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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present the first measurement of the gluon polarisation in the nucleonbased on the photon-gluon fusion process tagged by charmed meson production anddecay to charged K and pi. The data were collected in polarised muon scatteringoff a polarised deuteron target by the COMPASS collaboration at CERN during2002-2004. The result of this LO analysis is <Delta g/g>_x = -0.47 +- 0.44(stat) +- 0.15 (syst) at <x> ~= 0.11 and a scale mu^2 ~ 13 (GeV/c)^2.

Direct Measurement of the Gluon Polarisation in the Nucleon via Charmed Meson Production