Searches for Non-Sm Physics with the Karmen Experiment

Details Searches for Non-Sm Physics with the Karmen Experiment Searches for Non-Sm Physics with the Karmen Experiment

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001neph.conf..182e&link_type=abstract

NEUTRINO PHYSICS Its Impact on Particle Physics, Astrophysics and Cosmology. Proceedings of the Carolina Symposium on Neutrino P

Astronomy and Astrophysics

Astrophysics

Scientific paper

The neutrino experiment KARMEN is taking data in its upgraded configuration since February 1997. A search for bar {ν }μ -> bar {ν }e oscillations through p (bar {ν }e, e+) n shows no oscillation signal. A maximum likelihood analysis of the data leads to an upper limit for the mixing angle of sin2(2θ) < 2.1 · 10 -3 (90% CL) at large Δm2. An anomaly in the time distribution of v-induced events is persistent through the entire KARMEN1+2 data set. A new analysis including recent data is presented showing consistency with a hypothetical non-SM decay π +→ μ+ + X of pions.

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