10.3204/DESY-PROC-2012-02/50
Bacchetta, Alessandro
Alessandro
Bacchetta
Radici, Marco
Marco
Radici
Constraining quark angular momentum with the Sivers function.
Deutsches Elektronen-Synchrotron, DESY, Hamburg
2013
ConferencePaper
Physics
2013
en
Abstract
Proc. of DIS 2012, 971-974; DESY
Currently, the best way to determine quark total angular momentum
requires the knowledge of the generalized parton distribution $E$
in the forward limit. We present the results of a recent work where
we assumed a connection between this function and the Sivers transverse-momentum
distribution. Using this assumption, we fitted at the same time
nucleon anomalous magnetic moments and semi-inclusive single-spin
asymmetries. This allowed us to give an estimate of the total angular
momentum carried by each quark flavor.
Proc. of DIS 2012, 971 - 974; DESY-PROC-2012-02; ISSN 1435-8077