Results 21 to 30 of about 72,009 (264)

Stark effect and dissociation of mesons in holographic conductor

open access: yesJournal of High Energy Physics, 2023
We study the meson spectrum of the N $$ \mathcal{N} $$ = 4 supersymmetric Yang-Mills theory with N $$ \mathcal{N} $$ = 2 fundamental hypermultiplets for a finite electric field by using the D3/D7 model.
Shuta Ishigaki   +2 more
doaj   +1 more source

RADIATIVE VECTOR MESON DECAY [PDF]

open access: yesInternational Journal of Modern Physics A, 2005
We study the radiative ρ, ω and ϕ decay into π0π0γ and π0ηγ taking into account mechanisms in which there are two sequential vector-vector-pseudoscalar or axial-vector–vector–pseudoscalar steps followed by the coupling of a vector meson to the photon, considering the final state interaction of the two mesons.
Palomar Burdeus, Juan Esteban   +3 more
openaire   +3 more sources

Quantum Electrodynamics for Vector Mesons [PDF]

open access: yesPhysical Review Letters, 2005
4 pages, 2 figures, REVTeX 4, accepted for publication in ...
Djukanovic, D.   +3 more
openaire   +3 more sources

Light vector mesons [PDF]

open access: yesThe European Physical Journal C, 2009
This article reviews the current status of experimental results obtained in the measurement of light vector mesons produced in proton-proton and heavy ion collisions at different energies. The review is focused on two phenomena related to the light vector mesons; the modification of the spectral shape in search of Chiral symmetry restoration and ...
openaire   +2 more sources

Analysis of the b 1 meson decay in local tensor bilinear representation

open access: yesJournal of High Energy Physics, 2018
We explore the validity of vector meson dominance in the radiative decay of the b 1(1235) meson. In order to explain the violation of the vector meson dominance hypothesis in this decay process, we investigate a model where the b 1 meson strongly couples
Kie Sang Jeong   +2 more
doaj   +1 more source

Vector meson and heavy meson strong interaction [PDF]

open access: yesPhysical Review D, 2009
We calculate the coupling constants between the light vector mesons and heavy mesons within the framework of the light-cone QCD sum rule in the leading order of heavy quark effective theory. The sum rules are very stable with the variations of the Borel parameter and the continuum threshold.
Huang, Peng-Zhi   +2 more
openaire   +2 more sources

QCD phase diagram with a background magnetic field in an improved soft-wall AdS/QCD model

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We studied the magnetic effects on the chiral transition and the melting properties of vector and axial-vector mesons in the improved soft-wall AdS/QCD model under a charged magnetic background, which is solved perturbatively from an Einstein–Maxwell ...
Zhen Fang, Ying-Ying Li, Yue-Liang Wu
doaj   +1 more source

Contribution of higher meson resonances to the electromagnetic $\pi$-meson mass difference [PDF]

open access: yes, 2001
Modifications of the DGMLY relation for calculation of electromagnetic $\pi$-meson mass difference based on the Chiral Symmetry Restoration phenomenon at high energies as well as the Operator Product Expansion of quark densities for vector ($\rho$) and ...
A. A. Andrianov   +33 more
core   +2 more sources

$\eta \to \pi^0 \gamma \gamma$ decay within unitarized chiral perturbation theory [PDF]

open access: yes, 2002
We improve the calculations of the $\eta \to \pi^0 \gamma \gamma$ decay within the context of meson chiral lagrangians. We use a chiral unitary approach for the meson-meson interaction, thus generating the $a_0(980)$ resonance and fixing the longstanding
A. A. Bel’kov   +48 more
core   +3 more sources

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