Exploring Electromagnetic Field Effects and Constraining Transport Parameters of QGP using STAR BES-II data

Heavy-ion collisions undergo various stages in their evolution and it iscrucial to disentangle the initial- and final-stage effects. In this work, wereport measurements of two types of observables: (i) charge-dependent directedflow ($\Delta v_1$), which is sensitive to the initial ultra-strongelectromagnetic fields, and (ii) flow correlations, such as $r_n (\eta)$ whichis sensitive to the initial longitudinal de-correlation, and correlations amongflow harmonics. These measurements contribute to constraining the initial stateof the collisions, and through a comprehensive beam energy scan, we gainsignificant insights into the system evolution in the presence of initialspatial asymmetry and electromagnetic fields.