New COMPASS results on the spin structure function $g_1^p$, and QCD fit

The COMPASS experiment at CERN SPS has taken data with a polarised muon beam scattering off a polarised NH 3 target in 2011. The beam energy has been increased to 200 GeV compared to 160 GeV in 2007 and thus, higher values of Q 2 and lower values of x are reached. From these data the longitudinal do...

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Detalles Bibliográficos
Autor principal: Wilfert, Malte
Lenguaje:eng
Publicado: SISSA 2014
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.22323/1.203.0206
http://cds.cern.ch/record/2025846
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author Wilfert, Malte
author_facet Wilfert, Malte
author_sort Wilfert, Malte
collection CERN
description The COMPASS experiment at CERN SPS has taken data with a polarised muon beam scattering off a polarised NH 3 target in 2011. The beam energy has been increased to 200 GeV compared to 160 GeV in 2007 and thus, higher values of Q 2 and lower values of x are reached. From these data the longitudinal double spin asymmetry A p 1 and the spin-dependent structure function g p 1 are extracted. The results are used in a NLO QCD fit to the world data to obtain the polarised parton distributions and also to test the Bjorken sum rule, connecting the integral of the non-singlet structure function with the ratio of the weak coupling constants
id oai-inspirehep.net-1327111
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
publisher SISSA
record_format invenio
spelling oai-inspirehep.net-13271112022-08-10T21:07:52Zdoi:10.22323/1.203.0206http://cds.cern.ch/record/2025846engWilfert, MalteNew COMPASS results on the spin structure function $g_1^p$, and QCD fitParticle Physics - ExperimentThe COMPASS experiment at CERN SPS has taken data with a polarised muon beam scattering off a polarised NH 3 target in 2011. The beam energy has been increased to 200 GeV compared to 160 GeV in 2007 and thus, higher values of Q 2 and lower values of x are reached. From these data the longitudinal double spin asymmetry A p 1 and the spin-dependent structure function g p 1 are extracted. The results are used in a NLO QCD fit to the world data to obtain the polarised parton distributions and also to test the Bjorken sum rule, connecting the integral of the non-singlet structure function with the ratio of the weak coupling constantsSISSAoai:inspirehep.net:13271112014
spellingShingle Particle Physics - Experiment
Wilfert, Malte
New COMPASS results on the spin structure function $g_1^p$, and QCD fit
title New COMPASS results on the spin structure function $g_1^p$, and QCD fit
title_full New COMPASS results on the spin structure function $g_1^p$, and QCD fit
title_fullStr New COMPASS results on the spin structure function $g_1^p$, and QCD fit
title_full_unstemmed New COMPASS results on the spin structure function $g_1^p$, and QCD fit
title_short New COMPASS results on the spin structure function $g_1^p$, and QCD fit
title_sort new compass results on the spin structure function $g_1^p$, and qcd fit
topic Particle Physics - Experiment
url https://dx.doi.org/10.22323/1.203.0206
http://cds.cern.ch/record/2025846
work_keys_str_mv AT wilfertmalte newcompassresultsonthespinstructurefunctiong1pandqcdfit

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