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arXiv · hep-ph/0001160

The KARMEN anomaly, light neutralinos and type II supernovae

M. Kachelriess
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Abstract

The KARMEN experiment observes a time anomaly in events induced by pion decay at rest. This anomaly can be ascribed to the production of a new weakly interacting particle X with mass m_X\sim 34 MeV. We show that a recently proposed identification of the X particle with the lightest neutralino χin the frame work of the MSSM with broken R parity is in contradiction to optical observations of type II supernovae.

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M. Kachelriess. 2000-03-07. The KARMEN anomaly, light neutralinos and type II supernovae. https://doi.org/10.1088/1126-6708%2F2000%2F02%2F010

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