Published February 2015 | Version v1
Journal article Metadata-only

Measurement of multijet production in ep collisions at high Q2 and determination of the strong coupling αs

Creators

  • 1. Lebedev Physical Institute, Moscow (Russian Federation)
  • 2. Yerevan Physics Institute, Yerevan (Armenia)
  • 3. Institute of Physics and Technology of the Mongolian Academy of Sciences, Ulaanbaatar (Mongolia)
  • 4. DESY, Hamburg (Germany)
  • 5. LLR, Ecole Polytechnique, CNRS/IN2P3, Palaiseau (France)
  • 6. Oxford University, Department of Physics, Oxford (United Kingdom)
  • 7. LAL, Universite Paris-Sud, CNRS/IN2P3, Orsay (France)
  • 8. University of Birmingham, School of Physics and Astronomy, Birmingham (United Kingdom)
  • 9. Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)
  • 10. CINVESTAV, Departamento de Fisica Aplicada, Merida, Yucatan (Mexico)
  • 11. Inter-University Institute for High Energies ULB-VUB, Brussels and Universiteit Antwerpen, Antwerp (Belgium)
  • 12. Charles University, Faculty of Mathematics and Physics, Pragua (Czech Republic)
  • 13. Max-Planck-Institut fuer Physik, Munich (Germany)
  • 14. University of Liverpool, Department of Physics, Liverpool (United Kingdom)
  • 15. Fachbereich C, Universitaet Wuppertal, Wuppertal (Germany)
  • 16. CPPM, Aix-Marseille University, CNRS/IN2P3, Marseille (France)
  • 17. National Institute for Physics and Nuclear Engineering (NIPNE), Bucharest (Romania)
  • 18. Universitaet Hamburg, Institut fuer Experimentalphysik, Hamburg (Germany)
  • 19. Paul Scherrer Institut, Villigen (Switzerland)
  • 20. CEA, DSM/Irfu, CE-Saclay, Gif-sur-Yvette (France)
  • 21. Slovak Academy of Sciences, Institute of Experimental Physics, Kosice (Slovakia)
  • 22. Institute for Nuclear Physics, Krakow (Poland)
  • 23. Institut fuer Teilchenphysik, ETH, Zurich (Switzerland)
  • 24. University of Lancaster, Department of Physics, Lancaster (United Kingdom)
  • 25. Universitaet Heidelberg, Kirchhoff-Institut fuer Physik, Heidelberg (Germany)
  • 26. Academy of Sciences of the Czech Republic, Institute of Physics, Prague (Czech Republic)
  • 27. Universitaet Heidelberg, Physikalisches Institut, Heidelberg (Germany)
  • 28. Joint Institute for Nuclear Research, Dubna (Russian Federation)
  • 29. Queen Mary, University of London, School of Physics and Astronomy, London (United Kingdom)
  • 30. DESY, Zeuthen (Germany)
  • 31. I. Physikalisches Institut der RWTH, Aachen (Germany)
  • 32. Physik-Institut der Universitaet Zuerich, Zurich (Switzerland)
  • 33. University of Montenegro, Faculty of Science, Podgorica (Montenegro)
  • 34. STFC, Rutherford Appleton Laboratory, Didcot, Oxfordshire (United Kingdom)
  • 35. INFN Roma 3 (Italy)
  • 36. Universita di Roma Tre, Dipartimento di Fisica, Rome (Italy)
  • 37. Institute for Nuclear Research and Nuclear Energy, Sofia (Bulgaria)
  • 38. Institut fuer Physik, TU Dortmund, Dortmund (Germany)

Description

Inclusive jet, dijet and trijet differential cross sections aremeasured in neutral current deep-inelastic scattering for exchanged boson virtualities 150 < Q2 < 15 000 GeV2 using the H1 detector at HERA. The data were taken in the years 2003 to 2007 and correspond to an integrated luminosity of 351 pb-1. Double differential jet cross sections are obtained using a regularised unfolding procedure. They are presented as a function of Q2 and the transverse momentum of the jet, PTjet, and as a function of Q2 and the proton's longitudinal momentum fraction, ξ, carried by the parton participating in the hard interaction. In addition normalised double differential jet cross sections aremeasured as the ratio of the jet cross sections to the inclusive neutral current cross sections in the respective Q2 bins of the jet measurements. Compared to earlier work, the measurements benefit from an improved reconstruction and calibration of the hadronic final state. The cross sections are compared to perturbative QCD calculations in next-to-leading order and are used to determine the running coupling and the value of the strong coupling constant as αs(MZ) = 0.1165 (8)exp (38)pdf,theo. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epjc/s10052-014-3223-6

Additional details

Identifiers

DOI
10.1140/epjc/s10052-014-3223-6;

Publishing Information

Journal Title
European physical journal. C, Particles and fields (Internet)
Journal Volume
75
Journal Issue
2
Journal Page Range
p. 1-48
ISSN
1434-6052

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
46041808
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ANTILEPTON-PROTON INTERACTIONS; COUPLING CONSTANTS; DEEP INELASTIC SCATTERING; DIFFERENTIAL CROSS SECTIONS; ELECTRON-PROTON INTERACTIONS; ELECTRONS; ELECTROPRODUCTION; EXPERIMENTAL DATA; GEV RANGE 100-1000; INCLUSIVE INTERACTIONS; INTEGRAL CROSS SECTIONS; JET MODEL; MULTIPLE PRODUCTION; NEUTRAL-CURRENT INTERACTIONS; PAIR PRODUCTION; POSITRONS; PROTONS; STRONG INTERACTIONS; TRANSVERSE MOMENTUM
Descriptors DEC
ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BARYONS; BASIC INTERACTIONS; CROSS SECTIONS; DATA; ELECTROMAGNETIC INTERACTIONS; ELECTRON-NUCLEON INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; INELASTIC SCATTERING; INFORMATION; INTERACTIONS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; LEPTON-PROTON INTERACTIONS; LEPTONS; LINEAR MOMENTUM; MATHEMATICAL MODELS; MATTER; NUCLEONS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; SCATTERING

Optional Information

Collaborations
H1 Collaboration