Measurement of the neutrino velocity with the OPERA detector in the CNGS beam using the 2012 dedicated data

Adam, T.
Agafonova, N.
Aleksandrov, A.
Anokhina, A.
Aoki, S.
Ariga, A.
Ariga, T.
Autiero, D.
Badertscher, A.
Ben Dhahbi, A.
Beretta, M.
Bertolin, A.
Bozza, C.
Brugiere, T.
Brugnera, R.
Brunet, F.
Brunetti, G.
Buettner, B.
Buontempo, S.
Carlus, B.
Cavanna, F.
Cazes, A.
Chaussard, L.
Chernyavsky, M.
Chiarella, V.
Chukanov, A.
D'Ambrosio, N.
De Lellis, G.
De Serio, M.
Sanchez, P. del Amo
Di Crescenzo, A.
Di Ferdinando, D.
Di Marco, N.
Dmitrievsky, S.
Dracos, M.
Duchesneau, D.
Dusini, S.
Dzhatdoev, T.
Ebert, J.
Ereditato, A.
Esposito, L. S.
Favier, J.
Felici, G.
Ferber, T.
Fini, R. A.
Fukuda, T.
Garfagnini, A.
Giacomelli, G.
Girerd, C.
Goellnitz, C.
Goldberg, J.
Golubkov, D.
Gornushkin, Y.
Grella, G.
Grianti, F.
Guerin, C.
Güler, Ali Murat
Gustavino, C.
Hagner, C.
Hamada, K.
Hara, T.
Hierholzer, M.
Hollnagel, A.
Ishida, H.
Ishiguro, K.
Jakovcic, K.
Jollet, C.
Kamiscioglu, C.
Kamiscioglu, M.
Kawada, J.
Kim, J. H.
Kim, S. H.
Kimura, M.
Kitagawa, N.
Klicek, B.
Kodama, K.
Komatsu, M.
Kose, U.
Kreslo, I.
Lauria, A.
Lazzaro, C.
Lenkeit, J.
Ljubicic, A.
Longhin, A.
Malgin, A.
Mancini-Terracciano, C.
Mandrioli, G.
Marteau, J.
Matsuo, T.
Matveev, V.
Mauri, N.
Medinaceli, E.
Meregaglia, A.
Migliozzi, P.
Mikado, S.
Monacelli, P.
Montesi, M. C.
Morishima, K.
Moser, U.
Muciaccia, M. T.
Nakamura, M.
Nakano, T.
Nakatsuka, Y.
Naumov, D.
Nikitina, V.
Ogawa, S.
Olchevsky, A.
Ozaki, K.
Palamara, O.
Paoloni, A.
Park, B. D.
Park, I. G.
Pastore, A.
Patrizii, L.
Pennacchio, E.
Pessard, H.
Pistillo, C.
Podgrudkov, D.
Polukhina, N.
Pozzato, M.
Pretzl, K.
Pupilli, F.
Rescigno, R.
Roda, M.
Roganova, T.
Rokujo, H.
Rosa, G.
Rostovtseva, I.
Rubbia, A.
Russo, A.
Ryazhskaya, O.
Sato, O.
Sato, Y.
Schembri, A.
Schmidt-Parzefall, W.
Schuler, J.
Shakiryanova, I.
Sheshukov, A.
Shibuya, H.
Shoziyoev, G.
Simone, S.
Sioli, M.
Sirignano, C.
Sirri, G.
Song, J. S.
Spinetti, M.
Stanco, L.
Starkov, N.
Stellacci, S. M.
Stipcevic, M.
Strauss, T.
Takahashi, S.
Tenti, M.
Terranova, F.
Tioukov, V.
Tolun, P.
Tufanli, S.
Vilain, P.
Vladimirov, M.
Votano, L.
Vuilleumier, J. -L.
Wilquet, G.
Wonsak, B.
Wurtz, J.
Yoon, C. S.
Yoshida, J.
Zaitsev, Y.
Zemskova, S.
Zghiche, A.
Zimmermann, R.
In spring 2012 CERN provided two weeks of a short bunch proton beam dedicated to the neutrino velocity measurement over a distance of 730 km. The OPERA neutrino experiment at the underground Gran Sasso Laboratory used an upgraded setup compared to the 2011 measurements, improving the measurement time accuracy. An independent timing system based on the Resistive Plate Chambers was exploited providing a time accuracy of similar to 1 ns. Neutrino and anti-neutrino contribution were separated using the information provided by the OPERA magnetic spectrometers. The new analysis profited from the precision geodesy measurements of the neutrino beaseline and of the CNGS/LNGS clock synchronization. The neutrino arrival time with respect to the one computed assuming the speed of light in vacuum is found to be delta t(nu) equivalent to TOFc - TOF nu = (0.6 +/- 0.4 (stat.)+/- 3.0 (syst.)) and delta t((nu) over bar) equivalent to TOFc-TOF(nu) over bar = (1.7 +/- 1.4 (stat.)+/- 3.1 (syst.)) ns for nu(mu) and (nu) over bar (mu), respectively. This corresponds to a limit on the muon neutrino velocity with respect to the speed of light of -1.8 x 10(-6) < (V-nu - c)/c < 2.3 x 10(-6) at 90% C.L. This new measurement confirms with higher accuracy the revised OPERA result.


Measurement of the neutrino velocity with the OPERA detector in the CNGS beam
Adam, T.; et. al. (2012-10-01)
The OPERA neutrino experiment at the underground Gran Sasso Laboratory has measured the velocity of neutrinos from the CERN CNGS beam over a baseline of about 730 km. The measurement is based on data taken by OPERA in the years 2009, 2010 and 2011. Dedicated upgrades of the CNGS timing system and of the OPERA detector, as well as a high precision geodesy campaign for the measurement of the neutrino baseline, allowed reaching comparable systematic and statistical accuracies. An arrival time of CNGS muon neu...
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Citation Formats
T. Adam et al., “Measurement of the neutrino velocity with the OPERA detector in the CNGS beam using the 2012 dedicated data,” JOURNAL OF HIGH ENERGY PHYSICS, vol. 2013, no. 1, pp. 0–0, 2013, Accessed: 00, 2023. [Online]. Available: