Inclusive-jet cross sections in NC DIS at HERA and a comparison of the k(T), anti-k(T) and SIScone jet algorithms
| Jazyk: | angličtina |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
DEEP-INELASTIC-SCATTERING
Renormalization MONTE-CARLO GENERATOR ZEUS BARREL CALORIMETER Hadron-electron collisions PHYSICS EVENT GENERATION COLOR DIPOLE MODEL QCD Jet algorithms MULTIJET PRODUCTION DIJET PRODUCTION LEPTON-NUCLEON SCATTERING PARTON DISTRIBUTIONS HADRON-COLLISIONS Deep inelastic scattering |
| Zdroj: | Physics Letters B. 691(3):127-137 |
| ISSN: | 0370-2693 |
| DOI: | 10.1016/j.physletb.2010.06.015 |
| Popis: | For the first time, differential inclusive-jet cross sections have been measured in neutral current deep inelastic ep scattering using the anti-k(T) and SIScone algorithms. The measurements were made for boson virtualities Q(2) > 125 GeV2 with the ZEUS detector at HERA using an integrated luminosity of 82 pb(-1) and the jets were identified in the Breit frame. The performance and suitability of the jet algorithms for their use in hadron-like reactions were investigated by comparing the measurements to those performed with the k(T) algorithm. Next-to-leading-order QCD calculations give a good description of the measurements. Measurements of the ratios of cross sections using different jet algorithms are also presented; the measured ratios are well described by calculations including up to O(alpha(3)(s)) terms. Values of alpha(s)(M-z) were extracted from the data; the results are compatible with and have similar precision to the value extracted from the kT analysis. (C) 2010 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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