Observation of a coherence length effect in exclusive rho(0) electroproduction

Authors
Ackerstaff, K Airapetian, A Akopov, N Akushevich, I Amarian, M Aschenauer, EC Avakian, H Avakian, R Avetissian, A Bains, B Barrow, S Baumgarten, C Beckmann, M Belostotski, S Belz, JE Benisch, T Bernreuther, S Bianchi, N Blanchard, S Blouw, J Bottcher, H Borissov, A Brack, J Brauksiepe, S Braun, B Bray, B Brons, S Bruckner, W Brull, A Bruins, EEW Bulten, HJ Cadman, RV Capitani, GP Carter, P Chumney, P Cisbani, E Court, GR Dalpiaz, PF Delheij, PPJ De Sanctis, E De Schepper, D Devitsin, E Huberts, PKAD Di Nezza, P Duren, M Dvoredsky, A Elbakian, G Ely, J Emerson, J Fantoni, A Fechtchenko, A Ferstl, M Fick, D Fiedler, K Filippone, BW Fischer, H Fortune, HT Fox, B Frabetti, S Franz, J Frullani, S Funk, MA Gagunashvili, ND Galumian, P Gao, H Garber, Y Garibaldi, F Gavrilov, G Geiger, P Gharibyan, V Giordjian, V Golendukhin, A Graw, G Grebeniouk, O Green, PW Greeniaus, LG Grosshauser, C Guidal, MG Gute, A Gyurjyan, V Haas, JP Haeberli, W Hansen, JO Hasch, D Hausser, O Heinsius, FH Henderson, RS Henkes, T Henoch, M Hertenberger, R Holler, Y Holt, RJ Hoprich, W Ihssen, H Iodice, M Izotov, A Jackson, HE Jgoun, A Jones, C Kaiser, R Kinney, E Kirsch, M Kisselev, A Kitching, P Kobayashi, H Koch, N Konigsmann, K Kolstein, M Kolster, H Korotkov, V Korsch, W Kozlov, V Kramer, LH Krause, B Krivokhijine, VG Kuckes, M Kummell, F Kyle, G Lachnit, W Lorenzon, W Lung, A Makins, NCR Martens, FK Martin, JW Masoli, F Mateos, A McAndrew, M McIlhany, K McKeown, RD Meissner, F Menden, F Mercer, D Metz, A Meyners, N Mikloukho, O Miller, CA Miller, MA Milner, RG Mitsyn, V Most, A Mozzetti, R Muccifora, V Nagaitsev, A Naryshkin, Y Nathan, AM Neunreither, F Niczyporuk, M Nowak, WD Nupieri, M Oelwein, P Ogami, H O'Neill, TG Openshaw, R Ouyang, J Owen, BR Papavassiliou, V Pate, SF Pitt, M Poolman, HR Potashov, S Potterveld, DH Povh, B Rakness, G Reali, A Redwine, R Reolon, AR Ristinen, R Rith, K Roloff, H Roper, G Rossi, P Rudnitsky, S Ruh, M Ryckbosch, D Sakemi, Y Savin, I Scarlett, C Schmidt, F Schmitt, H Schnell, G Schuler, KP Schwind, A Seibert, J Shibata, TA Shin, T Shutov, V Simani, C Simon, A Sinram, K Slavich, P Sowinski, J Spengos, M Steffens, E Stenger, J Stewart, J Stock, F Stoesslein, U Sutter, M Tallini, H Taroian, S Terkulov, A Thiessen, DM Thomas, E Tipton, B Trudel, A Tytgat, M Urciuoli, GM van Hunen, JJ de Vyver, RV van den Brand, JFJ van der Steenhoven, G Vetterli, MC Vikhrov, V Vincter, M Visser, J Volk, E Wander, W Welch, TP Williamson, SE Wise, T Wolfel, T Woller, K Yoneyama, S Zapfe-Duren, K Zohrabian, H Zurmuhle, R
Citation
K. Ackerstaff et al., Observation of a coherence length effect in exclusive rho(0) electroproduction, PHYS REV L, 82(15), 1999, pp. 3025-3029
Citations number
26
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
82
Issue
15
Year of publication
1999
Pages
3025 - 3029
Database
ISI
SICI code
0031-9007(19990412)82:15<3025:OOACLE>2.0.ZU;2-6
Abstract
Exclusive incoherent electroproduction of the rho(0)(770) meson from H-1, H -2, He-3, and N-14 targets has been studied by the HERMES experiment at squ ared four-momentum transfer Q(2) > 0.4 GeV2 and positron energy loss nu fro m 9 to 20 GeV. The ratio of the N-14 to H-1 cross sections per nucleon, kno wn as the nuclear transparency, was found to decrease with increasing coher ence length of quark-antiquark fluctuations of the virtual photon. The data provide clear evidence of the interaction of the quark-antiquark fluctuati ons with the nuclear medium. [S0031-9007(99)08858-4].