Joint 20th International Workshop on Hadron Structure and Spectroscopy and 5th workshop on Correlations in Partonic and Hadronic Interactions

New measurement of transverse spin effects in hadron production from muon-deuteron semi-inclusive DIS at COMPASS

4 Oct 2024, 11:05

15m

"Pomegranate" hall (Ramada Hotel & Suites by Wyndham, Yerevan, Armenia)

Friday Morning

Speaker

Siranush Asatryan (A.Alikhanyan National Science Laboratory (AM))

Description

One of the main objectives of extensive physics program of COMPASS experiment has been to conduct measurements of target-spin asymmetries in semi-inclusive (di-)hadron production in Deep Inelastic Scattering of high-energy muons off polarized targets. In 2022, the latest semi-inclusive DIS measurements were performed using a transversely polarized deuteron target and a 160 GeV/c muon beam. These new measurements complement existing data obtained with transversely polarized proton targets, playing a key role in constraining the d-quark transversity and Sivers functions.
This talk will present initial results based on approximately two-thirds of the newly collected 2022 data.

Presentation materials

Asatryan_IWHSS_24.pdf