Di-hadron asymmetry and interplay between transversity induced asymmetries in hadron leptoproduction at COMPASS

16th Workshop on High Energy Spin Physics

Sbrizzai, Giulio^1

Trieste University, Physcics Departement, Via Valerio 2, Trieste

34127, Italy^1

关键词: Angular correlations;    Azimuthal asymmetries;    Fragmentation mechanism;    New results;    Phenomenological analysis;    Physical process;    Transversity;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/678/1/012021/pdf
DOI  :  10.1088/1742-6596/678/1/012021

来源: IOP

【 摘 要 】

New 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. A noticeable similarity between the Collins asymmetry and the dihadron asymmetry, already been observed and reported, triggered a more deep investigation on the angular correlations and the relevant kinematical variables. The resulting phenomenological analysis of the transversity induced asymmetries, presented in this talk, allows to establish quantitative relationships, providing strong indication that the underlying fragmentation mechanisms are all driven by a common physical process.