22-26 October 2018
Hotel Intourist Kolomenskoye 4*
Europe/Moscow timezone

Neutron lifetime: experimental problem or anomaly?

26 Oct 2018, 10:15
Moskvorechye 2 hall (Hotel Intourist Kolomenskoye 4*)

Moskvorechye 2 hall

Hotel Intourist Kolomenskoye 4*

Kashyrskoye shosse, 39B, Moscow, Russia, 115409
Plenary/section talk Nuclear physics Nuclear physics


Prof. Anatolii Serebrov


The review of experimental measurements of neutron lifetime is presented. Latest measurements with gravitational trap (PNPI NRC KI) and magnetic trap (LANL, USA) confirmed the result obtained by PNPI group in 2005. The results of measurements performed using UCN storing method are in good agreement; however there is a significant discrepancy at 3.5σ (1% of decay probability) level with beam method experiment. That discrepancy is mentioned in scientific literature as "neutron anomaly". The possible sources of the discrepancy are discussed.

Primary author

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