Mix and mass: teasing out neutrino transformations

NOvA favors the “normal hierarchy” and large CP violation, but there is not enough data yet to be sure.

http://news.fnal.gov/2016/07/mix-mass-teasing-neutrino-transformations/, by Fernanda Psihas (a graduate student at Indiana University)

Importance of multivariate analysis

These physicists were responsible for this analysis. From left: Giorgio Chiarelli, Sandra Leone and Federico Sforza, all from INFN (University of Pisa).

Disentangling signal from background in the CDF Higgs Boson data.

http://news.fnal.gov/2016/07/importance-multivariate-analysis/, by Andy Beretvas and Giorgio Chiarelli

Dark matter search with bubble chambers

This is an electronic image of a typical microscopic quartz particulate found during the investigation of the active mass of the PICO-2L detector after its first run. The image was taken using an EDS-SEM (scanning electron microscopy with X-ray microanalysis). Such particulate contamination was thought to be the cause for the anomalous background, and a profound effort went into its elimination (and suppression of its production) for the follow up PICO-2L WIMP-search run.

Presented here is a description of the PICO experiment, which has achieved one of the world’s best exclusions for the detection of Weakly-Interacting Massive Particles (WIMPs): the leading candidate for the Dark Matter particle.

This podcast is a little longer than usual: 8 minutes, 45 seconds.

http://news.fnal.gov/2016/07/dark-matter-search-bubble-chambers/, by Chanpreet Amole: a Ph.D. candidate at Queen’s University in Canada.

Getting a feel (and a taste) for neutrinos

Using an extra dimension in the analysis of neutrino events to have a close look at what’s happening.

http://news.fnal.gov/2016/07/getting-feel-taste-neutrinos/, by David Coplowe, a physicist at Oxford University.