Measurement of D{plus-minus} and D{sup 0} production in deep Inelastic scattering using a lifetime tag at HERA.

Journal Article · Thu Oct 01 04:00:00 EDT 2009 · Eur. Phys. J. C

DOI:https://doi.org/10.1140/epjc/s10052-009-1088-x· OSTI ID:985629

Chekanov, S; Derrick, M; Magill, S; Musgrave, B; Repond, J; Yoshida, R; Nicholass, D; Collboration, ZEUS

The production of D{sup {+-}}- and D{sup 0}-mesons has been measured with the ZEUS detector at HERA using an integrated luminosity of 133.6 pb{sup -1}. The measurements cover the kinematic range 5 < Q{sup 2} < 1000 GeV{sup 2}, 0.02 < y < 0.7, 1.5 < p T{sup D} < 15 GeV and |{eta}{sup D}| < 1.6. Combinatorial background to the D-meson signals is reduced by using the ZEUS microvertex detector to reconstruct displaced secondary vertices. Production cross sections are compared with the predictions of next-to-leading-order QCD, which is found to describe the data well. Measurements are extrapolated to the full kinematic phase space in order to obtain the open-charm contribution, F{sub 2}{sup c{bar c}} to the proton structure function, F{sub 2}.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 985629
• Report Number(s): ANL-HEP-PR-09-4
• Journal Information: Eur. Phys. J. C, Journal Name: Eur. Phys. J. C Journal Issue: 2 ; Oct. 2009 Vol. 63; ISSN 1434-6044
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
DEEP INELASTIC SCATTERING
LIFETIME
LUMINOSITY
PHASE SPACE
PRODUCTION
PROTONS
QUANTUM CHROMODYNAMICS
STRUCTURE FUNCTIONS