Measurement of D*± meson production in e±p scattering at low Q2

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Erscheinungsjahr:
2007
Medientyp:
Text
Schlagworte:
  • Physics
  • Physics
Beschreibung:
  • The production of D* ± (2010) mesons in e± p scattering in the range of exchanged photon virtuality 0.05 <Q2 <0.7   GeV2 has been measured with the ZEUS detector at HERA using an integrated luminosity of 82 pb-1. The decay channels D* + → D0 π+ with D0 → K- π+ and corresponding antiparticle decay were used to identify D* mesons and the ZEUS beampipe calorimeter was used to identify the scattered electron. Differential D* cross sections as functions of Q2, inelasticity, y, transverse momentum of the D* meson, pT (D*), and pseudorapidity of the D* meson, η (D*), have been measured in the kinematic region 0.02 <y <0.85, 1.5 <pT (D*) <9.0   GeV and | η (D*) | <1.5. The measured differential cross sections are in agreement with two different NLO QCD calculations. The cross sections are also compared to previous ZEUS measurements in the photoproduction and DIS regimes. © 2007 Elsevier B.V. All rights reserved.
Lizenz:
  • info:eu-repo/semantics/closedAccess
Quellsystem:
Forschungsinformationssystem der UHH
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oai:www.edit.fis.uni-hamburg.de:publications/bb34d4fa-eae3-4f62-9daf-a37eaea7949d