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Title: Color transparency in incoherent electroproduction of {rho} mesons off nuclei

Color transparency (CT) phenomena in elastic electroproduction of vector mesons off nuclei are usually infected by the onset of coherence length (CL) effects. However, at low energies corresponding to the CLAS experiment at Jefferson Lab (JLab), one can study practically the net CT effects, since CL is much shorter than the nuclear radius. We investigate various manifestations of CT effects using rigorous quantum mechanical approach based on the path integral technique. We include also the effects of {rho} meson decay inside the nucleus leading to a rise of the nuclear suppression towards small values of Q{sup 2}. Motivated by the last CLAS data we predict the A, Q{sup 2} and l{sub c} dependence of nuclear transparency for {rho}{sup 0} mesons produced incoherently off nuclei. We also perform predictions for expected signal of CT corresponding to the planned JLab upgrade to 12 GeV electron beam.
Authors:
 [1] ; ;  [2]
  1. Institute of Experimental Physics SAS, Watsonova 47, 04001 Kosice, Slovakia and Czech Technical University, FNSPE, Brehova 7, 11519 Praque (Czech Republic)
  2. Departamento de Fisica y Centro de Estudios Subatomicos, Universidad Tecnica Federico Santa Maria, Casilla 110-V, Valparaiso (Chile)
Publication Date:
OSTI Identifier:
22116933
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1523; Journal Issue: 1; Conference: DIFFRACTION 2012: International workshop on diffraction in high energy physics, Lanzarote, Canary Islands (Spain), 10-15 Sep 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CEBAF ACCELERATOR; COHERENCE LENGTH; COLOR MODEL; ELECTRON BEAMS; ELECTRON REACTIONS; ELECTRONS; ELECTROPRODUCTION; FOUR MOMENTUM TRANSFER; GEV RANGE; NUCLEAR MATTER; NUCLEI; PARTICLE DECAY; PATH INTEGRALS; QUANTUM MECHANICS; RHO-770 MESONS