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Charm production in deep-inelastic e$\gamma$ scattering to next-to-leading order in QCD
We discuss the calculation of F_2^{\gamma}({\rm charm}) to next-to-leading order (NLO) in QCD, including contributions from both hadronlike and pointlike photons. We show that the former dominates strongly below x\simeq 0.01, and the latter above this value. This fact makes F_2^{\gamma}({\rm charm})...
Autores principales: | , |
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Lenguaje: | eng |
Publicado: |
1995
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/281331 |
_version_ | 1780887981428572160 |
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author | Laenen, Eric Riemersma, Stephan |
author_facet | Laenen, Eric Riemersma, Stephan |
author_sort | Laenen, Eric |
collection | CERN |
description | We discuss the calculation of F_2^{\gamma}({\rm charm}) to next-to-leading order (NLO) in QCD, including contributions from both hadronlike and pointlike photons. We show that the former dominates strongly below x\simeq 0.01, and the latter above this value. This fact makes F_2^{\gamma}({\rm charm}) for x \geq 0.01 calculable, whereas for x \leq 0.01 it serves to constrain the small-x gluon density in the photon. Both ranges in x are accessible at LEP2. Theoretical uncertainties are well under control. We present rates for single-tag events for the process for e^+e^- \rightarrow e^+e^- c X for LEP2. Although these event rates are small, we believe a measurement of F_2^{\gamma}({\rm charm}) is feasible. |
id | cern-281331 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 1995 |
record_format | invenio |
spelling | cern-2813312020-07-23T02:50:33Zhttp://cds.cern.ch/record/281331engLaenen, EricRiemersma, StephanCharm production in deep-inelastic e$\gamma$ scattering to next-to-leading order in QCDParticle Physics - PhenomenologyWe discuss the calculation of F_2^{\gamma}({\rm charm}) to next-to-leading order (NLO) in QCD, including contributions from both hadronlike and pointlike photons. We show that the former dominates strongly below x\simeq 0.01, and the latter above this value. This fact makes F_2^{\gamma}({\rm charm}) for x \geq 0.01 calculable, whereas for x \leq 0.01 it serves to constrain the small-x gluon density in the photon. Both ranges in x are accessible at LEP2. Theoretical uncertainties are well under control. We present rates for single-tag events for the process for e^+e^- \rightarrow e^+e^- c X for LEP2. Although these event rates are small, we believe a measurement of F_2^{\gamma}({\rm charm}) is feasible.We discuss the calculation of $F_2~{\gamma}({\rm charm})$ to next-to-leading order (NLO) in QCD, including contributions from both hadronlike and pointlike photons. We show that the former dominates strongly below $x\simeq 0.01$, and the latter above this value. This fact makes $F_2~{\gamma}({\rm charm})$ for $x \geq 0.01$ calculable, whereas for $x \leq 0.01$ it serves to constrain the small-$x$ gluon density in the photon. Both ranges in $x$ are accessible at LEP2. Theoretical uncertainties are well under control. We present rates for single-tag events for the process for $e~+e~- \rightarrow e~+e~- c X$ for LEP2. Although these event rates are small, we believe a measurement of $F_2~{\gamma}({\rm charm})$ is feasible.hep-ph/9505230CERN-TH-95-103SMU-HEP-95-02CERN-TH-95-103SMU-HEP-95-02oai:cds.cern.ch:2813311995-05-04 |
spellingShingle | Particle Physics - Phenomenology Laenen, Eric Riemersma, Stephan Charm production in deep-inelastic e$\gamma$ scattering to next-to-leading order in QCD |
title | Charm production in deep-inelastic e$\gamma$ scattering to next-to-leading order in QCD |
title_full | Charm production in deep-inelastic e$\gamma$ scattering to next-to-leading order in QCD |
title_fullStr | Charm production in deep-inelastic e$\gamma$ scattering to next-to-leading order in QCD |
title_full_unstemmed | Charm production in deep-inelastic e$\gamma$ scattering to next-to-leading order in QCD |
title_short | Charm production in deep-inelastic e$\gamma$ scattering to next-to-leading order in QCD |
title_sort | charm production in deep-inelastic e$\gamma$ scattering to next-to-leading order in qcd |
topic | Particle Physics - Phenomenology |
url | http://cds.cern.ch/record/281331 |
work_keys_str_mv | AT laeneneric charmproductionindeepinelasticegammascatteringtonexttoleadingorderinqcd AT riemersmastephan charmproductionindeepinelasticegammascatteringtonexttoleadingorderinqcd |