Simultaneous measurement of He(γ, pπ) yields and model implications

Forward-AngleH3e(e,e′Blomqvist1, Boeglin2, Böhm3 et al. 1996Phys. Rev. Lett.Self Cite11050View full textAdd to dashboardCite

“…Therefore, it was suggested by Lipkin and Lee [2] that the study of the s͑e, e 0 p 1 ͒͞s͑e, e 0 p 2 ͒ ratio in photoproduction and electroproduction of pions on 3 He is suited to examine the presence of D's in the ground state of nuclei. Recent experiments [3,4], prompted by this suggestion, set an upper limit of ഠ2% for this component, in qualitative agreement with current theoretical estimates [5][6][7]. Unfortunately, the quantitative modeling of the s͑p1͒͞s͑p 2 ͒ ratio by Lipkin and Lee cannot be applied since their model is still too crude; e.g., they did not take into account the pion pole term and all sorts of final state interactions [8].…”

A study of the Δ−-component of the wave function in light nuclei

“…[15,16] However, experimental searches for measurable consequences of ∆ components in the three-nucleon system using electroproduction have been inconclusive. [17,18,19] Recently, a new method for measuring the ∆ − component of the nuclear wave function has been suggested and has yielded results which are in agreement with the predictions of meson models of nuclear binding for range of nuclei. [20,21] This method is based on pion double charge exchange (DCX) which cannot occur in a single step if the pion interacts with nucleons.…”