C. Adloff et al., Measurement and QCD analysis of jet cross sections in deep-inelastic positron-proton collisions at root s of 300 GeV, EUR PHY J C, 19(2), 2001, pp. 289-311
Jet production is studied in the Breit frame in deep-inelastic positron-pro
ton scattering over a large range of four-momentum transfers 5 < Q(2) < 15
000 GeV2 and transverse jet energies 7 < E-T < 60 GeV. The analysis is base
d on data corresponding to an integrated luminosity of L-int similar or equ
al to 33 pb(-1) taken in the years 1995-1997 with the H1 detector at HERA a
t a center-of-mass energy roots = 300 GeV. Dijet and inclusive jet cross se
ctions are measured multi-differentially using k(perpendicular to) and angu
lar ordered jet algorithms. The results are compared to the predictions of
perturbative QCD calculations in next-to-leading order in the strong coupli
ng constant alpha (s). QCD fits are performed in which alpha (s) and the gl
uon density in the proton are determined separately. The gluon density is f
ound to be in good agreement with results obtained in other analyses using
data from different processes. The strong coupling constant is determined t
o be alpha (s) (M-Z) = 0.1186 +/- 0.0059. In addition an analysis of the da
ta in which both alpha (s) and the gluon density are determined simultaneou
sly is presented.