scholarly journals Diffractive light vector meson production at large momentum transfers

1996 ◽  
Vol 53 (7) ◽  
pp. 3564-3572 ◽  
Author(s):  
D. Yu. Ivanov
Keyword(s):  
Vector Meson ◽  
Meson Production ◽  
Large Momentum ◽  
Vector Meson Production ◽  
Light Vector Meson ◽  
Light Vector

DIELECTRON SPECTROSCOPY IN COLD NUCLEAR MATTER

2011 ◽  
Vol 26 (03n04) ◽  
pp. 737-740 ◽  
Author(s):  
◽  
MICHAEL WEBER
Keyword(s):  
Vector Meson ◽  
Nuclear Matter ◽  
Invariant Mass ◽  
Meson Production ◽  
Yield Ratio ◽  
Vector Meson Production ◽  
Production Threshold ◽  
Light Vector Meson ◽  
Mass Distributions ◽  
Light Vector

We report recent data on e + e - pair emission in proton nucleus collisions at energies slightly above the light vector meson production threshold. Invariant mass distributions for the p + Nb system at Ekin = 3.5 GeV/c2 show a clear ρ/ω signal and are compared to data from elementary p + p reactions. We observe a constant π0/ω yield ratio for both systems.

scholarly journals Light vector meson production in pp collisions at s=7 TeV

2012 ◽  
Vol 710 (4-5) ◽  
pp. 557-568 ◽  
Author(s):  
B. Abelev ◽  
A. Abrahantes Quintana ◽  
D. Adamová ◽  
A.M. Adare ◽  
M.M. Aggarwal ◽  
...  
Keyword(s):  
Vector Meson ◽  
Meson Production ◽  
Pp Collisions ◽  
Vector Meson Production ◽  
Light Vector Meson ◽  
Light Vector

scholarly journals TESTING THE DYNAMICS OF HIGH ENERGY SCATTERING USING VECTOR MESON PRODUCTION

2004 ◽  
Vol 19 (36) ◽  
pp. 2655-2671 ◽  
Author(s):  
RIKARD ENBERG
Keyword(s):  
Vector Meson ◽  
Meson Production ◽  
High Energy ◽  
Large Momentum ◽  
Energy Limit ◽  
Vector Meson Production ◽  
Proton Collisions ◽  
Energy Scattering ◽  
Rapidity Gap ◽  
High Energy Scattering

I review work on diffractive vector meson production in photon–proton collisions at high energy and large momentum transfer, accompanied by proton dissociation and a large rapidity gap. This process provides a test of the high energy scattering dynamics, but is also sensitive to the details of the treatment of the vector meson vertex.The emphasis is on the description of the process by a solution of the non-forward BFKL equation, i.e. the equation describing the evolution of scattering amplitudes in the high-energy limit of QCD. The formation of the vector meson and the nonperturbative modeling needed is also briefly discussed.

scholarly journals Diffractive vector meson production with a large momentum transfer

2004 ◽  
Vol 33 (S1) ◽  
pp. s512-s514
Author(s):  
Rikard Enberg ◽  
Jeff Forshaw ◽  
Leszek Motyka ◽  
Gavin Poludniowski
Keyword(s):  
Vector Meson ◽  
Momentum Transfer ◽  
Meson Production ◽  
Large Momentum Transfer ◽  
Large Momentum ◽  
Vector Meson Production

scholarly journals Vector-meson production and vector meson dominance

2021 ◽  
Vol 81 (10) ◽  
Author(s):  
Y.-Z. Xu ◽  
S.-Y. Chen ◽  
Z.-Q. Yao ◽  
D. Binosi ◽  
Z.-F. Cui ◽  
...  
Keyword(s):  
Vector Meson ◽  
Meson Production ◽  
Bound State ◽  
Vector Meson Dominance ◽  
Transition Strength ◽  
Momentum Dependence ◽  
Vector Mesons ◽  
Vector Meson Production ◽  
Proton Mass ◽  
Light Vector

AbstractWe consider the fidelity of the vector meson dominance (VMD) assumption as an instrument for relating the electromagnetic vector-meson production reaction $$e + p \rightarrow e^\prime + V + p$$ e + p → e ′ + V + p to the purely hadronic process $$V + p \rightarrow V+p$$ V + p → V + p . Analyses of the photon vacuum polarisation and the photon-quark vertex reveal that such a VMD Ansatz might be reasonable for light vector-mesons. However, when the vector-mesons are described by momentum-dependent bound-state amplitudes, VMD fails for heavy vector-mesons: it cannot be used reliably to estimate either a photon-to-vector-meson transition strength or the momentum dependence of those integrands that would arise in calculations of the different reaction amplitudes. Consequently, for processes involving heavy mesons, the veracity of both cross-section estimates and conclusions based on the VMD assumption should be reviewed, e.g., those relating to hidden-charm pentaquark production and the origin of the proton mass.

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