A direct test of perturbative QCD at small x

We show that recent data from HERA on the proton structure function F_2 at small x and large Q^2 provide a direct confirmation of the double asymptotic scaling prediction of perturbative QCD. A linear rise of \ln F_2 with the scaling variable \sigma is observed throughout the kinematic region probed...

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Detalles Bibliográficos
Autores principales: Ball, Richard D., Forte, Stefano
Lenguaje:eng
Publicado: 1994
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(94)00956-2
http://cds.cern.ch/record/265334
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author Ball, Richard D.
Forte, Stefano
author_facet Ball, Richard D.
Forte, Stefano
author_sort Ball, Richard D.
collection CERN
description We show that recent data from HERA on the proton structure function F_2 at small x and large Q^2 provide a direct confirmation of the double asymptotic scaling prediction of perturbative QCD. A linear rise of \ln F_2 with the scaling variable \sigma is observed throughout the kinematic region probed at HERA, and the measured slope is in excellent agreement with the QCD prediction. This provides a direct determination of the leading coefficient of the beta function. At large values of the scaling variable \rho the data display a small but statistically significant scaling violation.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1994
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spelling cern-2653342022-08-13T02:14:58Zdoi:10.1016/0370-2693(94)00956-2http://cds.cern.ch/record/265334engBall, Richard D.Forte, StefanoA direct test of perturbative QCD at small xParticle Physics - PhenomenologyWe show that recent data from HERA on the proton structure function F_2 at small x and large Q^2 provide a direct confirmation of the double asymptotic scaling prediction of perturbative QCD. A linear rise of \ln F_2 with the scaling variable \sigma is observed throughout the kinematic region probed at HERA, and the measured slope is in excellent agreement with the QCD prediction. This provides a direct determination of the leading coefficient of the beta function. At large values of the scaling variable \rho the data display a small but statistically significant scaling violation.We show that recent data from HERA on the proton structure function $F_2$ at small $x$ and large $Q~2$ provide a direct confirmation of the double asymptotic scaling prediction of perturbative QCD. A linear rise of $\ln F_2$ with the scaling variable $\sigma$ is observed throughout the kinematic region probed at HERA, and the measured slope is in excellent agreement with the QCD prediction. This provides a direct determination of the leading coefficient of the beta function. At large values of the scaling variable $\rho$ the data display a small but statistically significant scaling violation.We show that recent data from HERA on the proton structure function F 2 at small x and large Q 2 provide a direct confirmation of the double asymptotic scaling prediction of perturbative QCD. A linear rise of ln F 2 with the scaling variable σ is observed throughout the kinematic region probed at HERA, and the measured slope is in excellent agreement with the QCD prediction. This provides a direct determination of the leading coefficient of the beta function. At large values of the scaling variable ϱ the data display a small but statistically significant scaling violation.hep-ph/9406385CERN-TH-7331-94CERN-TH-7331-94oai:cds.cern.ch:2653341994
spellingShingle Particle Physics - Phenomenology
Ball, Richard D.
Forte, Stefano
A direct test of perturbative QCD at small x
title A direct test of perturbative QCD at small x
title_full A direct test of perturbative QCD at small x
title_fullStr A direct test of perturbative QCD at small x
title_full_unstemmed A direct test of perturbative QCD at small x
title_short A direct test of perturbative QCD at small x
title_sort direct test of perturbative qcd at small x
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0370-2693(94)00956-2
http://cds.cern.ch/record/265334
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AT fortestefano adirecttestofperturbativeqcdatsmallx
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AT fortestefano directtestofperturbativeqcdatsmallx

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