Probing for high momentum protons in ${}^4$He via the ${}^{4}He(e,e^{\prime }p)X$ reaction

Abstract

Experimental cross sections for the ${}^{4}He(e,e^{\prime }p)X$ reaction up to a missing momentum of 0.632 GeV/$c$ at $x_B=1.24$ and $Q^2$=2(GeV/$c$)${}^2$ are reported. The data are compared to Relativistic Distorted Wave Impulse Approximation(RDWIA) calculations for ${}^{4}He(e,e^{\prime }p{)}^{3}H$ channel. Significantly more events in the triton mass region are measured for $p_m$$>$0.45 GeV/$c$ than are predicted by the theoretical model, suggesting that the effects of initial-state multi-nucleon correlations are stronger than expected by the RDWIA model.

Submitted to PRC