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Leif Jönsson

Leif Jönsson

Professor emeritus

Leif Jönsson

Diffractive photoproduction of rho mesons with large momentum transfer at HERA

Author

  • A. Aktas
  • V. Andreev
  • T. Anthonis
  • B. Antunovic
  • S. Aplin
  • A. Asmone
  • A. Astvatsatourov
  • A. Babaev
  • S. Backovic
  • A. Baghdasaryan
  • P. Baranov
  • E. Barrelet
  • W. Bartel
  • S. Baudrand
  • S. Baumgartner
  • J. Becker
  • M. Beckingham
  • O. Behnke
  • O. Behrendt
  • A. Belousov
  • N. Berger
  • J. C. Bizot
  • M. -O. Boenig
  • V. Boudry
  • J. Bracinik
  • G. Brandt
  • V. Brisson
  • D. Bruncko
  • F. W. Buesser
  • A. Bunyatyan
  • G. Buschhorn
  • L. Bystritskaya
  • A. J. Campbell
  • F. Cassol-Brunner
  • K. Cerny
  • V. Cerny
  • V. Chekelian
  • J. G. Contreras
  • J. A. Coughlan
  • B. E. Cox
  • G. Cozzika
  • J. Cvach
  • J. B. Dainton
  • W. D. Dau
  • K. Daum
  • Y. de Boer
  • B. Delcourt
  • M. Del Degan
  • A. De Roeck
  • E. A. De Wolf
  • C. Diaconu
  • V. Dodonov
  • A. Dubak
  • G. Eckerlin
  • V. Efremenko
  • S. Egli
  • R. Eichler
  • F. Eisele
  • A. Eliseev
  • E. Elsen
  • S. Essenov
  • A. Falkewicz
  • P. J. W. Faulkner
  • L. Favart
  • A. Fedotov
  • R. Felst
  • J. Feltesse
  • J. Ferencei
  • L. Finke
  • M. Fleischer
  • P. Fleischmann
  • G. Flucke
  • A. Fomenko
  • G. Franke
  • T. Frisson
  • E. Gabathuler
  • E. Garutti
  • J. Gayler
  • C. Gerlich
  • S. Ghazaryan
  • S. Ginzburgskaya
  • A. Glazov
  • I. Glushkov
  • L. Goerlich
  • M. Goettlich
  • N. Gogitidze
  • S. Gorbounov
  • C. Grab
  • T. Greenshaw
  • M. Gregori
  • B. R. Grell
  • G. Grindhammer
  • C. Gwilliam
  • D. Haidt
  • L. Hajduk
  • Magnus Hansson
  • G. Heinzelmann
  • R. C. W. Henderson
  • H. Henschel
  • G. Herrera
  • M. Hildebrandt
  • K. H. Hiller
  • D. Hoffmann
  • R. Horisberger
  • A. Hovhannisyan
  • T. Hreus
  • S. Hussain
  • M. Ibbotson
  • M. Ismail
  • M. Jacquet
  • L. Janauschek
  • X. Janssen
  • V. Jemanov
  • Leif Jönsson
  • D. P. Johnson
  • A. W. Jung
  • Hannes Jung
  • M. Kapichine
  • J. Katzy
  • I. R. Kenyon
  • C. Kiesling
  • M. Klein
  • C. Kleinwort
  • T. Klimkovich
  • T. Kluge
  • G. Knies
  • Albert Knutsson
  • V. Korbel
  • P. Kostka
  • K. Krastev
  • J. Kretzschmar
  • A. Kropivnitskaya
  • K. Krueger
  • M. P. J. Landon
  • W. Lange
  • T. Lastovicka
  • G. Lastovicka-Medin
  • P. Laycock
  • A. Lebedev
  • G. Leibenguth
  • V. Lendermann
  • S. Levonian
  • L. Linfield
  • K. Lipka
  • A. Liptaj
  • B. List
  • J. List
  • E. Lobodzinska
  • N. Loktionova
  • R. Lopez-Fernandez
  • V. Lubimov
  • A. I. Lucaci-Timoce
  • H. Lueders
  • D. Lueke
  • T. Lux
  • L. Lytkin
  • A. Makankine
  • N. Malden
  • E. Malinovski
  • S. Mangano
  • R. Marage
  • R. Marshall
  • M. Martisikova
  • H. -U. Martyn
  • S. J. Maxfield
  • A. Mehta
  • K. Meier
  • A. B. Meyer
  • H. Meyer
  • J. Meyer
  • V. Michels
  • S. Mikocki
  • I. Milcewicz-Mika
  • D. Milstead
  • D. Mladenov
  • A. Mohamed
  • F. Moreau
  • A. Morozov
  • J. V. Morris
  • M. U. Mozer
  • K. Mueller
  • P. Murin
  • K. Nankov
  • B. Nozicka
  • Th. Naumann
  • P. R. Newman
  • C. Niebuhr
  • A. Nikiforov
  • G. Nowak
  • K. Nowak
  • M. Nozicka
  • R. Oganezov
  • B. Olivier
  • J. E. Olsson
  • Sakar Osman
  • D. Ozerov
  • V. Palichik
  • I. Panagoulias
  • T. Papadopoulou
  • C. Pascaud
  • G. D. Patel
  • H. Peng
  • E. Perez
  • D. Perez-Astudillo
  • A. Perieanu
  • A. Petrukhin
  • D. Pitzl
  • R. R. Placakyte
  • B. Portheault
  • B. Povh
  • P. Prideaux
  • A. J. Rahmat
  • N. Raicevic
  • P. Reimer
  • A. Rimmer
  • C. Risler
  • E. Rizvi
  • P. Robmann
  • B. Roland
  • R. Roosen
  • A. Rostovtsev
  • Z. Rurikova
  • S. Rusakov
  • F. Salvaire
  • D. P. C. Sankey
  • E. Sauvan
  • S. Schaetzel
  • S. Schmidt
  • S. Schmitt
  • C. Schmitz
  • L. Schoeffel
  • A. Schoening
  • H. -C. Schultz-Coulon
  • F. Sefkow
  • R. N. Shaw-West
  • I. Sheviakov
  • L. N. Shtarkov
  • T. Sloan
  • P. Smirnov
  • Y. Soloviev
  • D. South
  • V. Spaskov
  • A. Specka
  • M. Steder
  • B. Stella
  • J. Stiewe
  • U. Straumann
  • D. Sunar
  • V. Tchoulakov
  • G. Thompson
  • P. D. Thompson
  • T. Toll
  • F. Tomasz
  • D. Traynor
  • P. Truoel
  • I. Tsakov
  • G. Tsipolitis
  • I. Tsurin
  • J. Turnau
  • E. Tzamariudaki
  • K. Urban
  • M. Urban
  • A. Usik
  • D. Utkin
  • A. Valkarova
  • C. Vallee
  • P. Van Mechelen
  • A. Vargas Trevino
  • Y. Vazdik
  • C. Veelken
  • S. Vinokurova
  • V. Volchinski
  • K. Wacker
  • G. Weber
  • R. Weber
  • D. Wegener
  • C. Werner
  • M. Wessels
  • B. Wessling
  • Ch. Wissing
  • R. Wolf
  • E. Wuensch
  • S. Xella
  • W. Yan
  • V. Yeganov
  • J. Zacek
  • J. Zalesak
  • Z. Zhang
  • A. Zhelezov
  • A. Zhokin
  • Y. C. Zhu
  • J. Zimmermann
  • T. Zimmermann
  • H. Zohrabyan
  • F. Zomer

Summary, in English

The diffractive photoproduction of rho mesons, ep -> e rho Y, with large momentum transfer squared at the proton vertex, vertical bar t vertical bar, is studied with the H1 detector at HERA using an integrated luminosity of 20.1 pb(-1). The photon-proton centre of mass energy spans the range 75 < W < 95 GeV, the photon virtuality is restricted to Q(2) < 0.01 GeV2 and the mass My of the proton remnant is below 5 GeV. The t dependence of the cross section is measured for the range 1.5 < vertical bar t vertical bar < 10.0 GeV2 and is well described by a power law, d sigma/d vertical bar t vertical bar proportional to vertical bar t vertical bar(-n). The spin density matrix elements, which provide information on the helicity structure of the interaction, are extracted using measurements of angular distributions of the rho decay products. The data indicate a violation of s-channel helicity conservation, with contributions from both single and double helicity-flip being observed. The results are compared to the predictions of perturbative QCD models.

Department/s

  • Particle and nuclear physics

Publishing year

2006

Language

English

Pages

422-431

Publication/Series

Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics

Volume

638

Issue

5-6

Document type

Journal article

Publisher

Elsevier

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0370-2693