The Planck collaboration has an inimitable way of releasing important new results, they like to do it in French (see here for instance). Tonight a French Planck website contains the long-awaited news of the results from the BICEP2/Keck/Planck collaboration to reanalyze the BICEP2 data on polarized B-modes, in a way that allows proper estimation of the contribution of dust. The bottom line is that the BICEP2 claims of seeing a primordial r=.16-.20 that got a huge amount of media attention last year have been shot down. The new analysis says that r is less than .13. I don’t see a paper yet, rumor is that the paper will be on the arXiv Monday night.
My understanding is that full polarization results from Planck’s own data are still not quite ready, as has been the case for quite a while now.
Hat tip for this news to Steve (retired LLNL physicist). Thanks Steve!
Update: The Planck collaboration now has information available about this (in English!). An NSF version is here, NBC News here. It still looks like we’ll have to wait until next week for the paper, which has been submitted to PRL.
Update: The paper is now available here.