Continuous monitoring of a cloud of antiprotons stored in a Penning trap for 405 days enables us to set an improved limit on the directly measured antiproton lifetime. From our… Click to show full abstract
Continuous monitoring of a cloud of antiprotons stored in a Penning trap for 405 days enables us to set an improved limit on the directly measured antiproton lifetime. From our measurements we extract a storage time of equivalent antiproton-seconds, resulting in a lower lifetime limit of with a confidence level of . This result improves the limit on charge-parity-time violation in antiproton decays based on direct observation by a factor of 7.
               
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