Speaker
Klaus Rith
(University of Eralngen-Nürnberg)
Description
Single-spin asymmetries were investigated in inclusive electroproduction
of charged pions and kaons from transversely polarized protons
at the HERMES experiment. The asymmetries were studied as a function of the azimuthal angle $\psi$ about the beam direction between the
target-spin direction and the hadron production plane, the transverse
hadron momentum $p_T$ relative to the direction of the incident beam,
and the Feynman variable $x_F$.
The $\sin\psi$ amplitudes are positive for $\pi^{+}$ and $K^{+}$, slightly
negative for $\pi^{-}$ and consistent with zero for $K^{-}$, with
particular $p_{T}$ but weak $x_{F}$ dependences.
Especially large asymmetries are observed for two small subsamples of
events, where also the scattered electron was recorded by the
spectrometer.
Primary author
Klaus Rith
(U)
