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.

scholarly journals FEASIBILITY OF EXTRACTING Vtd FROM RADIATIVE B(Bs) DECAYS

1996 ◽  
Vol 11 (20) ◽  
pp. 3743-3759 ◽  
Author(s):  
D. ATWOOD ◽  
B. BLOK ◽  
A. SONI
Keyword(s):  
Vector Meson ◽  
Short Distance ◽  
Experimental Information ◽  
Radiative Decays ◽  
Vector Meson Dominance ◽  
Long Distance

We use experimental information on D−→K*0ρ− and B→ψ+K*, coupled with flavor independence of QCD, and with vector meson dominance, to show that long distance (LD) contributions to B→ρ+γ, especially to B−→ρ−+γ, are potentially very serious. Estimates based on the annihilation graph are shown to lead to similar conclusions. We emphasize that LD contributions can be appreciably different in B−→ρ−+γ and B0→ρ0(ω)+γ. All radiative decays of B, Bs are shown to be governed essentially by two LD and two short distance (SD) hadronic entities. Despite the presence of considerable LD contributions, we show how separate measurements of B−→ρ−+γ, B0→ρ0(ω)+γ, along with B→K*+γ, can be used for a systematic extraction of Vtd. Measurements of Bs→ɸ+γ and K*0+γ could also provide very useful consistency checks.

scholarly journals The Reaction e+ e- ?h'(X°)g and the New Vector Mesons

1976 ◽  
Vol 29 (5) ◽  
pp. 347
Author(s):  
T Chandramohan ◽  
P Achuthan
Keyword(s):  
Symmetry Breaking ◽  
Vector Meson ◽  
Cross Sections ◽  
Numerical Results ◽  
Vector Meson Dominance ◽  
Vector Mesons ◽  
Total Cross Sections ◽  
Electron Positron ◽  
Breaking Parameter ◽  
Positron Collisions

The generalized vector meson dominance theory of Sakurai is used to study the production of 1'1' mesons in electron-positron collisions. The differential and total cross sections are calculated, especially taking into account contributions from the new vector mesons p'(l250) and p"(l600). The influence of an SU(3) symmetry-breaking parameter f3 on the numerical results is also investigated

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