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

Adloff, C; Andreev, V; Andrieu, B; Anthonis, T; Arkadov, V; Astvatsatourov, A; Babaev, A; Bahr, J; Baranov, P and Barrelet, E, et al. (2002) In Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics 539(1-2). p.25-39
Abstract
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... (More)
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. (Less)
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Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
539
issue
1-2
pages
25 - 39
publisher
Elsevier
external identifiers
  • wos:000176883100004
  • scopus:0037063140
ISSN
0370-2693
DOI
10.1016/S0370-2693(02)02035-X
language
English
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yes
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0103274a-957a-4f15-836c-fbb7465d6314 (old id 332891)
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2007-08-02 10:24:02
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2017-01-01 06:47:52
@article{0103274a-957a-4f15-836c-fbb7465d6314,
  abstract     = {The helicity structure of the diffractive electroproduction of rho mesons, e + p --&gt; e + rho + Y, is studied in a previously unexplored region of large four-momentum transfer squared at the proton vertex, t: 0 &lt; t' &lt; 3 GeV2, where t' = 	 - 	 min. The data used are collected with the HI detector at HERA in the kinematic domain 2.5 &lt; Q(2) &lt; 60 GeV2, 40 &lt; W &lt; 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.},
  author       = {Adloff, C and Andreev, V and Andrieu, B and Anthonis, T and Arkadov, V and Astvatsatourov, A and Babaev, A and Bahr, J and Baranov, P and Barrelet, E and Bartel, W and Becker, J and Beglarian, A and Behnke, O and Beier, C and Belousov, A and Berger, C and Berndt, T and Bizot, JC and Bohme, J and Boudry, V and Braunschweig, W and Brisson, V and Broker, HB and Brown, DP and Bruckner, W and Bruncko, D and Burger, J and Busser, FW and Bunyatyan, A and Burrage, A and Buschhorn, G and Bystritskaya, L and Campbell, AJ and Cao, J and Caron, S and Cassol-Brunner, F and Clarke, D and Clerbaux, B and Collard, C and Contreras, JG and Coppens, YR and Coughlan, JA and Cousinou, MC and Cox, BE and Cozzika, G and Cvach, J and Dainton, JB and Dau, WD and Daum, K and Davidsson, Mattias and Delcourt, B and Delerue, N and Demirchyan, R and De Roeck, A and De Wolf, EA and Diaconu, C and Dingfelder, J and Dixon, P and Dodonov, V and Dowell, JD and Droutskoi, A and Dubak, A and Duprel, C and Eckerlin, G and Eckstein, D and Efremenko, V and Egli, S and Eichler, R and Eisele, F and Eisenhandler, E and Ellerbrock, M and Elsen, E and Erdmann, M and Erdmann, W and Faulkner, PJW and Favart, L and Fedotov, A and Felst, R and Ferencei, J and Ferron, S and Fleischer, M and Fleming, YH and Flugge, G and Fomenko, A and Foresti, I and Formanek, J and Franke, G and Gabathuler, E and Gabathuler, K and Garvey, J and Gassner, J and Gayler, J and Gerhards, R and Gerlich, C and Ghazaryan, S and Goerlich, L and Gogitidze, N and Grab, C and Grabski, V and Grassler, H and Greenshaw, T and Grindhammer, G and Hadig, T and Haidt, D and Hajduk, L and Haller, J and Haynes, WJ and Heinemann, B and Heinzelmann, G and Henderson, RCW and Hengstmann, S and Henschel, H and Heremans, R and Herrera, G and Herynek, I and Hildebrandt, M and Hilgers, M and Hiller, KH and Hladky, J and Hoting, P and Hoffmann, D and Horisberger, R and Hovhannisyan, A and Hurling, S and Ibbotson, M and Issever, C and Jacquet, M and Jaffre, M and Janauschek, L and Janssen, X and Jemanov, V and Jönsson, Leif and Johnson, C and Johnson, DP and Jones, MAS and Jung, Hannes and Kant, D and Kapichine, M and Karlsson, Martin and Karschnick, O and Keil, F and Keller, N and Kennedy, J and Kenyon, IR and Kermiche, S and Kiesling, C and Kjellberg, Pär and Klein, A and Kleinwort, C and Kluge, T and Knies, G and Koblitz, B and Kolya, SD and Korbel, V and Kostka, P and Kotelnikov, SK and Koutouev, R and Koutov, A and Krehbiel, H and Kroseberg, J and Kruger, K and Kupper, A and Kuhr, T and Kurca, T and Lamb, D and Landon, MPJ and Lange, W and Lastovicka, T and Laycock, P and Lebailly, E and Lebedev, A and Leissner, B and Lemrani, R and Lendermann, V and Levonian, S and Lindström, Magnus and List, B and Lobodzinska, E and Lobodzinski, B and Loginov, A and Loktionova, N and Lubimov, V and Luders, S and Luke, D and Lytkin, L and Mahlke-Kruger, H and Malden, N and Malinovski, E and Malinovski, I and Maracek, R and Marage, P and Marks, J and Marshall, R and Martyn, HU and Martyniak, J and Maxfield, SJ and Meer, D and Mehta, A and Meier, K and Meyer, AB and Meyer, H and Meyer, J and Meyer, PO and Mikocki, S and Milstead, D and Mkrtchyan, T and Mohr, R and Mohrdieck, S and Mondragon, MN and Moreau, F and Morozov, A and Morris, JV and Muller, K and Murin, P and Nagovizin, V and Naroska, B and Naumann, J and Naumann, T and Nellen, G and Newman, PR and Niebergall, F and Niebuhr, C and Nix, O and Nowak, G and Olsson, JE and Ozerov, D and Panassik, V and Pascaud, C and Patel, GD and Peez, M and Perez, E and Phillips, JP and Pitzl, D and Poschl, R and Potachnikova, I and Povh, B and Radel, G and Rauschenberger, J and Reimer, P and Reisert, B and Reyna, D and Risler, C and Rizvi, E and Robmann, P and Roosen, R and Rostovtsev, A and Rusakov, S and Rybicki, K and Sankey, DPC and Schatzel, S and Scheins, J and Schilling, FP and Schleper, P and Schmidt, D and Schmidt, D and Schmidt, S and Schmitt, S and Schneider, M and Schoeffel, L and Schoning, A and Schorner, T and Schroder, V and Schultz-Coulon, HC and Schwanenberger, C and Sedlak, K and Sefkow, F and Shekelyan, V and Sheviakov, I and Shtarkov, LN and Sirois, Y and Sloan, T and Smirnov, P and Soloviev, Y and South, D and Spaskov, V and Specka, A and Spitzer, H and Stamen, R and Stella, B and Stiewe, J and Straumann, U and Swart, M and Tasevsky, M and Tchetchelnitski, S and Thompson, G and Thompson, PD and Tobien, N and Tomasz, F and Traynor, D and Truol, P and Tsipolitis, G and Tsurin, I and Turnau, J and Turney, JE and Tzamariudaki, E and Udluft, S and Urban, M and Usik, A and Valkar, S and Valkarova, A and Vallee, C and Van Mechelen, P and Vassiliev, S and Vazdik, Y and Vichnevski, A and Vorobiev, M and Wacker, K and Wagner, J and Wallny, R and Waugh, B and Weber, G and Weber, M and Wegener, D and Werner, C and Werner, M and Werner, N and Wessels, M and White, G and Wiesand, S and Wilksen, T and Winde, M and Winter, GG and Wissing, C and Wobisch, M and Woehrling, EE and Wunsch, E and Wyatt, AC and Zacek, J and Zalesak, J and Zhang, Z and Zhokin, A and Zomer, F and zur Nedden, M},
  issn         = {0370-2693},
  language     = {eng},
  number       = {1-2},
  pages        = {25--39},
  publisher    = {Elsevier},
  series       = {Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics},
  title        = {A measurement of the t dependence of the helicity structure of diffractive rho meson electroproduction at HERA},
  url          = {http://dx.doi.org/10.1016/S0370-2693(02)02035-X},
  volume       = {539},
  year         = {2002},
}