Reevaluation of 2005 measurement deepens mystery of neutron lifetime discrepancy

(Phys.org) —A team of researchers from a variety of institutions in the U.S. has reevaluated a measurement made of the lifetime of a neutron back in 2005 and in doing so has reduced the uncertainty of the accuracy of the measurement made—unfortunately it's also led to an increase in the lifetime that was being measured. This, the researchers note in their paper published in Physical Review Letters, only increases the discrepancy between it and lifetime measurements made using another technique.

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