Speaker
Description
In this talk I will present the results of the calculations of the spin-dependent structure functions (SSFs) of the 3He nucleus.
These quantities parametrize the hadronic tensor entering the deep inelastic scattering cross-section involving polarized beams and targets. In particular, the SSFs encode
relevant information on the spin structure of the target. In this analysis we calculate the 3He SSFs [1] within the relativistic Light-Front approach successfully tested to evaluate the 3He EMC effect [2]. In this framework, the calculation fulfills Poincaré covariance, macroscopic locality, number of particles and momentum sum rules.
As nuclear input use has been made of the realistic 3He wave-functions obtained from
the phenomenological Av18 + UIX potential. Moreover, a procedure to extract the neutron SSFs from those of the 3He and the proton is also proposed. Finally, I show that the calculations here discussed are in excellent agreement with the present data for the 3He SSFs.
Hence, this analysis could be very relevant in particular for the future experimental program of, e.g., the Electron ion Collider, where processes off polarized 3He targets are planned.
REFERENCES
[1] E. Proietti, F. Fornetti, E. Pace, M. Rinaldi, G. Salmè and S. Scopetta, in preparation
[2] E. Pace, M. Rinaldi, G. Salme', S. Scopetta, PLB 839 (2023) 137810
