What is the impact of using complex words on the paper acceptance probability? Oppenheimer, Daniel M. "Consequences of erudite vernacular utilized irrespective of necessity: Problems with using long words needlessly." Applied Cognitive Psychology 20, no. 2 (2006): 139-156. looked at the impact of using complex words on the graduate admission probability.

Is there any research/study/survey that looked at the impact of using complex words on the paper acceptance probability?

I am most interested in the field of computer science, and English-speaking venues.
I cannot reply directly to your question on complex words, but it appears that complex (long) titles are associated with fewer citations (see Deng). So, you might extrapolate that complex words are going to decrease the likelihood of citations and, further extrapolating, possibly also of acceptance.