scholarly journals VECTOR MESON PRODUCTION AT HERA

2005 ◽  
Vol 20 (02n03) ◽  
pp. 436-444
Author(s):  
◽  
DOROTA SZUBA

The diffractive production of vector mesons ep→eVMY, with VM=ρ0, ω, ϕ, J/ψ, ψ′ or ϒ and with Y being either the scattered proton or a low mass hadronic system, has been extensively investigated at HERA. HERA offers a unique opportunity to study the dependences of diffractive processes on different scales: the mass of the vector meson, mVM, the centre-of-mass energy of the γp system, W, the photon virtuality, Q2 and the four-momentum transfer squared at the proton vertex, |t|. Strong interactions can be investigated in the transition from the hard to the soft regime, where the confinement of quarks and gluons occurs.

2012 ◽  
Vol 57 (12) ◽  
pp. 1197
Author(s):  
R. Fiore ◽  
L.L. Jenkovszky ◽  
A. Lavorini ◽  
V.K. Magas

We show how the familiar phenomenological way of combining the Q2 (photon virtuality) and t (squared momentum transfer) dependences of the scattering amplitude in Deeply Virtual Compton Scattering (DVCS) [1, 2] and Vector Meson Production (VMP) [2] processes can be understood in an off-mass-shell generalization of dual amplitudes with Mandelstam analyticity [3]. By comparingdifferent approaches, we managed also to constrain the numerical values of the free parameters.


2014 ◽  
Vol 90 (5) ◽  
Author(s):  
A. Adare ◽  
C. Aidala ◽  
N. N. Ajitanand ◽  
Y. Akiba ◽  
R. Akimoto ◽  
...  

1995 ◽  
Author(s):  
Paula Bordalo ◽  
N. C. Abreu ◽  
C. Baglin ◽  
A. Baldit ◽  
C. Barrière ◽  
...  

1974 ◽  
Author(s):  
A. Levy ◽  
D. Brick ◽  
M. Hodous ◽  
R. Hulsizer ◽  
V. Kistiakowsky ◽  
...  

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