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T: Fachverband Teilchenphysik

T 98: Soft QCD und PDF fits

T 98.2: Vortrag

Donnerstag, 12. März 2015, 17:00–17:15, K.11.20 (K5)

Transverse polarization of lambda(anti) hyperons from quasireal photoproduction on nuclei at HER MES — •Avetik Hayrapetyan, Irina Brodski, Erik Etzelmüller, Michael Düren, and Vitaly Zagrebalny — II Phys. Inst., JLU Gießen , Heinrich-Buff ring 16, 35392 Gießen

The transverse polarization of lambda(anti) hyperons was measured in inclusive quasireal photoproduction for various target nuclei ranging from hydrogen to xenon. These data were taken at the HERMES Experiment at HERA/DESY using the 27.6 GeV lepton beam. They are compared to results from previous measurements of the HERMES experiment on hydrogen (H) and deuteron (D) targets. In comparison with earlier measurement a new improved track-fitting algorithm has been used leading to better vertex and momentum resolution. The HERMES data complement extensive transverse polarization studies of hyperons, using hadron beams.