Sterile neutrinos (or inert neutrinos) are hypothetical particles (neutral leptons – neutrinos) that are believed to interact only via gravity and not via any of the other fundamental interactions of the Standard Model. The term sterile neutrino is used to distinguish them from the known active neutrinos in the Standard Model, which carry an isospin charge of ±+1/ 2 under the weak interaction. It typically refers to neutrinos with right-handed chirality (see right-handed neutrino), which may be added to the Standard Model. Particles that possess the quantum numbers of sterile neutrinos and masses great enough such that they do not interfere with the current theory of Big Bang Nucleosynthesis are often called neutral heavy leptons (NHLs) or heavy neutral leptons (HNLs). The existence of right-handed neutrinos is theoretically well-motivated, because the known active neutrinos are left-handed and all other known fermions have been observed with both left and right chirality. They could also explain in a natural way the small active neutrino masses inferred from neutrino oscillation. The mass of the right-handed neutrinos themselves is unknown and could have any value between 1015 GeV and less than 1 eV. To comply with theories of leptogenesis and dark matter, there must be at least 3 types of sterile neutrinos (if they exist). This is in contrast to the number of active neutrino types required to ensure the electroweak interaction is free of anomalies, which must be exactly 3: the number of charged leptons and quark generations. The search for sterile neutrinos is an active area of particle physics. If they exist and their mass is smaller than the energies of particles in the experiment, they can be produced in the laboratory, either by mixing between active and sterile neutrinos or in high energy particle collisions. If they are heavier, the only directly observable consequence of their existence would be the observed active neutrino masses. They may, however, be responsible for a number of unexplained phenomena in physical cosmology and astrophysics, including dark matter, baryogenesis or hypothetical dark radiation. In May 2018, physicists of the MiniBooNE experiment reported a stronger neutrino oscillation signal than expected, a possible hint of sterile neutrinos. However, results of the MicroBooNE experiment showed no evidence of sterile neutrinos in October 2021. (Wikipedia).
Do sterile neutrinos exist? | Even Bananas
We interrupt your regularly scheduled #EvenBananas with this edition of Particle/Counter Particle. In this science debate show, two physicists discuss the possible existence of "sterile neutrinos," a theorized fourth kind of neutrino. If sterile neutrinos exist, it would be a radical disco
From playlist Neutrinos
Time and again, the study of neutrinos has confounded scientists. One very peculiar property of neutrinos is that only neutrinos with a specific spin configuration have been observed. In this video, Fermilab’s Dr. Don Lincoln talks about this and lays out the possibility that other types
From playlist Neutrinos
Subscribe to our YouTube Channel for all the latest from World Science U. Visit our Website: http://www.worldscienceu.com/ Like us on Facebook: https://www.facebook.com/worldscienceu Follow us on Twitter: https://twitter.com/worldscienceu
From playlist Science Unplugged: Neutrinos
Nuclear Physics C1 The Neutrino
The neutrino and antineutrino
From playlist Physics - Nuclear Physics and Radioactivity
The elusive neutrino is the most difficult to detect of the particles of the standard model. However the story is more complex than that. When a neutrino actually interacts, it is easy to detect. However neutrinos interact only rarely. In this video, Fermilab’s Dr. Don Lincoln explains
From playlist Neutrinos
Subscribe to our YouTube Channel for all the latest from World Science U. Visit our Website: http://www.worldscienceu.com/ Like us on Facebook: https://www.facebook.com/worldscienceu Follow us on Twitter: https://twitter.com/worldscienceu
From playlist Science Unplugged: Neutrinos
Why I Love Neutrinos is a series spotlighting those mysterious, abundant, ghostly particles that are all around us. This installment features a compilation of international scientists. For more information on neutrinos, visit the Fermilab website at http://www.fnal.gov.
From playlist Why I Love Neutrinos
NOvA: Building a Next Generation Neutrino Experiment
The NOvA neutrino experiment is searching for the answers to some of the most fundamental questions of the universe. This video documents how collaboration between government research institutions like Fermilab, academia and industry can create one of the largest neutrino detectors in the
From playlist Neutrinos
Self-Interacting Neutrinos: Unified Path to Dark Matter and Cosmological Tensions by Mansi Dhuria
PROGRAM LESS TRAVELLED PATH TO THE DARK UNIVERSE ORGANIZERS: Arka Banerjee (IISER Pune), Subinoy Das (IIA, Bangalore), Koushik Dutta (IISER, Kolkata), Raghavan Rangarajan (Ahmedabad University) and Vikram Rentala (IIT Bombay) DATE & TIME: 13 March 2023 to 24 March 2023 VENUE: Ramanujan
From playlist LESS TRAVELLED PATH TO THE DARK UNIVERSE
Will A New Neutrino Change The Standard Model?
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
From playlist Neutrinos
New physics searches in Neutrino Oscillations by Poonam Mehta
DISCUSSION MEETING : PARTICLE PHYSICS: PHENOMENA, PUZZLES, PROMISES ORGANIZERS: Amol Dighe, Rick S Gupta, Sreerup Raychaudhuri and Tuhin S Roy, Department of Theoretical Physics, TIFR, India DATE: 21 November 2022 to 23 November 2022 VENUE: Ramanujan Lecture Hall and Online While the L
From playlist Particle Physics: Phenomena, Puzzles, Promises - (Edited)
Uncovering Dark Matter Physics:from the Early Universe to near Field Cosmology by Vera Gluscevic
PROGRAM LESS TRAVELLED PATH TO THE DARK UNIVERSE ORGANIZERS: Arka Banerjee (IISER Pune), Subinoy Das (IIA, Bangalore), Koushik Dutta (IISER, Kolkata), Raghavan Rangarajan (Ahmedabad University) and Vikram Rentala (IIT Bombay) DATE & TIME: 13 March 2023 to 24 March 2023 VENUE: Ramanujan
From playlist LESS TRAVELLED PATH TO THE DARK UNIVERSE
Oliver Fischer, 9th FCC-ee Physics Workshop - Tuesday, 5 February 2015
Experimental studies Most recent progress from the working groups Sterile Neutrinos at Future Lepton Colliders Speaker: Oliver Fischer
From playlist 9th FCC-ee Physics Workshop - 3-5 February 2015
Supernova Neutrinos by Sovan Chakravarty
DISCUSSION MEETING PARTICLE PHYSICS: PHENOMENA, PUZZLES, PROMISES ORGANIZERS: Amol Dighe, Rick S Gupta, Sreerup Raychaudhuri and Tuhin S Roy, Department of Theoretical Physics, TIFR, India DATE: 21 November 2022 to 23 November 2022 VENUE: Ramanujan Lecture Hall and Online While the LH
From playlist Particle Physics: Phenomena, Puzzles, Promises - (Edited)
Janet Conrad: On a Hunt for a Ghost of a Particle
Janet Conrad explains how sterile neutrinos might help physicists move past the Standard Model. QUANTA MAGAZINE Website: https://www.quantamagazine.org/ Facebook: https://www.facebook.com/QuantaNews Twitter: https://twitter.com/QuantaMagazine You can also sign up for our weekly newslet
From playlist Inside the Mind of a Scientist
Neutrinos: Nature's Identity Thieves?
The oscillation of neutrinos from one variety to another has long been suspected, but was confirmed only about 15 years ago. In order for these oscillations to occur, neutrinos must have a mass, no matter how slight. Since neutrinos have long been thought to be massless, in a very real w
From playlist Neutrinos
The physics anomaly no one talks about: What's up with those neutrinos?
Check out the math & physics courses that I mentioned (many of which are free!) and support this channel by going to https://brilliant.org/Sabine/ where you can create your Brilliant account. The first 200 will get 20% off the annual premium subscription. 20 years ago the LSND experiment
From playlist Physics