BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//LBNL Physics Division Research Progress Meetings - ECPv6.8.3//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-ORIGINAL-URL:https://rpm.physics.lbl.gov
X-WR-CALDESC:Events for LBNL Physics Division Research Progress Meetings
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:UTC
BEGIN:STANDARD
TZOFFSETFROM:+0000
TZOFFSETTO:+0000
TZNAME:UTC
DTSTART:20200101T000000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=UTC:20200114T160000
DTEND;TZID=UTC:20200114T170000
DTSTAMP:20260417T072626
CREATED:20191022T020457Z
LAST-MODIFIED:20200106T162058Z
UID:1286-1579017600-1579021200@rpm.physics.lbl.gov
SUMMARY:Marjon Moulai (MIT) "Unstable Sterile Neutrinos in IceCube and Beyond
DESCRIPTION:Abstract:\nLong-standing anomalies in short-baseline neutrino oscillation experiments suggest the existence of a new particle: the sterile neutrino. Unlike other neutrinos\, sterile neutrinos do not interact via the weak nuclear force. Global fits to experimental data find a significant preference for a 3+1 sterile neutrino model\, which introduces a fourth\, heavier mass eigenstate\, over the Standard Model with three massive neutrinos. However\, disagreement between the preferred parameter regions in the appearance and disappearance datasets suggest that something beyond the 3+1 model is needed. In this talk\, I will address this problem in two ways: the first is a new\, unique search for sterile neutrinos\, and the second is an unstable sterile neutrino model. IceCube\, a gigaton ice-Cherenkov detector\, is uniquely sensitive to a signature of sterile neutrinos that occurs for neutrinos traversing the earth at TeV energies. I will present the new 3+1 sterile neutrino search result from IceCube using eight years of data. Then I will discuss a sterile neutrino model involving neutrino decay. I will present: the phenomenology of this model in the case of IceCube; the result of incorporating IceCube data into recent global fits; and finally\, the status of an eight-year search for unstable sterile neutrinos in IceCube.
URL:https://rpm.physics.lbl.gov/event/reserved-86/
LOCATION:HYBRID 50A-5132 (Sessler Conference Room)\, https://lbnl.zoom.us/j/91782268585\, 50A-5132
END:VEVENT
END:VCALENDAR