A measurement of the t dependence of the helicity structure of diffractive rho meson electroproduction at HERA

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Adloff, C (author)

A measurement of the t dependence of the helicity structure of diffractive rho meson electroproduction at HERA

Article/chapterEnglish2002

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2002

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LIBRIS-ID:oai:lup.lub.lu.se:0103274a-957a-4f15-836c-fbb7465d6314
https://lup.lub.lu.se/record/332891URI
https://doi.org/10.1016/S0370-2693(02)02035-XDOI

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Language:English
Summary in:English

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The helicity structure of the diffractive electroproduction of rho mesons, e + p --> e + rho + Y, is studied in a previously unexplored region of large four-momentum transfer squared at the proton vertex, t: 0 < t' < 3 GeV2, where t' = - min. The data used are collected with the HI detector at HERA in the kinematic domain 2.5 < Q(2) < 60 GeV2, 40 < W < 120 GeV No t dependence of the r(00)(04) spin density matrix element is found. A significant t dependent helicity non-conservation from the virtual photon to the rho meson is observed for the spin density matrix element combinations r(00)(5) + 2r(11)(5) and r(00)(1) + 2r(11)(1). These t dependences are consistently described by a perturbative QCD model based on the exchange of two gluons.

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NATURVETENSKAP Fysik Subatomär fysik hsv//swe
NATURAL SCIENCES Physical Sciences Subatomic Physics hsv//eng

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Andreev, V (author)
Andrieu, B (author)
Anthonis, T (author)
Arkadov, V (author)
Astvatsatourov, A (author)
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Bahr, J (author)
Baranov, P (author)
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Bartel, W (author)
Becker, J (author)
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Behnke, O (author)
Beier, C (author)
Belousov, A (author)
Berger, C (author)
Berndt, T (author)
Bizot, JC (author)
Bohme, J (author)
Boudry, V (author)
Braunschweig, W (author)
Brisson, V (author)
Broker, HB (author)
Brown, DP (author)
Bruckner, W (author)
Bruncko, D (author)
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Busser, FW (author)
Bunyatyan, A (author)
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Buschhorn, G (author)
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Cassol-Brunner, F (author)
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Dainton, JB (author)
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Daum, K (author)
Davidsson, MattiasLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)quar-mda (author)
Delcourt, B (author)
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Demirchyan, R (author)
De Roeck, A (author)
De Wolf, EA (author)
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zur Nedden, M (author)
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In:Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics539:1-2, s. 25-390370-2693

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By the author/editor: Adloff, C; Andreev, V; Andrieu, B; Anthonis, T; Arkadov, V; Astvatsatourov, ...; show more...; Babaev, A; Bahr, J; Baranov, P; Barrelet, E; Bartel, W; Becker, J; Beglarian, A; Behnke, O; Beier, C; Belousov, A; Berger, C; Berndt, T; Bizot, JC; Bohme, J; Boudry, V; Braunschweig, W; Brisson, V; Broker, HB; Brown, DP; Bruckner, W; Bruncko, D; Burger, J; Busser, FW; Bunyatyan, A; Burrage, A; Buschhorn, G; Bystritskaya, L; Campbell, AJ; Cao, J; Caron, S; Cassol-Brunner, ...; Clarke, D; Clerbaux, B; Collard, C; Contreras, JG; Coppens, YR; Coughlan, JA; Cousinou, MC; Cox, BE; Cozzika, G; Cvach, J; Dainton, JB; Dau, WD; Daum, K; Davidsson, Matti ...; Delcourt, B; Delerue, N; Demirchyan, R; De Roeck, A; De Wolf, EA; Diaconu, C; Dingfelder, J; Dixon, P; Dodonov, V; Dowell, JD; Droutskoi, A; Dubak, A; Duprel, C; Eckerlin, G; Eckstein, D; Efremenko, V; Egli, S; Eichler, R; Eisele, F; Eisenhandler, E; Ellerbrock, M; Elsen, E; Erdmann, M; Erdmann, W; Faulkner, PJW; Favart, L; Fedotov, A; Felst, R; Ferencei, J; Ferron, S; Fleischer, M; Fleming, YH; Flugge, G; Fomenko, A; Foresti, I; Formanek, J; Franke, G; Gabathuler, E; Gabathuler, K; Garvey, J; Gassner, J; Gayler, J; Gerhards, R; Gerlich, C; Ghazaryan, S; Goerlich, L; Gogitidze, N; Grab, C; Grabski, V; Grassler, H; Greenshaw, T; Grindhammer, G; Hadig, T; Haidt, D; Hajduk, L; Haller, J; Haynes, WJ; Heinemann, B; Heinzelmann, G; Henderson, RCW; Hengstmann, S; Henschel, H; Heremans, R; Herrera, G; Herynek, I; Hildebrandt, M; Hilgers, M; Hiller, KH; Hladky, J; Hoting, P; Hoffmann, D; Horisberger, R; Hovhannisyan, A; Hurling, S; Ibbotson, M; Issever, C; Jacquet, M; Jaffre, M; Janauschek, L; Janssen, X; Jemanov, V; Jönsson, Leif; Johnson, C; Johnson, DP; Jones, MAS; Jung, Hannes; Kant, D; Kapichine, M; Karlsson, Martin; Karschnick, O; Keil, F; Keller, N; Kennedy, J; Kenyon, IR; Kermiche, S; Kiesling, C; Kjellberg, Pär; Klein, A; Kleinwort, C; Kluge, T; Knies, G; Koblitz, B; Kolya, SD; Korbel, V; Kostka, P; Kotelnikov, SK; Koutouev, R; Koutov, A; Krehbiel, H; Kroseberg, J; Kruger, K; Kupper, A; Kuhr, T; Kurca, T; Lamb, D; Landon, MPJ; Lange, W; Lastovicka, T; Laycock, P; Lebailly, E; Lebedev, A; Leissner, B; Lemrani, R; Lendermann, V; Levonian, S; Lindström, Magnu ...; List, B; Lobodzinska, E; Lobodzinski, B; Loginov, A; Loktionova, N; Lubimov, V; Luders, S; Luke, D; Lytkin, L; Mahlke-Kruger, H; Malden, N; Malinovski, E; Malinovski, I; Maracek, R; Marage, P; Marks, J; Marshall, R; Martyn, HU; Martyniak, J; Maxfield, SJ; Meer, D; Mehta, A; Meier, K; Meyer, AB; Meyer, H; Meyer, J; Meyer, PO; Mikocki, S; Milstead, D; Mkrtchyan, T; Mohr, R; Mohrdieck, S; Mondragon, MN; Moreau, F; Morozov, A; Morris, JV; Muller, K; Murin, P; Nagovizin, V; Naroska, B; Naumann, J; Naumann, T; Nellen, G; Newman, PR; Niebergall, F; Niebuhr, C; Nix, O; Nowak, G; Olsson, JE; Ozerov, D; Panassik, V; Pascaud, C; Patel, GD; Peez, M; Perez, E; Phillips, JP; Pitzl, D; Poschl, R; Potachnikova, I; Povh, B; Radel, G; Rauschenberger, ...; Reimer, P; Reisert, B; Reyna, D; Risler, C; Rizvi, E; Robmann, P; Roosen, R; Rostovtsev, A; Rusakov, S; Rybicki, K; Sankey, DPC; Schatzel, S; Scheins, J; Schilling, FP; Schleper, P; Schmidt, D; Schmidt, S; Schmitt, S; Schneider, M; Schoeffel, L; Schoning, A; Schorner, T; Schroder, V; Schultz-Coulon, ...; Schwanenberger, ...; Sedlak, K; Sefkow, F; Shekelyan, V; Sheviakov, I; Shtarkov, LN; Sirois, Y; Sloan, T; Smirnov, P; Soloviev, Y; South, D; Spaskov, V; Specka, A; Spitzer, H; Stamen, R; Stella, B; Stiewe, J; Straumann, U; Swart, M; Tasevsky, M; Tchetchelnitski, ...; Thompson, G; Thompson, PD; Tobien, N; Tomasz, F; Traynor, D; Truol, P; Tsipolitis, G; Tsurin, I; Turnau, J; Turney, JE; Tzamariudaki, E; Udluft, S; Urban, M; Usik, A; Valkar, S; Valkarova, A; Vallee, C; Van Mechelen, P; Vassiliev, S; Vazdik, Y; Vichnevski, A; Vorobiev, M; Wacker, K; Wagner, J; Wallny, R; Waugh, B; Weber, G; Weber, M; Wegener, D; Werner, C; Werner, M; Werner, N; Wessels, M; White, G; Wiesand, S; Wilksen, T; Winde, M; Winter, GG; Wissing, C; Wobisch, M; Woehrling, EE; Wunsch, E; Wyatt, AC; Zacek, J; Zalesak, J; Zhang, Z; Zhokin, A; Zomer, F; zur Nedden, M; show less...

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