Browsing by Author "Zheng, X."

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Evidence for the onset of color transparency in ρ ⁰ electroproduction off nuclei
(2012-06-12)
El Fassi, L.
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Zana, L.
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Hafidi, K.
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Holtrop, M.
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Mustapha, B.
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Brooks, William K.
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Hakobyan, Hayk
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Zheng, X.
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Adhikari, K. P.
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Adikaram, D.
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Aghasyan, M.
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Amaryan, M. J.
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Anghinolfi, M.
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Arrington, J.
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Avakian, H.
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Baghdasaryan, H.
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Battaglieri, M.
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Batourine, V.
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Bedlinskiy, I.
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Biselli, A. S.
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Bookwalter, C.
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Branford, D.
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Briscoe, W. J.
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Bültmann, S.
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Burkert, V. D.
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Carman, D. S.
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Celentano, A.
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Chandavar, S.
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Cole, P. L.
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Contalbrigo, M.
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Crede, V.
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D'Angelo, A.
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Daniel, A.
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Dashyan, N.
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De Vita, R.
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De Sanctis, E.
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Deur, A.
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Dey, B.
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Dickson, R.
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Djalali, C.
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Dodge, G. E.
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Doughty, D.
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Dupre, R.
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Egiyan, H.
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My Ahmed , El Alaoui
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Elouadrhiri, L.
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Eugenio, P.
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Fedotov, G.
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Fegan, S.
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Gabrielyan, M. Y.
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Garçon, M.
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Gevorgyan, N.
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Gilfoyle, G. P.
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Giovanetti, K. L.
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Girod, F. X.
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Goetz, J. T.
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Gohn, W.
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Golovatch, E.
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Gothe, R. W.
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Griffioen, K. A.
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Guidal, M.
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Guo, L.
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Hanretty, C.
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Heddle, D.
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Hicks, K.
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Holt, R. J.
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Hyde, C. E.
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Ilieva, Y.
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Ireland, D. G.
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Ishkhanov, B. S.
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Isupov, E. L.
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Jawalkar, S. S.
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Keller, D.
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Khandaker, M.
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Khetarpal, P.
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Kim, A.
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Kim, W.
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Klein, A.
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Klein, F. J.
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Kubarovsky, V.
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Kuhn, S. E.
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Kuleshov, Sergey
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Kuznetsov, V.
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Laget, J. M.
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Lu, H. Y.
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MacGregor, I. J.D.
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Mao, Y.
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Markov, N.
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Mayer, M.
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McAndrew, J.
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McKinnon, B.
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Meyer, C. A.
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Mineeva, T.
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Mirazita, M.
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Mokeev, V.
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Moreno, B.
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Moutarde, H.
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Munevar, E.
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Nadel-Turonski, P.
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Ni, A.
We have measured the nuclear transparency of the incoherent diffractive A(e, e ρ0) process in 12C and 56Fe targets relative to 2H using a 5 GeV electron beam. The nuclear transparency, the ratio of the produced ρ0’s on a nucleus relative to deuterium, which is sensitive to ρ A interaction, was studied as function of the coherence length (lc ), a lifetime of the hadronic fluctuation of the virtual photon, and the four-momentum transfer squared (Q 2). While the transparency for both 12C and 56Fe showed no lc dependence, a significant Q 2 dependence was measured, which is consistent with calculations that included the color transparency effects.
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Browsing by Author "Zheng, X."

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