Will A New Neutrino Change The Standard Model

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Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE • Thanks to Curiosity Stream for supporting PBSDS. You can get the first 60 days free if you sign up at curiositystream.com/spacetime and use the code spacetime during the sign-up process. • • Since the discovery of the Higgs boson, physicists have searched and searched for any hint of new particles. That search has been fruitless. Until, perhaps, now. Today on Space Time Journal Club we’ll look at a paper that reports a compelling hint of a new particle outside the standard model: the sterile neutrino. • You can further support us on Patreon at / pbsspacetime • Get your own Space Time t-shirt at http://bit.ly/1QlzoBi • Tweet at us! @pbsspacetime • Facebook: facebook.com/pbsspacetime • Email us! pbsspacetime [at] gmail [dot] com • Comment on Reddit: / pbsspacetime • Help translate our videos! • / timedtext_cs_. . • Previous Episode: • How Asteroid Mining Will Save Earth • • How Asteroid Mining Will Save Earth • Regular neutrinos are a bit aloof. They don’t interact by the electromagnetic or strong nuclear forces – only by the weak nuclear force and gravity. They are so weakly interacting that they pass through matter like it isn’t there. To have a 50-50 chance of stopping any given neutrino you’d need a wall of lead … one light year thick! If regular neutrinos are aloof, then sterile neutrinos are the complete loners. They don’t even interact via the weak interaction. Even so, detection of sterile neutrinos would be incredibly important. Besides being the first expansion of the standard model family since the Higgs boson, sterile neutrinos are a candidate for dark matter, and their existence would have had a huge influence on the expansion of the early universe. • Hosted by Matt O'Dowd • Written by Drew Rosen and Matt O'Dowd • Graphics by Grayson Blackmon • Assistant Editing and Sound Design by Mike Petrow and Linda Huang • Made by Kornhaber Brown (www.kornhaberbrown.com) • Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters: • Big Bang • CoolAsCats • David Nicklas • Anton Lifshits • Joey Redner • Fabrice Eap • Quasar • Tambe Barsbay • Mayank M. Mehrota • Mars Yentur • Mark Rosenthal • Dean Fuqua • Roman Pinchuk • ColeslawPurdie • Vinnie Falco • Hypernova • Donal Botkin • Edmund Fokschaner • Matthew O’Connor • Eugene Lawson • Barry Hatfield • Martha Hunt • Joseph Salomone • Chuck Zegar • Craig Peterson • Jordan Young • Ratfeast • John Hofmann • • Thanks to our Patreon Gamma Ray Burst Supporters: • James Hughes • Fabian Olesen • Kris Fernet • Jane Meyers • James Flowers • Greg Allen • Denys Ivanov • Nick Virtue • Alexey Eromenko • Nicholas Rose • Scott Gossett • Mark Vasile • Patrick Murray • Sultan Alkhulaifi • Alex Seto • Michal-Peanut Karmi • Erik Stein • Kevin Warne • JJ Bagnell • Avi Goldfinger • John Pettit • Florian Stinglmayr • Benoit Pagé-Guitard • Nathan Leniz • Brandon Labonte • David Crane • Greg Weiss • Shannan Catalano • Brandon Cook • Malte Ubl

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