Differential cross sections of D*± photoproduction in ep collisions at HERA

ZEUS Collaboration; J. Repond; U. Mallik

doi:10.1016/S0370-2693(97)00422-X

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Differential cross sections of D*± photoproduction in ep collisions at HERA

Journal article

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Differential cross sections of D*± photoproduction in ep collisions at HERA

ZEUS Collaboration, J. Repond and U. Mallik

Physics letters. B, Vol.401(1), pp.192-206

1997

DOI: 10.1016/S0370-2693(97)00422-X

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Abstract

Inclusive photoproduction of D** in ep collisions at HERA has been measured with the ZEUS detector for photon-proton centre of mass energies in the range 115 < W < 280 GeV and photon virtuality Q2 < 4 GeV’. The cross section uep -, fix integrated over the kinematic region pf* > 3 GeV and - 1.5 < qD* cross sections as functions of py*, vD* < 1 .O is ( 10.6 f 1.7( stat.) +:I: (syst.) ) nb. Differential and W are given. The data are compared with two next-to-leading order perturbative QCD predictions. For a calculation using a massive charm scheme the predicted cross sections are smaller than the measured ones. A recent calculation using a massless charm scheme is in agreement with the dam.

Details

Title: Subtitle: Differential cross sections of D*± photoproduction in ep collisions at HERA
Creators: ZEUS Collaboration
J. Repond (Contributor)
U. Mallik (Contributor)
Resource Type: Journal article
Publication Details: Physics letters. B, Vol.401(1), pp.192-206
DOI: 10.1016/S0370-2693(97)00422-X
ISSN: 0370-2693
eISSN: 1873-2445
Publisher: Elsevier B.V
Language: English
Date published: 1997
Academic Unit: Physics and Astronomy
Record Identifier: 9984627209602771

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