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SUMMARY:The Dark Neutrino Rises
DTSTART:20260709T130000Z
DTEND:20260709T140000Z
DTSTAMP:20260722T103700Z
UID:indico-event-1568@conference.ippp.dur.ac.uk
DESCRIPTION:Speakers: Srubabati Goswami\n\nSterile neutrinos are compellin
 g dark matter (DM) candidates\, yet the minimal Dodelson-Widrow production
  mechanism solely based on active sterile oscillations is excluded by astr
 ophysical observations. Non-standard self-interactions in either the activ
 e or sterile sector are known to alter the sterile neutrino DM production 
 in the early universe\, which could alleviate the tension with astrophysic
 al constraints to some extent. Here we propose a novel solution where scal
 ar-mediated non-standard interactions between active and sterile neutrinos
  generate new production channels for sterile neutrino DM\, independent of
  the active-sterile mixing and without the need for any fine-tuned resonan
 ce or primordial lepton asymmetry. We discuss two cases. This framework en
 ables efficient sterile neutrino DM production even at vanishingly small m
 ixing angles and opens up new viable regions of parameter space that can b
 e tested with future X-ray and gamma-ray observations. We will consider th
 e case of both heavy and light mediators. Some of the constraints coming f
 rom astrophysics and cosmology will also be discussed. \n\nhttps://confer
 ence.ippp.dur.ac.uk/event/1568/
URL:https://conference.ippp.dur.ac.uk/event/1568/
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