Measurement of the Hadronic Photon Structure Function F_2^gamma at LEP2

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The hadronic structure function of the photon <alternatives xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oasis="http://docs.oasis-open.org/ns/oasis-exchange/table"><span class="NLM_inline-graphi...

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Autor principal: Taylor, R.J.
Lenguaje:eng
Publicado: WSP 2001
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1142/9789812777157_0001
http://cds.cern.ch/record/522968
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author Taylor, R.J.
author_facet Taylor, R.J.
author_sort Taylor, R.J.
collection CERN
description The hadronic structure function of the photon <alternatives xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oasis="http://docs.oasis-open.org/ns/oasis-exchange/table"><span class="NLM_inline-graphic"><img src="/na101/home/literatum/publisher/wspc/books/content/books/2002/5011/9789812777157_0001/20170712/images/medium/9789812777157_0001m002.gif" alt="" /></span></alternatives> is measured as a function of Bjorken x and of the factorisation scale Q<sup>2</sup> using data taken by the OPAL detector at LEP. Previous OPAL measurements of the x dependence of <alternatives xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oasis="http://docs.oasis-open.org/ns/oasis-exchange/table"><span class="NLM_inline-graphic"><img src="/na101/home/literatum/publisher/wspc/books/content/books/2002/5011/9789812777157_0001/20170712/images/medium/9789812777157_0001m003.gif" alt="" /></span></alternatives> are extended to an average Q<sup>2</sup> of 767 GeV<sup>2</sup>. The Q<sup>2</sup> evolution of <alternatives xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oasis="http://docs.oasis-open.org/ns/oasis-exchange/table"><span class="NLM_inline-graphic"><img src="/na101/home/literatum/publisher/wspc/books/content/books/2002/5011/9789812777157_0001/20170712/images/medium/9789812777157_0001m004.gif" alt="" /></span></alternatives> is studied for 11.9 < 〈Q<sup>2</sup>〉 < 1051 <span class="roman">GeV</span><sup>2</sup>. As predicted by QCD, the data show positive scaling violations in <alternatives xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oasis="http://docs.oasis-open.org/ns/oasis-exchange/table"><span class="NLM_inline-graphic"><img src="/na101/home/literatum/publisher/wspc/books/content/books/2002/5011/9789812777157_0001/20170712/images/medium/9789812777157_0001m005.gif" alt="" /></span></alternatives>. Several parameterisations of <alternatives xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oasis="http://docs.oasis-open.org/ns/oasis-exchange/table"><span class="NLM_inline-graphic"><img src="/na101/home/literatum/publisher/wspc/books/content/books/2002/5011/9789812777157_0001/20170712/images/medium/9789812777157_0001m006.gif" alt="" /></span></alternatives> are in agreement with the measurements whereas the quark-parton model prediction fails to describe the data.
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spelling cern-5229682023-03-14T18:45:47Zdoi:10.1142/9789812777157_0001doi:10.1142/9789812777157_0001http://cds.cern.ch/record/522968engTaylor, R.J.Measurement of the Hadronic Photon Structure Function F_2^gamma at LEP2Particle Physics - ExperimentThe hadronic structure function of the photon <alternatives xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oasis="http://docs.oasis-open.org/ns/oasis-exchange/table"><span class="NLM_inline-graphic"><img src="/na101/home/literatum/publisher/wspc/books/content/books/2002/5011/9789812777157_0001/20170712/images/medium/9789812777157_0001m002.gif" alt="" /></span></alternatives> is measured as a function of Bjorken x and of the factorisation scale Q<sup>2</sup> using data taken by the OPAL detector at LEP. Previous OPAL measurements of the x dependence of <alternatives xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oasis="http://docs.oasis-open.org/ns/oasis-exchange/table"><span class="NLM_inline-graphic"><img src="/na101/home/literatum/publisher/wspc/books/content/books/2002/5011/9789812777157_0001/20170712/images/medium/9789812777157_0001m003.gif" alt="" /></span></alternatives> are extended to an average Q<sup>2</sup> of 767 GeV<sup>2</sup>. The Q<sup>2</sup> evolution of <alternatives xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oasis="http://docs.oasis-open.org/ns/oasis-exchange/table"><span class="NLM_inline-graphic"><img src="/na101/home/literatum/publisher/wspc/books/content/books/2002/5011/9789812777157_0001/20170712/images/medium/9789812777157_0001m004.gif" alt="" /></span></alternatives> is studied for 11.9 < 〈Q<sup>2</sup>〉 < 1051 <span class="roman">GeV</span><sup>2</sup>. As predicted by QCD, the data show positive scaling violations in <alternatives xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oasis="http://docs.oasis-open.org/ns/oasis-exchange/table"><span class="NLM_inline-graphic"><img src="/na101/home/literatum/publisher/wspc/books/content/books/2002/5011/9789812777157_0001/20170712/images/medium/9789812777157_0001m005.gif" alt="" /></span></alternatives>. Several parameterisations of <alternatives xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:oasis="http://docs.oasis-open.org/ns/oasis-exchange/table"><span class="NLM_inline-graphic"><img src="/na101/home/literatum/publisher/wspc/books/content/books/2002/5011/9789812777157_0001/20170712/images/medium/9789812777157_0001m006.gif" alt="" /></span></alternatives> are in agreement with the measurements whereas the quark-parton model prediction fails to describe the data.The hadronic structure function of the photon F_2^gamma is measured as a function of Bjorken x and of the factorisation scale Q^2 using data taken by the OPAL detector at LEP. Previous OPAL measurements of the x dependence of F_2^gamma are extended to an average Q^2 of 767 GeV^2. The Q^2 evolution of F_2^gamma is studied for average Q^2 between 11.9 and 1051 GeV^2. As predicted by QCD, the data show positive scaling violations in F_2^gamma. Several parameterisations of F_2^gamma are in agreement with the measurements whereas the quark-parton model prediction fails to describe the data.WSPhep-ex/0110024UCL-HEP-2001-03UCL-HEP-2001-03oai:cds.cern.ch:5229682001-10-15
spellingShingle Particle Physics - Experiment
Taylor, R.J.
Measurement of the Hadronic Photon Structure Function F_2^gamma at LEP2
title Measurement of the Hadronic Photon Structure Function F_2^gamma at LEP2
title_full Measurement of the Hadronic Photon Structure Function F_2^gamma at LEP2
title_fullStr Measurement of the Hadronic Photon Structure Function F_2^gamma at LEP2
title_full_unstemmed Measurement of the Hadronic Photon Structure Function F_2^gamma at LEP2
title_short Measurement of the Hadronic Photon Structure Function F_2^gamma at LEP2
title_sort measurement of the hadronic photon structure function f_2^gamma at lep2
topic Particle Physics - Experiment
url https://dx.doi.org/10.1142/9789812777157_0001
https://dx.doi.org/10.1142/9789812777157_0001
http://cds.cern.ch/record/522968
work_keys_str_mv AT taylorrj measurementofthehadronicphotonstructurefunctionf2gammaatlep2

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