Leif Jönsson
Professor emeritus
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