期刊
EUROPEAN PHYSICAL JOURNAL C
卷 76, 期 8, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-016-4271-x
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资金
- PSI
- DOE (USA) [DEFG02-91ER40679]
- INFN (Italy)
- MEXT KAKENHI (Japan) [22000004, 26000004]
- Schweizerischer Nationalfonds (SNF) [200021_137738]
- Russian Federation Ministry of Education and Science
- Russian Fund for Basic Research [RFBR-14-22-03071]
- Swiss National Science Foundation (SNF) [200021_137738] Funding Source: Swiss National Science Foundation (SNF)
- Grants-in-Aid for Scientific Research [22000004, 15J10695, 26000004] Funding Source: KAKEN
The final results of the search for the lepton flavour violating decay mu(+) -> e(+)gamma based on the full dataset collected by the MEG experiment at the Paul Scherrer Institut in the period 2009-2013 and totalling 7.5x10(14) stopped muons on target are presented. Nosignificant excess of events is observed in the dataset with respect to the expected background and a new upper limit on the branching ratio of this decay of B(mu(+) -> e(+) gamma) < 4.2 x 10(-13) (90 % confidence level) is established, which represents the most stringent limit on the existence of this decay to date.
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