J/ψ ELASTICITY DISTRIBUTION IN THE VECTOR DOMINANCE APPROACH

1998 ◽  
Vol 13 (35) ◽  
pp. 2873-2885 ◽  
Author(s):  
F. O. DURÃES ◽  
F. S. NAVARRA ◽  
G. WILK
Keyword(s):  
Energy Loss ◽  
Vector Meson ◽  
Vector Meson Dominance ◽  
Vector Dominance

The j/ψ elasticity distribution measured at HERA has recently been understood in terms of QCD models. We suggest that data can also be explained by the vector meson dominance mechanism supplemented by some hadronic description of energy loss, which is assumed to be provided by the Interacting Gluon Model (IGM).

scholarly journals f1(1285) → e+e- decay and direct f1 production in e+e- collisions

2018 ◽  
Vol 182 ◽  
pp. 02106
Author(s):  
A.S. Rudenko
Keyword(s):  
Vector Meson ◽  
Cross Section ◽  
Relative Phase ◽  
Charge Asymmetry ◽  
Coupling Constants ◽  
Vector Meson Dominance ◽  
Dominance Model ◽  
Vector Meson Dominance Model

The width of the f1(1285) → e+e+e- decay is calculated in the vector meson dominance model. The result depends on the relative phase between two coupling constants describing f1 → ρ0γ decay. The width Γ( f1 → e+e+e-) is estimated to be ≃ 0:07 - 0:19 eV. Direct f1 production in e+e+e- collisions is discussed, and the e+e+e- → f1 → a0π → ηππ cross section is calculated. Charge asymmetry in the e+e+e- → ηπ+π- reaction due to interference between e+e+e- → f1 and e+e+e- → ηρ0 amplitudes is studied.

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