Ústav technické a experimentální fyziky Institute of Experimental and Applied Physics

Probing lepton flavour violation via neutrinoless tau -> 3 mu decays with the ATLAS detector

NázevTitle
Probing lepton flavour violation via neutrinoless tau -> 3 mu decays with the ATLAS detectorProbing lepton flavour violation via neutrinoless tau -> 3 mu decays with the ATLAS detector
Druh výsledkuResult type
Článek v časopiseJournal article
AutořiAuthors
G. Aad, B. Abbott, J. Abdallah, O. Abdinov, K. Augsten, D. Caforio, P. Gallus, J. Guenther, Z. Hubáček, J. Jakůbek, Z. Kohout, M. Myška, S. Pospíšil, F. Seifert, V. Šimák, T. Slavíček, K. Smolek, M. Solar, J. Šolc, A. Sopczak, B. Sopko, V. Sopko, M. Suk, D. Tureček, V. Vacek, P. Vokáč, Z. Vykydal, M. Zeman, M. Vlasak
DOIDOI
10.1140/epjc/s10052-016-4041-9
Časopis / citaceJournal / citation
European Physical Journal C. 2016, 76(5), ISSN 1434-6044.
RokYear
2016
JazykLanguage
eng
WoSWoS
000374991300004
ScopusScopus
2-s2.0-84996598278
RIVRIV
RIV/68407700:21220/16:00309043!RIV17-MSM-21220___
ProjektProject
CERN-CZ - Výzkumná infrastruktura pro experimenty v CERN - LM2015058 (2016–2019)CERN-CZ - Výzkumná infrastruktura pro experimenty v CERN - LM2015058 (2016–2019); Zkoumání mikrosvěta s využitím infrastruktury CERNInvestigation of the Microworld using the CERN Infrastructure

AbstraktAbstract

This article presents the sensitivity of the ATLAS experiment to the lepton-flavour-violating decays of tau -> 3 mu. A method utilising the production of t leptons via W -> tau nu decays is used. This method is applied to the sample of 20.3 fb(-1) of pp collision data at a centre-of-mass energy of 8 TeV collected by the ATLAS experiment at the LHC in 2012. No event is observed passing the selection criteria, and the observed (expected) upper limit on the tau lepton branching fraction into three muons, Br(tau -> 3 mu), is 3.76 x 10(-7) (3.94 x 10(-7)) at 90 % confidence level.

This article presents the sensitivity of the ATLAS experiment to the lepton-flavour-violating decays of tau -> 3 mu. A method utilising the production of t leptons via W -> tau nu decays is used. This method is applied to the sample of 20.3 fb(-1) of pp collision data at a centre-of-mass energy of 8 TeV collected by the ATLAS experiment at the LHC in 2012. No event is observed passing the selection criteria, and the observed (expected) upper limit on the tau lepton branching fraction into three muons, Br(tau -> 3 mu), is 3.76 x 10(-7) (3.94 x 10(-7)) at 90 % confidence level.