Publication Date:
2017-09-01
Description:
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 ##IMG## [http://ej.iop.org/images/1367-2630/19/8/083023/njpaa7e73ieqn1.gif] {$3.15\times {10}^{8}$} equivalent antiproton-seconds, resulting in a lower lifetime limit of ##IMG## [http://ej.iop.org/images/1367-2630/19/8/083023/njpaa7e73ieqn2.gif] {${\tau }_{\bar{{\rm{p}}}}\gt 10.2\,{\rm{a}}$} with a confidence level of ##IMG## [http://ej.iop.org/images/1367-2630/19/8/083023/njpaa7e73ieqn3.gif] {$68 \% $} . This result improves the limit on charge-parity-time violation in antiproton decays based on direct observation by a factor of 7.
Electronic ISSN:
1367-2630
Topics:
Physics
Permalink