Speaker
Mr
giulio sbrizzai
(Trieste University and INFN)
Description
Recent results on the transverse spin azimuthal asymmetries in
semi-inclusive DIS reactions extracted by the COMPASS Collaboration
from the data collected with a transversely polarised proton target
are presented.
In particular, the interesting kinematical dependencies shown by the Collins
and Sivers asymmetries have been further investigated in a multi-dimensional analysis in x, Q^2, z and p_T.
Moreover, the similarity between the Collins asymmetries and the dihadron asymmetries recently observed by COMPASS has been further investigated for an event sample
containing at least a pair of oppositely charged hadrons. From the
dependence of the asymmetries on the azimuthal angle between the two
detected hadrons a quantitative relation between the two asymmetries is
derived, confirming the original suggestion that a common physical
mechanism underlies the two mechanisms
Author
Mr
giulio sbrizzai
(Trieste University and INFN)
