Soft Neutron Production in DIS: a Window to the Final State Interactions

Details Soft Neutron Production in DIS: a Window to the Final State Interactions Soft Neutron Production in DIS: a Window to the Final State Interactions

1998-06-29

arxiv.org/abs/nucl-th/9806099v1

Phys.Lett. B459 (1999) 37-42

Physics

Nuclear Physics

Nuclear Theory

14 pages, 4 figures

Scientific paper

10.1016/S0370-2693(99)00627-9

Recently E-665 reported the first measurement of soft ($E_n \le 10 $MeV) neutron production in deep inelastic scattering (DIS) off nuclei. We report the first theoretical analysis of the data. We find that the observed cross section can be quantitatively explained as due to the final state interactions (FSI) of low energy nucleons ($E_N \sim 200-400 MeV$) produced in the elementary $\mu N$ interactions. We argue that the data indicate strong a suppression of the FSI's of fast partons (hadrons) in DIS at high energies, and that studies of the soft neutron production would provide a new sensitive probe of the dynamics of FSI's in DIS both at fixed target energies and at the HERA $eA$ collider.

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