scholarly journals Understanding the radiative decays of vector charmonia to light pseudoscalar mesons

2011 ◽  
Vol 697 (1) ◽  
pp. 52-57 ◽  
Author(s):  
Qiang Zhao
Keyword(s):  
Radiative Decays ◽  
Pseudoscalar Mesons

Vector–vector–pseudoscalar couplings, radiative decays, and possible existence of ψ-like pseudoscalar mesons

1976 ◽  
Vol 54 (8) ◽  
pp. 830-835 ◽  
Author(s):  
J. G. Cordes ◽  
D. Kiang ◽  
S. Y. Tsai
Keyword(s):  
Phenomenological Analysis ◽  
Radiative Decays ◽  
Dominance Model ◽  
Vector Dominance ◽  
Pseudoscalar Mesons ◽  
Color Scheme

Possible interactions of the ψ particles are analyzed with emphasis on vector–vector–pseudoscalar couplings. Radiative decays are studied in some detail in the context of the vector dominance model. The possibility that there might exist ψ-like pseudoscalar mesons which couple strongly to the ψ's is examined. The relevance of our phenomenological analysis to the charm and color scheme interpretations of the new particle is discussed.

scholarly journals Study of two-photon decays of pseudoscalar mesons via J/ψ radiative decays

2018 ◽  
Vol 97 (7) ◽  
Author(s):  
M. Ablikim ◽  
M. N. Achasov ◽  
S. Ahmed ◽  
M. Albrecht ◽  
A. Amoroso ◽  
...  
Keyword(s):  
Radiative Decays ◽  
Two Photon ◽  
Pseudoscalar Mesons

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

2018 ◽  
Vol 182 ◽  
pp. 02097
Author(s):  
M. Piotrowska ◽  
F. Giacosa
Keyword(s):  
Vector Meson ◽  
Relativistic Quantum ◽  
Radiative Decays ◽  
Vector Meson Dominance ◽  
Vector Mesons ◽  
Quantum Numbers ◽  
Pseudoscalar Mesons ◽  
Unknown Vector ◽  
Field Theoretical Model ◽  
Open Issues

The firm understanding of standard quark-antiquark states (including excited states) is necessary to search for non-conventional mesons with the same quantum numbers. In this work, we study the phenomenology of two nonets of excited vector mesons, which predominantly correspond to radially excited vector mesons with quantum numbers n2S+1LJ = 23S1 and to orbitally excited vector mesons with quantum numbers n2S+1LJ = 13D1. We evaluate the decays of these mesons into two pseudoscalar mesons and into a pseudoscalar and a ground-state vector meson by making use of a relativistic quantum field theoretical model based on flavor symmetry. Moreover, we also study the radiative decays into a photon and a pseudoscalar meson by using vector meson dominance. We compare our results to the PDG and comment on open issues concerning the corresponding measured resonances. Within our approach, we are also able to make predictions for a not-yet discovered ss state in the n2S+1LJ = 13D1 nonet, which has a mass of about 1.93 GeV. This resonance can be searched in the upcoming GlueX and CLAS12 experiments which take place at the Jefferson Lab.

Quarkonia-Glueball Structure of the Ground Pseudoscalar Mesons

2003 ◽  
Vol 18 (19) ◽  
pp. 3335-3346 ◽  
Author(s):  
De-Min Li ◽  
Bing Ma ◽  
Hong Yu
Keyword(s):  
Symmetry Breaking ◽  
Pseudoscalar Meson ◽  
Scalar Meson ◽  
Radiative Decays ◽  
Flavor Symmetry ◽  
Average Data ◽  
Two Photon ◽  
Pseudoscalar Mesons ◽  
Pseudo Scalar ◽  
Glueball State

Considering corrections due to SU(3) flavor symmetry breaking, non-ideal ω - ϕ mixing, double OZI and electromagnetic amplitudes of J/ψ decays into a vector and a pseudo-scalar meson, and three-gluon-annihilation amplitudes of radiative decays of J/ψ into a pseudoscalar meson, we investigate two-photon decays of pseudoscalar mesons, radiative decays between pseudoscalar and vector mesons, decays of J/ψ into a vector and a pseudoscalar meson, and radiative decays of J/ψ into a pseudoscalar meson. The quarkonia-glueball structure of η, η′ and η(1440) is phenomenologically deduced from the fit to the updated world average data concerning the above mentioned decays. We find that η (η′) contains about 48.7%, 47.6%, 3.7% (32.9%, 48.8%, 18.3%) non-strange quarkonium, strange quarkonium and glueball components, respectively, and that η(1410) is mainly a glueball state (about 78% glueball component), mixed with 18.5% non-strange quarkonium and 3.5% strange quarkonium. We predict that Br (J/ψ→γη) : Br (J/ψ→γη′) : Br (J/ψ→γη(1410)) = 1.0:5.2:8.0, which can be tested at BEPC/BES with 50 million J/ψ events.

scholarly journals Mixing of pseudoscalar mesons and M1 radiative decays

1977 ◽  
Vol 66 (4) ◽  
pp. 365-369 ◽  
Author(s):  
H. Fritzsch ◽  
J.D. Jackson
Keyword(s):  
Radiative Decays ◽  
Pseudoscalar Mesons

RADIATIVE DECAYS OF EQUAL MASS VECTOR MESONS IN A BETHE–SALPETER EQUATION FRAMEWORK

2012 ◽  
Vol 21 (10) ◽  
pp. 1250084 ◽  
Author(s):  
ELIAS MENGESHA ◽  
SHASHANK BHATNAGAR
Keyword(s):  
Form Factors ◽  
Equal Mass ◽  
Radiative Decays ◽  
Vector Mesons ◽  
Quark Loop ◽  
Factors Associated ◽  
Pseudoscalar Mesons ◽  
Light Vector ◽  
Decay Widths ◽  
Radiative Meson Decays

In this work, we have employed Bethe–Salpeter equation (BSE) under Covariant Instantaneous Ansatz (CIA) to study radiative decays of light vector mesons through the process: h→h'γ, taking h and h' as equal mass light vector and pseudoscalar mesons, respectively. The decay widths calculated for these processes are in reasonable agreement with data. The motivation for this work was our intention to resolve the problems involved in calculations of triangle quark-loop diagrams which appear in processes such as radiative meson decays, meson form factors, strong decays of mesons, etc., in BSE under CIA, which give rise to complexities in amplitudes (as pointed out earlier in Ref. 1) due to the presence of the time-like momentum components in Gaussian factors associated with the vertex functions of the participating hadrons. In this work we try to highlight this problem and then demonstrate a mathematical procedure which might lead to calculations of such processes in BSE under CIA.

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