CERN Accelerating science

Article
Report number arXiv:1208.1392
Title Measurement of the velocity of neutrinos from the CNGS beam with the Large Volume Detector
Author(s)

Agafonova, N.Yu. (Moscow, INR) ; Aglietta, M. (INFN, Turin) ; Antonioli, P. (INFN, Bologna) ; Ashikhmin, V.V. (Moscow, INR) ; Bari, G. (INFN, Bologna) ; Bertoni, R. (INFN, Turin) ; Bressan, E. (Bologna U. ; Enrico Fermi Ctr., Rome) ; Bruno, G. (Gran Sasso) ; Dadykin, V.L. (Moscow, INR) ; Fulgione, W. (INFN, Turin) ; Galeotti, P. (Turin U. ; INFN, Turin) ; Garbini, M. (INFN, Bologna ; Bologna U.) ; Ghia, P.L. (Paris U., VI-VII) ; Giusti, P. (INFN, Bologna) ; Kemp, E. (Campinas State U.) ; Mal'gin, A.S. (Moscow, INR) ; Miguez, B. (Sao Joao U., Campinas ; Gran Sasso) ; Molinario, A. (INFN, Turin) ; Persiani, R. (INFN, Bologna ; Bologna U.) ; Pless, I.A. (MIT) ; Ryasny, V.G. (Moscow, INR) ; Ryazhskaya, O.G. (Moscow, INR) ; Saavedra, O. (Turin U. ; INFN, Turin) ; Sartorelli, G. (INFN, Bologna ; Bologna U.) ; Shakyrianova, I.R. (Moscow, INR) ; Selvi, M. (INFN, Bologna) ; Trinchero, G.C. (INFN, Turin) ; Vigorito, C. (Turin U. ; INFN, Turin) ; Yakushev, V.F. (Moscow, INR) ; Zichichi, A. (INFN, Bologna ; Bologna U. ; Enrico Fermi Ctr., Rome ; CERN) ; Razeto, A. (Gran Sasso)

Publication 2012
Imprint 08 Aug 2012
Number of pages 5
Note Comments: to be published in Physical Review Letters
In: Phys. Rev. Lett. 109 (2012) 070801
DOI 10.1103/PhysRevLett.109.070801
Subject category Particle Physics - Experiment
Abstract We report the measurement of the time-of-flight of  17 GeV muon neutrinos on the CNGS baseline (732 km) with the Large Volume Detector (LVD) at the Gran Sasso Laboratory. The CERN-SPS accelerator has been operated from May 10th to May 24th 2012, with a tightly bunched-beam structure to allow the velocity of neutrinos to be accurately measured on an event-by-event basis. LVD has detected 48 neutrino events, associated to the beam, with a high absolute time accuracy. These events allow to establish the following limit on the difference between the neutrino speed and the light velocity: -3.8 x 10-6 < (v-c)/c < 3.1 x 10-6 (at 99% C.L.). This value is an order of magnitude lower than previous direct measurements.
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 Element opprettet 2012-08-08, sist endret 2024-05-31


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