Speaker
Description
The study of the tensor-polarized structures can help us reveal the internal structure of spin-1 hadrons. For example, the spin-1 deuteron is often considered as a loosely bound system of proton and neutron, and this is known as the standard model of the deuteron. In 2005, the HERMES collaboration measured the tensor-polarized PDF $f_{1LL}$ of the deuteron, but the experimental results are significantly larger than the theoretical predictions based on the standard model. This may suggest that there could be non-nucleonic structures in deuteron. To solve this puzzle, the tensor-polarized PDFs of deuteron will be accurately measured at Jefferson Lab and Fermilab in the United States, and at NICA in Russia. In this presentation, we focus on the tensor-polarized PDFs, FFs, and TMDs of spin-1 hadrons. We present theoretical relations between these distributions, which should be helpful for the future extraction of tensor-polarized distributions from experimental measurements. In addition, the higher twist corrections are also discussed for the reactions where spin-1 hardons are involved.
