# $(0,2)$ worldsheet SUSY implies ${\cal N}=1$ spacetime SUSY (reference request)

In [1] they write that

"Boucher et al. [14] found quite generally that $$(0, 2)$$ world-sheet SUSY ensures the existence of $$N = 1$$ spacetime SUSY."

But this reference "[14]" they cite just says: "W. Boucher, D. Friedan, A. Kent, S.H. Shenker and E. Witten, in preparation". I did not find a paper with these authors, but it is hard without knowing the title or the magazine/journal.

Does anyone know what paper they are referring to?

[1] Banks, Thomas, et al. "Phenomenology and conformal field theory or can string theory predict the weak mixing angle?." Nuclear Physics B 299.3 (1988): 613-626.

• FWIW, googling reveals that other references refer to the sought-for paper [14] as either in preparation or unpublished, so the preprint probably exists but is unpublished. – Qmechanic Oct 1 '19 at 15:24