Speaker
Description
Spin is a unique probe for unraveling the internal structure and QCD dynamics of nucleons. One of the main questions of modern nuclear physics is how the spin of the proton originates from its quark, anti-quark, and gluon constituents and their dynamics. The EIC, being the first polarized electron-proton collider, will venture into unexplored areas in spin physics, utilizing deep inelastic scattering (DIS) as a probe of the proton's internal structure.
Apart from probing the quark sector, the EIC's broad range of $Q^2$ will allow for the investigation of scaling violations in the $g_1$ structure function, providing substantial constraints on the gluon helicity down to momentum fractions of about $x = 10^{−4}$. Additionally, the semi-inclusive DIS measurements at the EIC that detect pions and kaons, in addition to the scattered electron, will significantly enhance access to sea quark helicities compared to inclusive DIS measurements.
In my talk, I will present the perspectives on the longitudinal spin structure of the proton from the EIC, including selected aspects of the ePIC detector crucial in achieving this physics goal.
