XXVIII International Workshop on Deep-Inelastic Scattering and Related Subjects

Transverse spin asymmetries for inclusive ρ0 production in SIDIS at COMPASS

15 Apr 2021, 12:51

18m

Virtual (Stony Brook, NY)

Contributed Talk Spin Physics Spin Physics

Speaker

Albi Kerbizi (INFN, Trieste Section)

Description

Studying the partonic and spin structure of the nucleon via Semi-Inclusive measurements of DIS (SIDIS) is one of the most important objectives of the COMPASS experiment (CERN, SPS). Nucleon spin (in)dependent azimuthal asymmetries accessible in single-hadron and hadron-pair production in SIDIS encode information on both the partonic structure of the nucleon and the fragmentation process. Production of vector mesons in SIDIS is a particularly interesting channel to study the polarized fragmentation and related phenomena. In this talk preliminary COMPASS results for the first ever measurement of inclusive ${\rho }^0$ transverse-spin asymmetries will be shown for the first time.
The analysis is based on the data-set collected by COMPASS in 2010 using a 160 GeV/c ${\mu }^{+}$ beam and a transversely polarized $N{H}_3$ target.
The asymmetries are extracted as function of Bjorken-x, total transverse momentum of the hadron pair and the energy fraction carried by the pair.

Presentation materials

Kerbizi_DIS2021.pdf

Youtube Link