Abstract: | Measuring the polarizations of quarks produced in new physics processes could provide crucial information about the new physics Lagrangian. The polarizations of heavy quarks (b and c) are expected to be largely preserved in the lightest baryons they hadronize into, Lambda_b and Lambda_c, respectively. Furthermore, it is known experimentally that s-quark polarization is preserved as well, in Lambda baryons. We propose how ATLAS and CMS can measure polarizations of b, c and s quarks using certain decays of the corresponding baryons. For calibrating these measurements, we suggest to use ttbar and W+c samples. We estimate that the Run 2 dataset will suffice for measuring the quark polarizations in these samples with precisions of order 10%. |