Abstract
The HERMES experiment has measured the transverse polarization of and hyperons produced inclusively in quasireal photoproduction at a positron beam energy of 27.6 GeV. The transverse polarization of the hyperon is found to be positive while the observed polarization is compatible with zero. The values averaged over the kinematic acceptance of HERMES are and for and , respectively. The dependences of and on the fraction of the beam’s light-cone momentum carried by the hyperon and on the hyperon’s transverse momentum were investigated. The measured polarization rises linearly with and exhibits a different behavior for low and high values of , which approximately correspond to the backward and forward regions in the center-of-mass frame of the reaction.
- Received 25 April 2007
DOI:https://doi.org/10.1103/PhysRevD.76.092008
©2007 American Physical Society