Measurement of inclusive prompt photon photoproduction at HERA.
First inclusive measurements of isolated prompt photons in photoproduction at the HERA ep collider have been made with the ZEUS detector, using an integrated luminosity of 38.4 pb-1. Cross sections are given as a function of the pseudorapidity and the transverse energy ({eta}{sup {gamma}}, E{sub T}{sup {gamma}}) of the photon, for E{sub T}{sup {gamma}}>5 GeV in the {gamma}p centre-of-mass energy range 134-285 GeV. Comparisons are made with predictions from Monte Carlo models having leading-logarithm parton showers, and with next-to-leading-order QCD calculations, using currently available parameterisations of the photon structure. For forward {eta}{sup {gamma}} (proton direction) good agreement is found, but in the rear direction all predictions fall below the data.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 949536
- Report Number(s):
- ANL/HEP/JA-41797
- Journal Information:
- Phys. Lett. B, Journal Name: Phys. Lett. B Journal Issue: 472 ; 2000 Vol. B; ISSN PYLBAJ; ISSN 0370-2693
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
High-E{sub T} dijet photoproduction at HERA
Jet shapes at Hera
High-E{sub T} inclusive jet cross sections in photoproduction at HERA.
Journal Article
·
Mon Oct 01 00:00:00 EDT 2007
· Physical Review. D, Particles Fields
·
OSTI ID:21032312
Jet shapes at Hera
Journal Article
·
Sun Apr 20 00:00:00 EDT 1997
· AIP Conference Proceedings
·
OSTI ID:21167619
High-E{sub T} inclusive jet cross sections in photoproduction at HERA.
Journal Article
·
Wed Dec 31 23:00:00 EST 1997
· Eur. Phys. J. C
·
OSTI ID:938303