Lensing reconstruction from suborbital CMB polarization experiments and the effect of foregrounds

In this talk I will describe about the investigation we carried out on the possible impact of Galactic polarized dust emission on the detection of the lensing signal. This analysis is crucial for several ongoing and ground-based and balloon-borne CMB polarization experiments including ACTPol, SPTPol, EBEX and POLARBEAR, which will target the lensing signal in the next couple of years using measurements of CMB polarization in the frequency range 90-410 GHz. In particular our work focus on performing a case study of an EBEX-like experimental configuration which, owing to observing constraints, will most likely survey a region of sky where Galactic foregrounds in the form of polarized dust emission may be significant. I will briefly review the Hu and Okamoto quadratic estimator and describe our result which considers a possible multi-frequency cleaning of this foreground.