English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Method of polarized semi-inclusive deep inelastic scattering (SIDIS) dataanalysis in the next to leading order (NLO) QCD is developed. Within the methodone first directly extracts in NLO few first truncated (available tomeasurement) Mellin moments of the quark helicity distributions. Second, usingthese moments as an input to the proposed modification of the Jacobi polynomialexpansion method (MJEM), one eventually reconstructs the local quark helicitydistributions themselves. All numerical tests demonstrate that MJEM allows usto reproduce with the high precision the input local distributions even insidethe narrow Bjorken $x$ region accessible for experiment. It is of importancethat only four first input moments are sufficient to achieve a good quality ofreconstruction. The application of the method to the simulated SIDIS data onthe pion production is considered. The obtained results encourage one that theproposed NLO method can be successfully applied to the SIDIS data analysis. Theanalysis of HERMES data on pion production is performed. To this end the piondifference asymmetries are constructed from the measured by HERMES standardsemi-inclusive spin asymmetries. The LO results of the valence distributionreconstruction are in a good accordance with the respective leading order SMCand HERMES results, while the NLO results are in agreement with the existingNLO parametrizations on these quantities

NLO QCD method of the polarized semiinclusive DIS data analysis