Details

Autor(en) / Beteiligte

• Adloff, C.
• Anderson, M. Eric
• Andreev, V.
• Andrieu, B.
• Arkadov, V.
• Arndt, C.
• Ayyaz, I.
• Babaev, A.
• Bahr, J.
• Baranov, P.
• Barrelet, E.
• Bartel, W.
• Bassler, U.
• Bate, P.
• Beck, M.
• Beglarian, A.
• Behnke, O.
• Behrend, H.J.
• Beier, C.
• Belousov, A.
• Berger, C.
• Bernardi, G.
• Bertrand-Coremans, G.
• Biddulph, P.
• Bizot, J.C.
• Boudry, V.
• Braunschweig, W.
• Brisson, V.
• Brown, D.P.
• Bruckner, W.
• Bruel, Pascal
• Bruncko, D.
• Burger, J.
• Busser, F.W.
• Buniatian, A.
• Burke, S.
• Burrage, A.
• Buschhorn, G.
• Calvet, D.
• Campbell, A.J.
• Carli, T.
• Chabert, E.
• Charlet, M.
• Clarke, D.
• Clerbaux, B.
• Contreras, J.G.
• Cormack, C.
• Coughlan, J.A.
• Cousinou, M.C.
• Cox, B.E.
• Cozzika, G.
• Cvach, J.
• Dainton, J.B.
• Dau, W.D.
• Daum, K.
• David, M.
• Davidsson, M.
• de Roeck, A.
• de Wolf, E.A.
• Delcourt, B.
• Demirchyan, R.
• Diaconu, C.
• Dirkmann, M.
• Dixon, P.
• Dlugosz, W.
• Donovan, K.T.
• Dowell, J.D.
• Droutskoi, A.
• Ebert, J.
• Eckerlin, G.
• Eckstein, D.
• Efremenko, V.
• Egli, S.
• Eichler, R.
• Eisele, F.
• Eisenhandler, E.
• Elsen, E.
• Enzenberger, M.
• Erdmann, M.
• Fahr, A.B.
• Favart, L.
• Fedotov, A.
• Felst, R.
• Feltesse, J.
• Ferencei, J.
• Ferrarotto, F.
• Fleischer, M.
• Flugge, G.
• Fomenko, A.
• Formanek, J.
• Foster, J.M.
• Franke, G.
• Gabathuler, E.
• Gabathuler, K.
• Gaede, F.
• Garvey, J.
• Gassner, J.
• Gayler, J.
• Gerhards, R.
• Ghazaryan, S.

Titel

Measurement of d$^\star$ meson cross-sections at Hera and determination of the gluon density in the proton using NLO QCD

Ist Teil von

• Nuclear physics. B, 1999, Vol.545, p.21-44

Ort / Verlag

Elsevier

Erscheinungsjahr

1999

Link zum Volltext

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• 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.