Q2 dependence of nuclear transparency for exclusive ρ0 production

A. Airapetian, N. Akopov, Z. Akopov, M. Amarian, V. V. Ammosov, A. Andrus, E. C. Aschenauer, W. Augustyniak, R. Avakian, A. Avetissian, E. Avetissian, P. Bailey, V. Baturin, C. Baumgarten, M. Beckmann, S. Belostotski, S. Bernreuther, N. Bianchi, H. P. Blok, H. BöttcherA. Borissov, M. Bouwhuis, J. Brack, A. Brüil, I. Brunn, G. P. Capitani, H. C. Chiang, G. Ciullo, M. Contalbrigo, G. R. Court, P. F. Dalpiaz, R. de Leo, L. de Nardo, E. de Sanctis, E. Devitsin, P. di Nezza, M. Düren, M. Ehrenfried, A. Elalaoui-Moulay, G. Elbakian, F. Ellinghaus, U. Elschenbroich, J. Ely, R. Fabbri, A. Fantoni, A. Fechtchenko, L. Felawka, B. Fox, J. Franz, S. Frullani, Y. Gärber, G. Gapienko, V. Gapienko, F. Garibaldi, E. Garutti, D. Gaskell, G. Gavrilov, V. Gharibyan, G. Graw, O. Grebeniouk, L. G. Greeniaus, W. Haeberli, K. Hafidi, M. Hartig, D. Hasch, D. Heesbeen, M. Henoch, R. Hertenberger, W. H.A. Hesselink, A. Hillenbrand, Y. Holler, B. Hommez, G. Iarygin, A. Izotov, H. E. Jackson, A. Jgoun, R. Kaiser, E. Kinney, A. Kisselev, K. Königsmann, H. Kolster, M. Kopytin, V. Korotkov, V. Kozlov, B. Krauss, V. G. Krivokhijine, L. Lagamba, L. Lapikás, A. Laziev, P. Lenisa, P. Liebing, T. Lindemann, W. Lorenzon, N. C.R. Makins, H. Marukyan, F. Masoli, F. Menden, V. Mexner, N. Meyners, O. Mikloukho, C. A. Miller, Y. Miyachi, V. Muccifora, A. Nagaitsev, E. Nappi, Y. Naryshkin, A. Nass, K. Negodaeva, W. D. Nowak, K. Oganessyan, H. Ohsuga, G. Orlandi, S. Podiatchev, S. Potashov, D. H. Potterveld, M. Raithel, D. Reggiani, P. Reimer, A. Reischl, A. R. Reolon, K. Rith, G. Rosner, A. Rostomyan, D. Ryckbosch, I. Sanjiev, I. Savin, C. Scarlett, A. Schäfer, C. Schill, G. Schnell, K. P. Schüler, A. Schwind, J. Seibert, B. Seitz, R. Shanidze, T. A. Shibata, V. Shutov, M. C. Simani, K. Sinram, M. Stancari, M. Statera, E. Steffens, J. J.M. Steijger, J. Stewart, U. Stösslein, H. Tanaka, S. Taroian, B. Tchuiko, A. Terkulov, S. Tessarin, E. Thomas, A. Tkabladze, A. Trzcinski, M. Tytgat, G. M. Urciuoli, P. van der Nat, G. van der Steenhoven, R. van de Vyver, M. C. Vetterli, V. Vikhrov, M. G. Vincter, J. Visser, M. Vogt, J. Volmer, C. Weiskopf, J. Wendland, J. Wilbert, T. Wise, S. Yen, S. Yoneyama, B. Zihlmann, H. Zohrabian, P. Zupranski

Research output: Contribution to journalArticlepeer-review

Abstract

The transparency of the 14N nucleus to exclusive coherent and incoherent ρ0 electroproduction was measured by the HERMES collaboration as a function of both Q2 and the coherence length of qq̄ fluctuations of the virtual photon. Thus, positive slopes of the Q2 dependence of the nuclear transparency were observed on nitrogen for lc=1.3-2.5 fm and Q2=0.9-4 GeV2 for exclusive coherent and incoherent ρ0 production. Such a result not only adds further evidence for the existence of the color transparency phenomenon, but it also elucidates the complex interplay of various effects on the production of exclusive ρ0 mesons at modestly high energies.

Original languageEnglish (US)
Article number052501
Pages (from-to)052501/1-052501/6
JournalPhysical review letters
Volume90
Issue number5
StatePublished - Feb 7 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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