhysica Scripta, 2002
21 pages, 6 figures, Proc.
Th. Feldmann, P. Kroll
openaire   +3 more sources

Poincaré-covariant quark model of electroweak light mesons decays [PDF]

open access: yesEPJ Web of Conferences, 2019
The procedure for obtaining the radiative decay constants of pseudoscalar and vector unflavored mesons in point–form of Poincaré-invariant quantum mechanics is presented.
Andreev Viktor, Haurysh Vadzim
doaj   +1 more source

Determining dominant partial waves in photoproduction via moment analysis [PDF]

open access: yesEPJ Web of Conferences, 2020
Important insights into the excitation spectra of baryons are provided by measurements of polarization observables in reactions that involve particles with spin.
Wunderlich Yannick
doaj   +1 more source

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