Single hadron transverse spin asymmetries from COMPASS
F. Bradamante
TL;DR
This paper reports the first measurements of Collins and Sivers asymmetries in deuteron semi-inclusive deep inelastic scattering at CERN, finding asymmetries compatible with zero for various hadrons, advancing understanding of transverse spin effects.
Contribution
First measurement of Collins and Sivers asymmetries for deuteron in semi-inclusive DIS at CERN, providing new data on transverse spin phenomena.
Findings
Asymmetries are small and compatible with zero within errors.
New results for charged pions and kaons are presented.
Advances understanding of transverse spin effects in nucleons.
Abstract
Transverse spin physics is an important part of the scientific programme of the COMPASS experiment at CERN. The analysis of the data taken with the target polarized orthogonally to the 160 GeV/c muon beam momentum has allowed to measure for the first time the Collins and Sivers asymmetries of the deuteron. Both for the positive and the negative hadrons produced in semi-inclusive DIS the measured asymmetries are small and, within errors, compatible with zero. New results for charged pions and kaons are presented here.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Particle Accelerators and Free-Electron Lasers · Particle Detector Development and Performance