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Benjamin Grinstein (UCSD)

Date: Tue. April 6th, 2021, 12:30 pm-1:30 pm

Special time 12:30 pm ET!!

The Neutron Decay Anomaly: how it may be a window to new Physics

In this talk I will first review a long-standing discrepancy between the neutron lifetime as measured in beam and in bottle experiments. If this discrepancy is not due to a systematic error, it may be due to novel mechanisms for neutron transmutation into new, as yet unknown elementary particles. These particles would be electrically neutral, or so-called “dark”. We will explain several scenarios for the possibility of neutron transmutation into dark particles. For example, in one interesting scenario the products of the neutron transmutation include a monochromatic photon with energy in the range 0.782 MeV–1.664 MeV and this is predicted to occur in 1% of all neutron decays. We will describe recent theoretical developments as well as ongoing and planned experiments looking directly to establish or rule out the “dark decay” hypothesis.

Host: Pavel Fileviez Perez

Zoom meeting ID:  999 3023 4812
For the password to access the meeting please contact one of us:
Kurt Hinterbichler: kjh92
Kara Farnsworth: kmf137
Ellen Rabe: exr223
Idit Zehavi: ixz6

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