Measurement of the polarization of the ${\rm Y}(1S)$ and ${\rm Y}(2S)$ states in $p\bar{p}$ collisions at $\sqrt{s}=$1.96 TeV

D0 Collaboration, V. M. Abazov

We present a study of the polarization of the ${\rm Y}(1S)$ and ${\rm Y}(2S)$ states using a $1.3$ fb${}^{-1}$ data sample collected by the D0 experiment in 2002--2006 during Run II of the Ferm…