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Recent gluon polarization results from COMPASS
One of the main goals of the COMPASS experiment at CERN is the measurement of the gluon polarization in the nucleon, $\Delta G$, by scattering of 160 GeV/c polarized muons on a polarized $^{6}$LiD target. This quantity is experimentally accessible via the photon-gluon fusion process, tagged either b...
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Lenguaje: | eng |
Publicado: |
2007
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/j.nuclphysbps.2006.11.088 http://cds.cern.ch/record/1500094 |
Sumario: | One of the main goals of the COMPASS experiment at CERN is the measurement of the gluon polarization in the nucleon, $\Delta G$, by scattering of 160 GeV/c polarized muons on a polarized $^{6}$LiD target. This quantity is experimentally accessible via the photon-gluon fusion process, tagged either by charmed mesons production or by high $p_{T}$ hadron pairs production. The status of these two analyses is presented. Preliminary results obtained from the 2002/03 data samples on the $D^{0}$ and the $D^{*\pm}$ channels are shown. The high $p_{T}$ hadron pairs, produced at $Q^{2}\lessgtr$ 1 (GeV/c)$^{2}$, were also analysed, and the measured $\Delta G/G$ values are presented here. |
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