NLO QCD method of the polarized semiinclusive DIS data analysis
نویسندگان
چکیده
منابع مشابه
Polarized parton distributions from NLO QCD analysis of world DIS and SIDIS data
The combined analysis of polarized DIS and SIDIS data is performed in NLO QCD. The new parametrization on polarized PDFs is constructed. The uncertainties on PDFs and their first moments are estimated applying the modified Hessian method. The especial attention is paid to the impact of novel SIDIS data on the polarized distributions of light sea and strange quarks. In particular, the important ...
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Method of polarized semi-inclusive deep inelastic scattering (SIDIS) data analysis in the next to leading order (NLO) QCD is developed. Within the method one first directly extracts in NLO few first truncated (available to measurement) Mellin moments of the quark helicity distributions. Second, using these moments as an input to the proposed modification of the Jacobi polynomial expansion metho...
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Measurements of the cross section σ(xIP , β,Q 2) for diffractive deep inelastic scattering (DIS) processes of the type ep → eXp by H1 at HERA have reached high precision [1]. Here, Q2 is the photon virtuality, xIP is the longitudinal momentum fraction of the diffractive exchange with respect to the proton and β = x/xIP is the exchange’s longitudinal momentum fraction of the quark which couples ...
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It is proposed the modification of the Jacobi polynomial expansion method (MJEM) which is based on the application of the truncated moments instead of the full ones. This allows to reconstruct with a high precision the local quark helicity distributions even for the narrow accessible for measurement Bjorken x region using as an input only four first moments extracted from the data in NLO QCD. I...
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We have carried out a NLO analysis of the world data on polarized DIS in the MS scheme. We have studied two models of the parametrizations of the input parton densities, the first due to Brodsky, Burkhardt and Schmidt (BBS) which gives a simultaneous parametrization for both the polarized and unpolarized densities and in which the counting rules are strictly imposed, the second in which the inp...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2006
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.73.094026