Does the KARMEN time anomaly originate from a beam-correlated background?
F. Atchison, M. Daum, P.-R. Kettle, C. Wigger,, (Paul-Scherrer-Institut)
TL;DR
The paper investigates whether beam-related neutron background could explain the KARMEN time anomaly, suggesting that incomplete suppression of these neutrons might account for the observed deviations in neutrino event timing.
Contribution
It demonstrates that beam-correlated neutron events, not fully suppressed, could be responsible for the KARMEN time anomaly, offering an alternative explanation.
Findings
Beam-correlated neutron events are not fully suppressed by energy cuts.
Neutron background could cause deviations in the time distribution.
Potential link between neutron background and observed anomaly.
Abstract
The time anomaly of neutrino events observed in the KARMEN detector at the ISIS facility is discussed. We show that beam-correlated neutron events are not completely suppressed by the KARMEN lower energy cut and could cause the observed deviation of the measured time distribution from an exponential curve with tau = 2.2 microseconds.
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