Measurement of D* Meson Cross Sections at HERA and Determination of the Gluon Density in the Proton using NLO QCD
| dc.creator | Adloff, C. | |
| dc.date | 1998-12-18 | |
| dc.date.accessioned | 2026-07-07T11:46:55Z | |
| dc.date.available | 2026-07-07T11:46:55Z | |
| dc.description | With the H1 detector at the ep collider HERA, D* meson production cross sections have been measured in deep inelastic scattering with four-momentum transfers Q^2>2 GeV2 and in photoproduction at energies around W(gamma p)~ 88 GeV and 194 GeV. Next-to-Leading Order QCD calculations are found to describe the differential cross sections within theoretical and experimental uncertainties. Using these calculations, the NLO gluon momentum distribution in the proton, x_g g(x_g), has been extracted in the momentum fraction range 7.5x10^{-4}< x_g <4x10^{-2} at average scales mu^2 =25 to 50 GeV2. The gluon momentum fraction x_g has been obtained from the measured kinematics of the scattered electron and the D* meson in the final state. The results compare well with the gluon distribution obtained from the analysis of scaling violations of the proton structure function F_2. | |
| dc.description | 27 pages, 9 figures, 2 tables, submitted to Nucl. Phys. B | |
| dc.identifier | https://arxiv.org/abs/hep-ex/9812023 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/9812023 | |
| dc.identifier | Nucl.Phys.B545:21-44,1999 | |
| dc.identifier | doi:10.1016/S0550-3213(99)00119-4 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/202392 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of D* Meson Cross Sections at HERA and Determination of the Gluon Density in the Proton using NLO QCD | |
| dc.type | text |