Di-jet cross section in photoproduction and gluon density in the photon

Authors
Citation
B. Andrieu, Di-jet cross section in photoproduction and gluon density in the photon, NUCL PH B-P, 82, 2000, pp. 86-92
Citations number
29
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
ISSN journal
0920-5632 → ACNP
Volume
82
Year of publication
2000
Pages
86 - 92
Database
ISI
SICI code
0920-5632(200003)82:<86:DCSIPA>2.0.ZU;2-8
Abstract
We report on a new measurement of di-jet cross section in photoproduction, using an integrated luminosity of L similar or equal to 7.2 pb(-1) taken wi th the H1 detector at HERA. A leading order effective parton density of the photon is deduced, which extends down to small parton fractional energies of x, = 0.04. This allows a measurement, in a largely unexplored kinematic domain, of the gluon density in the photon which is compared to QCD-inspire d models and to a recent H1 measurement using charged tracks.