Evidence for νμ → ντ appearance in the CNGS neutrino beam with the OPERA experiment

Ariga, Akitaka; Ariga, Tomoko; Ben Dhahbi, Anis; Brunetti, Giulia; Ereditato, Antonio; Kawada, Jiro; Kimura, Mitsuhiro; Kreslo, Igor; Pistillo, Ciro; Strauss, Thomas; Tufanli, Serhan; Vuilleumier, Jean-Luc (2014). Evidence for νμ → ντ appearance in the CNGS neutrino beam with the OPERA experiment. Physical review. D - particles, fields, gravitation, and cosmology, D89(5), 051102. Melville, N.Y.: American Physical Society 10.1103/PhysRevD.89.051102

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The OPERA experiment is designed to search for ν μ →ν τ oscillations in appearance mode, i.e., through the direct observation of the τ lepton in ν τ -charged current interactions. The experiment has taken data for five years, since 2008, with the CERN Neutrino to Gran Sasso beam. Previously, two ν τ candidates with a τ decaying into hadrons were observed in a subsample of data of the 2008–2011 runs. Here we report the observation of a third ν τ candidate in the τ − →μ − decay channel coming from the analysis of a subsample of the 2012 run. Taking into account the estimated background, the absence of ν μ →ν τ oscillations is excluded at the 3.4 σ level.

Item Type:

Journal Article (Original Article)

Division/Institute:

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

UniBE Contributor:

Ariga, Akitaka; Ariga, Tomoko; Ben Dhahbi, Anis; Brunetti, Giulia; Ereditato, Antonio; Kawada, Jiro; Kimura, Mitsuhiro; Kreslo, Igor; Pistillo, Ciro; Strauss, Thomas; Tufanli, Serhan and Vuilleumier, Jean-Luc

Subjects:

500 Science > 530 Physics

ISSN:

1550-7998

Publisher:

American Physical Society

Language:

English

Submitter:

Jan Dirk Brinksma-Albrecht

Date Deposited:

04 Jun 2015 15:46

Last Modified:

05 Feb 2016 12:36

Publisher DOI:

10.1103/PhysRevD.89.051102

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.68760

URI:

https://boris.unibe.ch/id/eprint/68760

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