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Inclusive jet cross sections in the Breit frame in neutral current deep inelastic scattering at HERA and determination of alpha(s)
- Source :
- Physics Letters B, 547 (3-4)
- Publication Year :
- 2002
-
Abstract
- Inclusive jet differential cross sections have been measured in neutral current deep inelastic e+p scattering for boson virtualities Q**2>125 GeV**2. The data were taken using the ZEUS detector at HERA and correspond to an integrated luminosity of 38.6 pb-1. Jets were identified in the Breit frame using the longitudinally invariant K_T cluster algorithm. Measurements of differential inclusive jet cross sections are presented as functions of jet transverse energy (E_T,jet), jet pseudorapidity and Q**2, for jets with E_T,jet>8 GeV. Next-to-leading-order QCD calculations agree well with the measurements both at high Q**2 and high E_T,jet. The value of alpha_s(M_Z), determined from an analysis of dsigma/dQ**2 for Q**2>500 GeV**2, is alpha_s(M_Z) = 0.1212 +/- 0.0017 (stat.) +0.0023 / -0.0031 (syst.) +0.0028 / -0.0027 (th.).<br />34 pages, 6 figures, 8 tables; submitted to Phys. Lett
- Subjects :
- Nuclear and High Energy Physics
Particle physics
MONTE-CARLO GENERATOR
Astrophysics::High Energy Astrophysical Phenomena
DYNAMICAL PARTON DISTRIBUTIONS
FOS: Physical sciences
COLOR DIPOLE MODEL
01 natural sciences
High Energy Physics - Experiment
DEUTERON STRUCTURE FUNCTIONS
HIGH STATISTICS MEASUREMENT
LEPTON-NUCLEON SCATTERING
CENTRAL TRACKING DETECTOR
STRONG-COUPLING CONSTANT
ZEUS BARREL CALORIMETER
F-2 STRUCTURE-FUNCTION
Nuclear physics
High Energy Physics - Experiment (hep-ex)
0103 physical sciences
Nuclear Experiment
010306 general physics
Quantum chromodynamics
Physics
Research Groups and Centres\Physics\Low Temperature Physics
Jet (fluid)
ZEUS (particle detector)
Luminosity (scattering theory)
Neutral current
Faculty of Science\Physics
010308 nuclear & particles physics
High Energy Physics::Phenomenology
ZEUS
HERA
Deep inelastic scattering
Pseudorapidity
High Energy Physics::Experiment
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Physics Letters B, 547 (3-4)
- Accession number :
- edsair.doi.dedup.....559991842610f66095c155f77ec35739