Remarks on the KARMEN anomaly
Abstract
A recently reported anomaly in the time structure of signals in the KARMEN neutrino detector suggests the decay of a new particle x, produced in pi(+) yields (mu(+))x with mass M(sub x) = 33.9 MeV. The authors discuss the constraints and difficulties in interpreting x as a neutrino. The authors show that a mainly-sterile neutrino scenario is tenable, within narrow constraints on the mixing parameters, but it predicts that appreciable numbers of other x-decay events with different origins and time structures should also be observable in the KARMEN detector. Such x-decay events should also be found in the LSND experiment and may be relevant to the search for (bar-nu)(sub mu) yields (bar-nu)(sub e) oscillations.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- March 1995
- Bibcode:
- 1995STIN...9534650B
- Keywords:
-
- Leptons;
- Neutrinos;
- Oscillations;
- Particle Decay;
- Time Dependence;
- Branching (Mathematics);
- Life (Durability);
- Pions;
- Time Signals;
- Atomic and Molecular Physics