Results 51 to 60 of about 17,379 (194)

Elucidating the ρ-meson’s role as intermediate resonance in the time-like electromagnetic pion form factor [PDF]

EPJ Web of Conferences, 2022
Motivated by the planned measurements of the time-like electromagnetic proton form factors an exploratory study of the time-like electromagnetic pion form factor is presented in a formalism which describes mesons as Poincaré-invariant bound states.
Alkofer Reinhard, Miramontes Ángel S., Sanchis Alepuz Hèlios   +2 more
doaj   +1 more source

Vector meson dominance and polarization

Nuclear Physics B, 1968
Abstract The vector dominance model relates amplitudes for reactions induced by photons (e.g., ifπ-production from nucleons) to amplitudes for reactions induced by vector mesons. In the applications of such relations one conventionally assumes that the vector mesons have to be polarized transversely with respect to the c.m. system.
FRAAS, H, Schildknecht, Dieter
openaire   +2 more sources

Study of the process e+e−→ π+π−π0η at the SND detector [PDF]

EPJ Web of Conferences, 2019
The reaction e+e−→ π+ π−π0η has been studied in the experiment with the SND detector at the VEPP-2000 e+ e− collider. The reaction proceeds via the four intermediate states: ωη, φη, a0ρ, and structureless π+π−π0η state, which may be, for example, ρ(1450)
Botov A.A.
doaj   +1 more source

VECTOR MESON DOMINANCE AND RADIATIVE DECAYS OF HEAVY SPIN-3/2 BARYONS TO HEAVY SPIN-1/2 BARYONS [PDF]

, 2011
Using the calculated values of the strong coupling constants of the heavy sextet spin-3/2 baryons to sextet and antitriplet heavy spin-1/2 baryons with light vector mesons within the light cone QCD sum rules method, and vector meson dominance assumption,
T. Aliev, M. Savci, V. A. P. Department, M. L. I. O. T. Physics, M. Msu, Moscow, Russia.   +6 more
semanticscholar   +1 more source

Exclusive vector mesons at high energies: from photon-proton to proton-proton and nucleus-nucleus collisions

EPJ Web of Conferences, 2012
Photoproduction of vector mesons has been studied since the 1960’s and was instrumental in establishing the hadronic structure of the photon and the concept of vectormeson dominance.
Schäfer Wolfgang
doaj   +1 more source

Excited vector mesons: phenomenology and predictions for a yet unknown vector ss state with a mass of about 1.93 GeV

EPJ Web of Conferences, 2018
The firm understanding of standard quark-antiquark states (including excited states) is necessary to search for non-conventional mesons with the same quantum numbers.
Piotrowska M., Giacosa F.
doaj   +1 more source

Study of the process e+e−→KS0KL0 in the center-of-mass energy range 1004–1060 MeV with the CMD-3 detector at the VEPP-2000 e+e− collider

Physics Letters B, 2016
The e+e−→KS0KL0 cross section has been measured in the center-of-mass energy range 1004–1060 MeV at 25 energy points using 6.1×105 events with KS0→π+π− decay. The analysis is based on 5.9 pb−1 of an integrated luminosity collected with the CMD-3 detector
E.A. Kozyrev, E.P. Solodov, A.N. Amirkhanov, A.V. Anisenkov, V.M. Aulchenko, V.S. Banzarov, N.S. Bashtovoy, D.E. Berkaev, A.E. Bondar, A.V. Bragin, S.I. Eidelman, D.A. Epifanov, L.B. Epshteyn, A.L. Erofeev, G.V. Fedotovich, S.E. Gayazov, A.A. Grebenuk, S.S. Gribanov, D.N. Grigoriev, F.V. Ignatov, V.L. Ivanov, S.V. Karpov, A.S. Kasaev, V.F. Kazanin, A.N. Kirpotin, A.A. Korobov, O.A. Kovalenko, A.N. Kozyrev, I.A. Koop, P.P. Krokovny, A.E. Kuzmenko, A.S. Kuzmin, I.B. Logashenko, P.A. Lukin, K.Yu. Mikhailov, V.S. Okhapkin, A.V. Otboev, Yu.N. Pestov, A.S. Popov, G.P. Razuvaev, A.A. Ruban, N.M. Ryskulov, A.E. Ryzhenenkov, A.I. Senchenko, V.E. Shebalin, D.N. Shemyakin, B.A. Shwartz, D.B. Shwartz, A.L. Sibidanov, P.Yu. Shatunov, Yu.M. Shatunov, V.M. Titov, A.A. Talyshev, A.I. Vorobiov, Yu.V. Yudin   +54 more
doaj   +1 more source

A robust description of hadronic decays in light vector mediator models

Journal of High Energy Physics, 2022
Abelian U(1) gauge group extensions of the Standard Model represent one of the most minimal approaches to solve some of the most urgent particle physics questions and provide a rich phenomenology in various experimental searches.
Ana Luisa Foguel, Peter Reimitz, Renata Zukanovich Funchal   +2 more
doaj   +1 more source

Towards a Measurement of the ωπ Transition Form Factor

EPJ Web of Conferences, 2012
Two sets of experiments have been performed with the WASA detector at COSY. The intention is to compare the quality of the data between the pd→3He ω and pp→pp ω reactions, in the sense of a feasibility and background study for ω → π0e+e− decays.
Khan Farha Anjum
doaj   +1 more source