Skip to Main content Skip to Navigation
Journal articles

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

C. Adloff V. Andreev B. Andrieu T. Anthonis V. Arkadov A. Astvatsatourov A. Babaev J. Bahr P. Baranov E. Barrelet 1 W. Bartel J. Becker A. Beglarian O. Behnke C. Beier A. Belousov C. Berger T. Berndt J.C. Bizot 2 J. Bohme V. Boudry W. Braunschweig V. Brisson 2 H.B. Broker D.P. Brown W. Bruckner D. Bruncko J. Burger F.W. Busser A. Bunyatyan A. Burrage G. Buschhorn L. Bystritskaya A.J. Campbell J. Cao 2 S. Caron F. Cassol-Brunner 3 D. Clarke B. Clerbaux C. Collard J.G. Contreras Y.R. Coppens J.A. Coughlan M.C. Cousinou 3 B.E. Cox G. Cozzika J. Cvach J.B. Dainton W.D. Dau K. Daum M. Davidsson B. Delcourt 2 N. Delerue 3 R. Demirchyan A. de Roeck E.A. de Wolf C. Diaconu 3 J. Dingfelder P. Dixon V. Dodonov J.D. Dowell A. Droutskoi A. Dubak C. Duprel G. Eckerlin D. Eckstein V. Efremenko S. Egli R. Eichler F. Eisele E. Eisenhandler M. Ellerbrock E. Elsen M. Erdmann W. Erdmann P.J.W. Faulkner L. Favart A. Fedotov R. Felst J. Ferencei S. Ferron M. Fleischer Y.H. Fleming G. Flugge A. Fomenko I. Foresti J. Formanek G. Franke E. Gabathuler K. Gabathuler J. Garvey J. Gassner J. Gayler R. Gerhards C. Gerlich S. Ghazaryan L. Goerlich N. Gogitidze C. Grab V. Grabski H. Grassler T. Greenshaw G. Grindhammer T. Hadig D. Haidt L. Hajduk J. Haller W.J. Haynes B. Heinemann G. Heinzelmann R.C.W. Henderson S. Hengstmann H. Henschel R. Heremans G. Herrera I. Herynek M. Hildebrandt M. Hilgers K.H. Hiller J. Hladky P. Hoting D. Hoffmann 3 R. Horisberger A. Hovhannisyan S. Hurling M. Ibbotson C. Issever M. Jacquet 2 M. Jaffre 2 L. Janauschek X. Janssen V. Jemanov L. Jonsson C. Johnson D.P. Johnson M.A.S. Jones H. Jung D. Kant M. Kapichine M. Karlsson O. Karschnick F. Keil N. Keller J. Kennedy I.R. Kenyon S. Kermiche 3 C. Kiesling P. Kjellberg M. Klein C. Kleinwort T. Kluge G. Knies B. Koblitz S.D. Kolya V. Korbel P. Kostka S.K. Kotelnikov R. Koutouev A. Koutov H. Krehbiel J. Kroseberg K. Kruger A. Kupper T. Kuhr T. Kurca D. Lamb M.P.J. Landon W. Lange T. Lastovicka P. Laycock E. Lebailly 2 A. Lebedev B. Leiner R. Lemrani V. Lendermann S. Levonian M. Lindstroem B. List E. Lobodzinska B. Lobodzinski A. Loginov N. Loktionova V. Lubimov S. Luders D. Luke L. Lytkin H. Mahlke-Kruger N. Malden E. Malinovski I. Malinovski R. Maracek P. Marage J. Marks R. Marshall H.U. Martyn J. Martyniak S.J. Maxeld D. Meer A. Mehta K. Meier A.B. Meyer H. Meyer J. Meyer P.O. Meyer S. Mikocki D. Milstead T. Mkrtchyan R. Mohr S. Mohrdieck M.N. Mondragon F. Moreau A. Morozov J.V. Morris K. Muller P. Murn V. Nagovizin B. Naroska J. Naumann T. Naumann G. Nellen P.R. Newman F. Niebergall C. Niebuhr O. Nix G. Nowak J.E. Olsson D. Ozerov V. Panassik C. Pascaud 2 G.D. Patel M. Peez 3 Emile Perez J.P. Phillips D. Pitzl R. Poschl 2 I. Potachnikova B. Povh G. Radel J. Rauschenberger P. Reimer B. Reisert D. Reyna C. Risler E. Rizvi P. Robmann R. Roosen A. Rostovtsev S. Rusakov K. Rybicki D.P.C. Sankey S. Schatzel J. Scheins F.P. Schilling P. Schleper D. Schmidt S. Schmidt S. Schmitt M. Schneider 3 L. Schoeffel A. Schoning T. Schorner V. Schroder H.C. Schultz-Coulon C. Schwanenberger K. Sedlak F. Sefkow V. Shekelyan I. Sheviakov L.N. Shtarkov Y. Sirois T. Sloan P. Smirnov Y. Soloviev D. South V. Spaskov A. Specka H. Spitzer R. Stamen B. Stella J. Stiewe U. Straumann M. Swart M. Tasevsky S. Tchetchelnitski G. Thompson P.D. Thompson N. Tobien F. Tomasz D. Traynor P. Truol G. Tsipolitis I. Tsurin J. Turnau J.E. Turney E. Tzamariudaki S. Udluft Martin Urban A. Usik S. Valkar A. Valkarova C. Vallee 3 P. van Mechelen S. Vassiliev Y. Vazdik A. Vichnevski M. Vorobev K. Wacker J. Wagner R. Wallny B. Waugh G. Weber M. Weber D. Wegener C. Werner M. Werner N. Werner M. Wessels G. White S. Wiesand T. Wilksen M. Winde G.G. Winter C. Wissing M. Wobisch E.E. Woehrling E. Wunsch A.C. Wyatt J. Zacek J. Zalesak Zhiqing Zhang 2 A. Zhokin F. Zomer 2 M. Zur Nedden
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 GeV^2, where t' = |t| - |t|_min. The data used are collected with the H1 detector at HERA in the kinematic domain 2.5 < Q^2 < 60 GeV^2, 40 < W < 120 GeV. No t dependence of the r^04_00 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^5_00+2r^5_11 and r^1_00+2r^1_11. These t dependences are consistently described by a perturbative QCD model based on the exchange of two gluons.
Document type :
Journal articles
Complete list of metadata

Cited literature [3 references]  Display  Hide  Download

http://hal.in2p3.fr/in2p3-00011715
Contributor : Magali Damoiseaux <>
Submitted on : Monday, July 22, 2002 - 5:42:37 PM
Last modification on : Wednesday, April 7, 2021 - 3:26:01 PM
Long-term archiving on: : Tuesday, March 30, 2010 - 5:38:20 PM

Identifiers

  • HAL Id : in2p3-00011715, version 1

Citation

C. Adloff, V. Andreev, B. Andrieu, T. Anthonis, V. Arkadov, et al.. A measurement of the $t$ dependence of the helicity structure of diffractive $\rho$ meson electroproduction at HERA. Physics Letters B, Elsevier, 2002, 539, pp.25-39. ⟨in2p3-00011715⟩

Share

Metrics

Record views

331

Files downloads

152