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Inclusive and Multi-Jet Production at high Q2 and determination of alpha_s using full HERA data |
| Reference |
Preliminary for DIS2008, March 2008 |
| Document |
Conference paper or talk
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| Figures |
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(World)
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(World_AL_H4)
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| Contact |
M. Gouzevitch, A. Specka |
| Abstract |
High $E_T$ jet production is studied in neutral current deep-inelastic $e^{\pm}p$ scattering at large four
momentum transfer squared $Q^2>150$~GeV$^2$ with the H1 detector, using a combined data sample of HERA I and HERA II, corresponding to an integrated luminosity of 395 pb$^{-1}$. The inclusive jet, 2-jet and 3-jet cross
sections, normalized to the neutral current deep-inelastic scattering cross section, referred to as jet
multiplicity, 2-jet and 3-jet rates, are measured as a function of $Q^2$ and of the jet transverse energy in the
Breit frame $E_{T,B}$. The measurements are found to be well described by calculations at next-to-leading order
in perturbative QCD. The preliminary results on inclusive jets presented here are compared to recently
published results, based on HERA I data with an integrated luminosity 65.4 pb$^{-1}$. The strong coupling
$lpha_s$ is extracted from each of the individual jet measurements as well as from their combination. |
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