Semi-inclusive deep inelastic lepton scattering off complex nuclei

Abstract

It is shown that in semi-inclusive deep inelastic scattering (DIS) of electrons off a complex nucleus A, the detection, in coincidence with the scattered electron, of a nucleus (A − 1) in the ground state, as well as of a nucleon and a nucleus (A − 2), also in the ground state, may provide unique information on several long standing problems, such as : i) the nature and the relevance of the final state interaction in DIS; ii) the validity of the spectator mechanism in DIS; iii) the medium induced modifications of the nucleon structure function; iv) the origin of the EM C effect.

Final-state interactions in semi-inclusive deep inelastic scattering off the deuteron

“…A similar approximation is used for the FSI studies in semi-inclusive DIS scattering [1,[6][7][8][9][10][11] as well as for studies of color transparency phenomena in which the intermediate state represents an off-shell coherent composite system with reduced interaction cross section (see e.g. [13,[23][24][25][26][27][28]).…”

“…Thus in this respect FSI becomes very important part of the semi-inclusive DIS process. To quantify the effects of FSI in DIS, model calculations are needed and this has already resulted in the development of several theoretical approaches [1,[6][7][8][9][10][11][12].…”

Tagged spectator deep-inelastic scattering off the deuteron as a tool to study neutron structure

“…In the near future, the BONuS12 experiment will run [3] and the reaction is considered as a method to extract neutron structure at a future electron-ion collider [4]. In order to provide meaningful interpretations of the measured data, theoretical models that quantify the importance of the FSI in the reaction are needed [5][6][7][8][9][10]. The major difficulty in doing this is that one lacks detailed information about the composition and spacetime evolution of the hadronic system produced in the deep-inelastic scattering and how this changes as a function of Bjorken x and Q 2 .…”

Relativistic contributions to the deuteron photodisintegration in the Bethe-Salpeter formalism

“…So far applicability of the BS equation to reactions with the deuteron has been bound to: elastic electron-deuteron scattering [12], elastic pd-backward scattering [16], inclusive quasi-elastic electron-deuteron scattering [17,18] and description of the static properties of the deuteron [19,20]. The common feature of these processes is that the reaction amplitude in the impulse approximation is proportional to the averaging of current operator between deuteron states.…”