Probing for high momentum protons in $^4$He via the $^4He(e,e'p)X$ reaction
nucl-ex
/ Authors
S. Iqbal, F. Benmokhtar, M. Ivanov, N. See, K. Aniol, D. W. Higinbotham, C. Boyd, A. Gadsby, S. Gilad, A. Saha
and 100 more authors
J. M. Udias, J. S. Goodwill, D. Finton, A. Boyer, Z. Ye, P. Solvignon, P. Aguilera, Z. Ahmed, H. Albataineh, K. Allada, B. Anderson, D. Anez, J. Annand, J. Arrington, T. Averett, H. Baghdasaryan, X. Bai, A. Beck, S. Beck, V. Bellini, A. Camsonne, C. Chen, J. -P. Chen, K. Chirapatpimol
/ Abstract
Experimental cross sections for the $^4He(e,e'p)X$ 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 $^4He(e,e'p)^3H$ 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.