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Center for Astrophysics Research and Technologies Seminar Series Information


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A Dark Baryon Explanation of The Neutron Decay Anomaly

Friday September 3, 2021
3:30 pm

 Presenter:  Benjamin Grinstein, UCSD
 Series:  Physics and Astronomy Colloquium
 Abstract:  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 "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.
 Web Site:    https:/ / youtu.be/ P4ci-UGEwcw
 Host:  Kevin Cahill
 Location:  Zoom

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