Quasielastic 40Ca(e,e') reaction in the transverse channel: Nuclear structure effects

We present a microscopic calculation of the transverse response function for the 40Ca(e,e') reaction in the quasielastic domain. Our results clearly demonstrate the necessity of including RPA correlations if one wants to describe correctly both position and shape of the quasielastic peak. Building upon the RPA results, we then discuss the importance of the 2p-2h background, which confirms itself to be the dominant mechanism responsible for achieving agreement between theory and experiment at the peak and in the higher energy region. Finally, the results are discussed in the context of the latest relativistic calculations and experimental work