Measurement of d Mmesons production in deep inelastic scattering at HERA.

Journal Article · Mon Jan 01 04:00:00 EST 2007 · J. High Energy Phys.

OSTI ID:953813

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

Charm production in deep inelastic scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 82 pb{sup -1}. Charm has been tagged by reconstructing D*+, D{sup 0}, D{sup +} and D{sup +}{sub s} (+ c.c.) charm mesons. The charm hadrons were measured in the kinematic range p{sub T}(D*+,D{sup 0}0, D{sup +}) > 3 GeV, p{sub T}(D{sup +}{sub s}) > 2 GeV and |{eta}(D)| < 1.6 for 1.5 < Q{sup 2} < 1000 GeV{sup 2} and 0.02 < y < 0.7. The production cross sections were used to extract charm fragmentation ratios and the fraction of c quarks hadronising into a particular charm meson in the kinematic range considered. The cross sections were compared to the predictions of next-to-leading-order QCD, and extrapolated to the full kinematic region in p{sub T}(D) and {eta}(D) in order to determine the open-charm contribution, F{sub 2}{sup c}{anti c}(x, Q{sup 2}), to the proton structure function F{sub 2}.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 953813
• Report Number(s): ANL-HEP-PR-07-29
• Journal Information: J. High Energy Phys., Journal Name: J. High Energy Phys. Journal Issue: 2007 Vol. 7; ISSN 1126-6708
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
C QUARKS
CROSS SECTIONS
D MESONS
DEEP INELASTIC SCATTERING
FRAGMENTATION
HADRONS
LUMINOSITY
MESONS
PRODUCTION
PROTONS
QUANTUM CHROMODYNAMICS
STRUCTURE FUNCTIONS