American Physical Society and The European Organization for Nuclear Research have formed a partnership to make CERN-authored articles published in APS journals open access.
Here's an excerpt from the press release:
Articles in APS' Physical Review Letters, Physical Review D, and Physical Review C in 2015 and 2016 will be covered by this agreement.
Thanks to this partnership, articles will be available free of charge for everyone to read. Copyright will remain with the authors and permissive Creative Commons CC-BY licences will allow re-use of the information (e.g. in books, review articles, conference proceedings and teaching material) as well as text- and data-mining applications.