Results 11 to 20 of about 382 (185)

Measurement of branching fractions for D meson decaying into ϕ meson and a pseudoscalar meson

open access: yesPhysics Letters B, 2019
The four decay modes D0→ϕπ0, D0→ϕη, D+→ϕπ+, and D+→ϕK+ are studied by using a data sample taken at the centre-of-mass energy s=3.773 GeV with the BESIII detector, corresponding to an integrated luminosity of 2.93 fb−1.
M. Ablikim   +487 more
doaj   +11 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 ...
Arndt, R. A.   +4 more
openaire   +2 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 ...
Hoell, A.   +3 more
openaire   +2 more sources

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

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

PSEUDOSCALAR MESON ELECTROPRODUCTION AND TRANSVERSITY [PDF]

open access: yesExclusive Reactions at High Momentum Transfer IV, 2011
Exclusive meson leptoproduction from nucleons in the deeply virtual exchanged boson limit can be described by generalized parton distributions (GPDs). Including spin dependence in the description requires 8 independent quark-parton and gluon-parton functions.
Goldstein, Gary R., Liuti, Simonetta
openaire   +2 more sources

Search for dark photons in heavy‐ion collisions

open access: yesAstronomische Nachrichten, Volume 344, Issue 1-2, January-February 2023., 2023
Abstract The vector U‐bosons, or so‐called “dark photons,” are one of the possible candidates for the dark matter mediators. They are supposed to interact with the standard matter via a “vector portal” due to the U(1)−U(1)′$$ U(1)-U{(1)}^{\prime } $$ symmetry group mixing which might make them visible in particle and heavy‐ion experiments.
Elena Bratkovskaya   +3 more
wiley   +1 more source

Contributions of K0∗1430 and K0∗1950 in the Charmed Three‐Body B Meson Decays

open access: yesAdvances in High Energy Physics, Volume 2023, Issue 1, 2023., 2023
In this work, we investigate the resonant contributions of K0∗1430 and K0∗1950 in the three‐body B(s)⟶D(s)Kπ within the perturbative QCD approach. The form factor Fkπ(s) is adopted to describe the nonperturbative dynamics of the S‐wave Kπ system. The branching ratios of all concerned decays are calculated and predicted to be in the order of 10−10 to 10−
Bo-Yan Cui   +2 more
wiley   +1 more source

Two and three pseudoscalar production in e + e − annihilation and their contributions to (g − 2) μ

open access: yesJournal of High Energy Physics, 2021
A coherent study of e + e − annihilation into two (π + π − , K + K − ) and three (π + π − π 0 , π + π − η) pseudoscalar meson production is carried out within the framework of resonance chiral theory in energy region E ≲ 2 GeV. The work of [L.Y.
Wen Qin, Ling-Yun Dai, Jorge Portolés
doaj   +1 more source

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