COLOR TRANSPARENCY EFFECTS IN ELECTRON DEUTERON INTERACTIONS AT INTERMEDIATE Q(2)

Citation
Ll. Frankfurt et al., COLOR TRANSPARENCY EFFECTS IN ELECTRON DEUTERON INTERACTIONS AT INTERMEDIATE Q(2), ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 352(1), 1995, pp. 97-113
Citations number
50
Categorie Soggetti
Physics, Nuclear","Physics, Particles & Fields
ISSN journal
09397922
Volume
352
Issue
1
Year of publication
1995
Pages
97 - 113
Database
ISI
SICI code
0939-7922(1995)352:1<97:CTEIED>2.0.ZU;2-7
Abstract
High momentum transfer electrodisintegration of polarized and unpolari zed deuterium targets, d(e, e'p)n is studied. We show that the importa nce of final state interactions FSI, occuring when a knocked out nucle on interacts with the other nucleon, depends strongly on the momentum ($) over right arrow p(n) of the spectator nucleon. In particular, the se FSI occur when the essential contributions to the scattering amplit ude arise from internucleon distances similar to 1.5 fm. But the absor ption of the high momentum gamma may produce a point like configurati on, which evolves with time. In this case, the final state interaction s probe the point like configuration at the early stage of its evoluti on. If the point like configuration is still small after propagating a bout 1.5 fm, the FSI are suppressed. The result is that significant co lor transparency effects, which can either enhance or suppress compute d cross sections, are predicted to occur for Q(2) greater than or simi lar to 4 GeV2. We suggest searching for color transparency phenomenon by examining ratios of experimentally measured quantities. Possible th eoretical uncertainties of the calculations, including those due to th e deuteron wave function and relativistic effects, are found to be sma ll.