1. Improved Limits on $n \rightarrow n'$ Transformation from the Spallation Neutron Source
- Author
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Gonzalez, Francisco M., Rock, Cary, Broussard, Leah J., DeBeer-Schmitt, Lisa, Frost, Matthew J., Heilbronn, Lawrence, Iverson, Erik B., Kamyshkov, Yuri, Kline, Michael, Milstead, David, Powers, Devyn, Rogers, James, Santoro, Valentina, and Vavra, Shaun
- Subjects
High Energy Physics - Experiment ,Nuclear Experiment - Abstract
Conversions between neutrons $n$ and Dark Matter candidate sterile neutrons $n'$ have been proposed as a mechanism for Baryon Number $\mathcal{B}$ violation. In the case that there is a small mass difference $\Delta{m}$ between the $n$ and the $n'$ states, oscillations can be induced by compensating for $\Delta{m}$ with a magnetic field. A search for such neutron oscillations was performed at the Spallation Neutron Source by looking for anomalous neutron transmission through a strongly absorbing cadmium wafer inside of a $6.6$~T magnet. The approach described here saw no regenerated neutrons above background, which provides an improved limit for neutron - sterile neutrons transformations for a range of $\Delta{m}$ between $0.1$~neV and $1000$~neV., Comment: 18 pages, 15 figures
- Published
- 2024