Results 141 to 150 of about 2,180 (221)

The role of strangeness in chiral and U ( 1 ) A restoration. [PDF]

Eur Phys J C Part Fields, 2021
Gómez Nicola A, Ruiz de Elvira J, Vioque-Rodríguez A, Álvarez-Herrero D.   +3 more
europepmc   +1 more source

Complete experiments in pseudoscalar meson photoproduction

, 2015
The problem of extracting photoproduction amplitudes uniquely from so called complete experiments is discussed. This problem can be considered either for the extraction of full production amplitudes, or for the determination of multipoles. Both cases are treated briefly. Preliminary results for the fitting of multipoles, as well as the determination of
openaire   +3 more sources

Leptonic decays of pseudoscalar mesons: a new approach [PDF]

, 2015
Because quarks in hadronic states are subjected to strong QCD forces, It is not straight-forward to apply calculation obtained at the quark level to physical processes involving hadrons because quarks in hadronic states are subjected to strong QCD forces.
Mohd Nazirul Mubin bin Puteh Ahmad
core  

Measurement of polarization observables T, P, and H in π0 and η photoproduction off quasi-free nucleons. [PDF]

Eur Phys J A Hadron Nucl, 2023
Jermann N, Krusche B, Metag V, Afzal F, Badea M, Beck R, Bielefeldt P, Bieling J, Biroth M, Blanke E, Borisov N, Bornstein M, Brinkmann KT, Ciupka S, Crede V, Dolzhikov A, Drexler P, Dutz H, Elsner D, Fedorov A, Frommberger F, Gardner S, Ghosal D, Goertz S, Gorodnov I, Grüner M, Hammann C, Hartmann J, Hillert W, Hoffmeister P, Honisch C, Jude TC, Kalischewski F, Ketzer B, Klassen P, Klein F, Klempt E, Knaust J, Kolanus N, Kreit J, Krönert P, Lang M, Lazarev AB, Livingston K, Lutterer S, Mahlberg P, Meier C, Meyer W, Mitlasoczki B, Müllers J, Nanova M, Neganov A, Nikonov K, Noël JF, Ostrick M, Ottnad J, Otto B, Penman G, Poller T, Proft D, Reicherz G, Reinartz N, Richter L, Runkel S, Salisbury B, Sarantsev AV, Schaab D, Schmidt C, Schmieden H, Schultes J, Seifen T, Spieker K, Stausberg N, Steinacher M, Taubert F, Thiel A, Thoma U, Thomas A, Urban M, Urff G, Usov Y, van Pee H, Wang YC, Wendel C, Wiedner U, Wunderlich Y, CBELSA/TAPS Collaboration.   +86 more
europepmc   +1 more source

Comparison of a pseudoscalar meson form factor in QCD with 3, 4, and 5 colors [PDF]

I show comparisons of the pseudoscalar meson vector form factor from simulations of QCD with $N_c = 3$, 4 and 5 colors and $N_f = 2$ flavors of degenerate mass fermions at a common (matched) fermion mass, lattice spacing, and simulation volume.
DeGrand, Thomas
core  

Measurements of the meson-photon transition form factors of light pseudoscalar mesons at large momentum transfer [PDF]

, 1998
Using the CLEO II detector, we have measured the differential cross sections for exclusive two-photon production of light pseudoscalar mesons π0, η, and η′.
Collaboration, CLEO, Gronberg, J., Bloom, Kenneth A   +2 more
core   +1 more source

Short-distance constraints for the longitudinal component of the hadronic light-by-light amplitude: an update. [PDF]

Eur Phys J C Part Fields, 2021
Colangelo G, Hagelstein F, Hoferichter M, Laub L, Stoffer P.   +4 more
europepmc   +1 more source

The charm-quark contribution to light-by-light scattering in the muon ( g - 2 ) from lattice QCD. [PDF]

Eur Phys J C Part Fields, 2022
Chao EH, Hudspith RJ, Gérardin A, Green JR, Meyer HB.   +4 more
europepmc   +1 more source

Decays of the pseudoscalar glueball into scalar and pseudoscalar mesons [PDF]

Proceedings of Xth Quark Confinement and the Hadron Spectrum — PoS(Confinement X), 2013
Walaa I. Eshraim, Stanislaus Janowski
openaire   +1 more source

Light meson physics at BESIII. [PDF]

Natl Sci Rev, 2021
Fang SS.
europepmc   +1 more source