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arXiv · 0707.1373

Polarized Parton Densities and Higher Twist in the Light of the Recent CLAS and COMPASS data

Elliot Leader·Aleksander V. Sidorov·Dimiter B. Stamenov
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Abstract

The impact of the recent very precise CLAS and COMPASS g_1/F_1 data on polarized parton densities and higher twist effects is discussed. We demonstrate that the low Q^2 CLAS data improve essentially our knowledge of higher twist corrections to the spin structure function g1, while the large Q^2 COMPASS data influence mainly the strange quark and gluon polarizations which slightly decrease. We find also that the present inclusive DIS data cannot rule out a negative polarized and changing in sign gluon densities.

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Elliot Leader, Aleksander V. Sidorov, Dimiter B. Stamenov. 2007-07-12. Polarized Parton Densities and Higher Twist in the Light of the Recent CLAS and COMPASS data. https://arxiv.org/abs/0707.1373

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