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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:4
UID:UW-Physics-Event-9760
DTSTART:20260921T163000Z
DTEND:20260921T180000Z
DTSTAMP:20260919T052038Z
LAST-MODIFIED:20260917T181301Z
LOCATION:Chamberlin 5280
SUMMARY:Beyond Δm²: Absolute Mass Sensitivity in Neutrino Oscillatio
 ns\, Theory Seminar (High Energy/Cosmology)\, André de Gouvêa\, Nort
 hwestern University
DESCRIPTION:Conventional wisdom says that neutrino oscillations measur
 e only mass-squared differences and not the absolute neutrino mass sca
 le. This is true\, however\, only at leading order in the expansion pa
 rameters m_i/E\, the ratios of the neutrino masses m_i (i = 1\, 2\, 3)
  to the neutrino energy E. At next-to-leading order\, the oscillation 
 phase includes terms proportional to m_i^4 − m_j^4 = Δm²_ij (m_i^2
  + m_j^2)\, and is therefore sensitive to the absolute mass scale. I d
 iscuss the next-to-leading-order corrections using a wave-packet treat
 ment and taking into account the neutrino-production kinematics. The r
 esult can be applied to reactor neutrinos and\, it turns out\, the JUN
 O experiment is sensitive to neutrino masses of a few hundred keV.
URL:https://www.physics.wisc.edu/events/?id=9760
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