Virginia Anderson’s chapter for the book Experimental Systems: Future Knowledge in Artistic Research (ed. Michael Schwab) is available as a version of record on her Academia.edu page. This chapter details some ways in which British experimental composers have used real scientific methods in their work, often with fictive materials or impossible conclusions. Composers include Cardew and the Scratch Orchestra, Gavin Bryars, and Christopher Hobbs.
You can find it here: https://www.academia.edu/4903150/Whatever_remains_however_improbable_British_experimental_music_and_experimental_systems_