Valence Quarks Polarization from COMPASS
A first evaluation of the polarized valence quark distribution $\Delta u_v(x)+\Delta d_v(x)$ from the COMPASS experiment (CERN/SPS) is presented. The data were collected by COMPASS in the years 2002--2004 using a 160 GeV polarized muon beam scattered off a large polarized $^6$LiD target and cover th...
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Lenguaje: | eng |
Publicado: |
2007
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Acceso en línea: | https://dx.doi.org/10.3204/proc07-01/88 http://cds.cern.ch/record/1031968 |
Sumario: | A first evaluation of the polarized valence quark distribution $\Delta u_v(x)+\Delta d_v(x)$ from the COMPASS experiment (CERN/SPS) is presented. The data were collected by COMPASS in the years 2002--2004 using a 160 GeV polarized muon beam scattered off a large polarized $^6$LiD target and cover the range $1< Q^2 < 100$ GeV$^2$ and $0.006<x<0.7$. The analysis is based on the difference asymmetry, $A^{h^+ - h^-}$, for hadrons of opposite charges, which gives a direct access to the polarization of valence quarks. |
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