Leif Jönsson
Professor emeritus
Search for odderon-induced contributions to exclusive pi(0) photoproduction at HERA
Author
- C Adloff
- V Andreev
- B Andrieu
- T Anthonis
- V Arkadov
- A Astvatsatourov
- A Babaev
- J Bahr
- P Baranov
- E Barrelet
- W Bartel
- J Becker
- A Beglarian
- O Behnke
- C Beier
- A Belousov
- C Berger
- T Berndt
- JC Bizot
- J Bohme
- V Boudry
- W Braunschweig
- V Brisson
- HB Broker
- DP Brown
- W Bruckner
- D Bruncko
- J Burger
- FW Busser
- A Bunyatyan
- A Burrage
- G Buschhorn
- L Bystritskaya
- AJ Campbell
- J Cao
- S Caron
- F Cassol-Brunner
- D Clarke
- C Collard
- JG Contreras
- YR Coppens
- JA Coughlan
- MC Cousinou
- BE Cox
- G Cozzika
- J Cvach
- JB Dainton
- WD Dau
- K Daum
- Mattias Davidsson
- B Delcourt
- N Delerue
- R Demirchyan
- A De Roeck
- EA De Wolf
- C Diaconu
- J Dingfelder
- P Dixon
- V Dodonov
- JD 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
- A Erdmann
- W Erdmann
- PJW Faulkner
- L Favart
- A Fedotov
- R Felst
- J Ferencei
- S Ferron
- M Fleischer
- YH 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
- T Golling
- C Grab
- V Grabski
- H Grassler
- T Greenshaw
- G Grindhammer
- T Hadig
- D Haidt
- L Hajduk
- J Haller
- WJ Haynes
- B Heinemann
- G Heinzelmann
- RCW Henderson
- S Hengstmann
- H Henschel
- R Heremans
- G Herrera
- I Herynek
- M Hildebrandt
- M Hilgers
- KH Hiller
- J Hladky
- P Hoting
- D Hoffmann
- R Horisberger
- A Hovhannisyan
- S Hurling
- M Ibbotson
- C Issever
- M Jacquet
- M Jaffre
- L Janauschek
- X Janssen
- V Jemanov
- Leif Jönsson
- C Johnson
- DP Johnson
- MAS Jones
- Hannes Jung
- D Kant
- M Kapichine
- Martin Karlsson
- O Karschnick
- F Keil
- N Keller
- J Kennedy
- IR Kenyon
- S Kermiche
- C Kiesling
- Pär Kjellberg
- M Klein
- C Kleinwort
- T Kluge
- G Knies
- B Koblitz
- SD Kolya
- V Korbel
- P Kostka
- SK Kotelnikov
- R Koutouev
- A Koutov
- H Krehbiel
- J Kroseberg
- K Kruger
- A Kupper
- T Kuhr
- T Kurca
- D Lamb
- MPJ Landon
- W Lange
- T Lastovicka
- P Laycock
- E Lebailly
- A Lebedev
- B Leissner
- R Lemrani
- V Lendermann
- S Levonian
- Magnus Lindström
- 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
- HU Martyn
- J Martyniak
- SJ Maxfield
- D Meer
- A Mehta
- K Meier
- AB Meyer
- H Meyer
- J Meyer
- PO Meyer
- S Mikocki
- D Milstead
- T Mkrtchyan
- R Mohr
- S Mohrdieck
- MN Mondragon
- F Moreau
- A Morozov
- JV Morris
- K Muller
- P Murin
- V Nagovizin
- B Naroska
- J Naumann
- T Naumann
- G Nellen
- PR Newman
- F Niebergall
- C Niebuhr
- O Nix
- G Nowak
- JE Olsson
- D Ozerov
- V Panassik
- C Pascaud
- GD Patel
- M Peez
- E Perez
- JP Phillips
- D Pitzl
- R Poschl
- 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
- DPC Sankey
- S Schatzel
- J Scheins
- FP Schilling
- P Schleper
- D Schmidt
- D Schmidt
- S Schmidt
- S Schmitt
- M Schneider
- L Schoeffel
- A Schooning
- T Schorner
- V Schroder
- HC Schultz-Coulon
- C Schwanenberger
- K Sedlak
- F Sefkow
- V Shekelyan
- I Sheviakov
- LN 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
- PD Thompson
- N Tobien
- F Tomasz
- D Traynor
- P Truol
- G Tsipolitis
- I Tsurin
- J Turnau
- JE Turney
- E Tzamariudaki
- S Udluft
- M Urban
- A Usik
- S Valkar
- A Valkarova
- C Vallee
- P Van Mechelen
- S Vassiliev
- Y Vazdik
- A Vichnevski
- M Vorobiev
- 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
- GG Winter
- C Wissing
- M Wobisch
- EE Woehrling
- E Wunsch
- AC Wyatt
- J Zacek
- J Zalesak
- Z Zhang
- A Zhokin
- F Zomer
- M zur Nedden
Summary, in English
A search for contributions to the reaction ep --> epi(0)N* from photon-odderon fusion in the photoproduction regime at HERA is reported, at an average photon-proton centre-of-mass energy <W> = 215 GeV. The measurement proceeds via detection of the pi(0) decay photons, a leading neutron from the N* decay, and the scattered electron. No pi(0) signal is observed and an upper limit on the cross section for the photon-odderon fusion process of sigma(gammap --> pi(0)N*) < 49 nb at the 95% confidence level is derived, integrated over the experimentally accessible range of the squared four-momentum transfer at the nucleon vertex 0.02 < < 0.3 GeV2. This excludes a recent prediction from a calculation based on a non-perturbative QCD model of a photon-odderon fusion cross section above 200 nb. (C) 2002 Elsevier Science B.V. All rights reserved.
Department/s
- Particle and nuclear physics
- Chemical Physics
Publishing year
2002
Language
English
Pages
35-43
Publication/Series
Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume
544
Issue
1-2
Document type
Journal article
Publisher
Elsevier
Topic
- Subatomic Physics
Status
Published
ISBN/ISSN/Other
- ISSN: 0370-2693