Observation of tau neutrino appearance in the CNGS beam with the OPERA experiment

Ariga, Tomoko; Ereditato, Antonio; Kawada, Jiro; Kreslo, Igor; Pistillo, Ciro; Tufanli, Serhan; Vuilleumier, Jean-Luc; Yaguchi Wermuth, Izumi (2014). Observation of tau neutrino appearance in the CNGS beam with the OPERA experiment. Progress of theoretical and experimental physics, 2014(10), 101C01. Oxford University Press 10.1093/ptep/ptu132

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The OPERA experiment is searching for νμ → ντ oscillations in appearance mode, i.e., via the direct detection of τ leptons in ντ charged-current interactions. The evidence of νμ → ντ appearance has been previously reported with three ντ candidate events using a sub-sample of data from the 2008–2012 runs. We report here a fourth ντ candidate event, with the τ decaying into a hadron, found after adding the 2012 run events without any muon in the final state to the data sample. Given the number of analyzed events and the low background, νμ → ντ oscillations are established with a significance of 4.2σ.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Ariga, Tomoko; Ereditato, Antonio; Kawada, Jiro; Kreslo, Igor; Pistillo, Ciro; Tufanli, Serhan; Vuilleumier, Jean-Luc and Yaguchi Wermuth, Izumi

Subjects:

500 Science > 530 Physics

ISSN:

2050-3911

Publisher:

Oxford University Press

Language:

English

Submitter:

Jan Dirk Brinksma

Date Deposited:

21 May 2015 12:14

Last Modified:

21 May 2015 12:14

Publisher DOI:

10.1093/ptep/ptu132

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt

BORIS DOI:

10.7892/boris.68748

URI:

https://boris.unibe.ch/id/eprint/68748

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