Recent COMPASS results on transverse spin asymmetries in SIDIS.

28 Apr 2015, 16:15
25m
BALLROOM EAST ()

BALLROOM EAST

WG6 Spin Physics WG6 Spin Physics

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

Primary author

Mr giulio sbrizzai (Trieste University and INFN)

Presentation Materials