Measurement of the neutrino velocity with the OPERA detector in the CNGS beam

Adam, T.
Agafonova, N.
Aleksandrov, A.
Altinok, O.
Sanchez, P. Alvarez
Anokhina, A.
Aoki, S.
Ariga, A.
Ariga, T.
Autiero, D.
Badertscher, A.
Ben Dhahbi, A.
Bertolin, A.
Bozza, C.
Brugiere, T.
Brugnera, R.
Brunet, F.
Brunetti, G.
Buontempo, S.
Carlus, B.
Cavanna, F.
Cazes, A.
Chaussard, L.
Chernyavsky, M.
Chiarella, V.
Chukanov, A.
Colosimo, G.
Crespi, M.
D'Ambrosio, N.
De Lellis, G.
De Serio, M.
Declais, Y.
Sanchez, P. del Amo
Di Capua, F.
Di Crescenzo, A.
Di Ferdinando, D.
Di Marco, N.
Dmitrievsky, S.
Dracos, M.
Duchesneau, D.
Dusini, S.
Dzhatdoev, T.
Ebert, J.
Efthymiopoulos, I.
Egorov, O.
Ereditato, A.
Esposito, L. S.
Favier, J.
Ferber, T.
Fini, R. A.
Fukuda, T.
Garfagnini, A.
Giacomelli, G.
Giorgini, M.
Giovannozzi, M.
Girerd, C.
Goldberg, J.
Goellnitz, C.
Golubkov, D.
Goncharova, L.
Gornushkin, Y.
Grella, G.
Grianti, F.
Gschwendtner, E.
Guerin, C.
Güler, Ali Murat
Gustavino, C.
Hagner, C.
Hamada, K.
Hara, T.
Enikeev, R.
Hierholzer, M.
Hollnagel, A.
Ieva, M.
Ishida, H.
Ishiguro, K.
Jakovcic, K.
Jollet, C.
Jones, M.
Juget, F.
Kamiscioglu, M.
Kawada, J.
Kim, S. H.
Kimura, M.
Kiritsis, E.
Kitagawa, N.
Klicek, B.
Knuesel, J.
Kodama, K.
Komatsu, M.
Kose, U.
Kreslo, I.
Lazzaro, C.
Lenkeit, J.
Ljubicic, A.
Longhin, A.
Malgin, A.
Mandrioli, G.
Marteau, J.
Matsuo, T.
Matveev, V.
Mauri, N.
Mazzoni, A.
Medinaceli, E.
Meisel, F.
Meregaglia, A.
Migliozzi, P.
Mikado, S.
Missiaen, D.
Monacelli, P.
Morishima, K.
Moser, U.
Muciaccia, M. T.
Naganawa, N.
Naka, T.
Nakamura, M.
Nakano, T.
Nakatsuka, Y.
Naumov, D.
Nikitina, V.
Nitti, F.
Ogawa, S.
Okateva, N.
Olchevsky, A.
Palamara, O.
Paoloni, A.
Park, B. D.
Park, I. G.
Pastore, A.
Patrizii, L.
Pennacchio, E.
Pessard, H.
Pistillo, C.
Polukhina, N.
Pozzato, M.
Pretzl, K.
Pupilli, F.
Rescigno, R.
Riguzzi, F.
Roganova, T.
Rokujo, H.
Rosa, G.
Rostovtseva, I.
Rubbia, A.
Russo, A.
Ryasny, V.
Ryazhskaya, O.
Sato, O.
Sato, Y.
Sahnoun, Z.
Schembri, A.
Schuler, J.
Lavina, L. Scotto
Serrano, 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.
Stipcevic, M.
Strauss, T.
Takahashi, S.
Tenti, M.
Terranova, F.
Tezuka, I.
Tioukov, V.
Tolun, P.
Tran, N. T.
Tufanli, S.
Vilain, P.
Vladimirov, M.
Votano, L.
Vuilleumier, J. -L.
Wilquet, G.
Wonsak, B.
Wurtz, J.
Yakushev, V.
Yoon, C. S.
Yoshida, J.
Zaitsev, Y.
Zemskova, S.
Zghiche, A.
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 neutrinos with respect to the one computed assuming the speed of light in vacuum of (6.5 +/- 7.4 (stat.)(-8.0)(+8.3)(sys.)) ns was measured corresponding to a relative difference of the muon neutrino velocity with respect to the speed of light (v - c)/c = (2.7 +/- 3.1 (stat.)(-3.3)(+1.34)(sys.)) x 10(-6). The above result, obtained by comparing the time distributions of neutrino interactions and of protons hitting the CNGS target in 10.5 mu s long extractions, was confirmed by a test performed at the end of 2011 using a short bunch beam allowing to measure the neutrino time of flight at the single interaction level


Measurement of the neutrino velocity with the OPERA detector in the CNGS beam using the 2012 dedicated data
Adam, T.; et. al. (2013-01-01)
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 informat...
Measurement of the atmospheric muon charge ratio with the OPERA detector
Agafonova, N.; et. al. (2010-05-01)
The OPERA detector at the Gran Sasso underground laboratory (LNGS) was used to measure the atmospheric muon charge ratio R-mu = N-mu+/N-mu- in the TeV energy region. We analyzed 403069 atmospheric muons corresponding to 113.4 days of livetime during the 2008 CNGS run. We computed separately the muon charge ratio for single and for multiple muon events in order to select different energy regions of the primary cosmic ray spectrum and to test the R-mu dependence on the primary composition. The measured R-mu v...
Measurement of underlying event characteristics using charged particles in pp collisions at root s = 900 GeV and 7 TeV with the ATLAS detector
Aad, G.; et. al. (American Physical Society (APS), 2011-05-31)
Measurements of charged particle distributions, sensitive to the underlying event, have been performed with the ATLAS detector at the LHC. The measurements are based on data collected using a minimum-bias trigger to select proton-proton collisions at center-of-mass energies of 900 GeV and 7 TeV. The "underlying event'' is defined as those aspects of a hadronic interaction attributed not to the hard scattering process, but rather to the accompanying interactions of the rest of the proton. Three regions are d...
Measurement of the top quark pair cross section with ATLAS in pp collisions at root s=7 TeV using final states with an electron or a muon and a hadronically decaying tau lepton
Aad, G.; et. al. (Elsevier BV, 2012-10-22)
A measurement of the cross section of top quark pair production in proton-proton collisions recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 7 TeV is reported. The data sample used corresponds to an integrated luminosity of 2.05 fb(-1). Events with an isolated electron or muon and a tau lePton decaying hadronically are used. In addition, a large missing transverse momentum and two or more energetic jets are required. At least one of the jets must be identified as o...
Measurement of the W charge asymmetry in the W -> mu nu decay mode in pp collisions at root s=7 TeV with the ATLAS detector
Aad, G.; et. al. (Elsevier BV, 2011-06-27)
This Letter reports a measurement of the muon charge asymmetry from W bosons produced in proton-proton collisions at a centre-of-mass energy of 7 TeV with the ATLAS experiment at the LHC. The asymmetry is measured in the W -> mu nu decay mode as a function of the muon pseudorapidity using a data sample corresponding to a total integrated luminosity of 31 pb(-1). The results are compared to predictions based on next-to-leading order calculations with various parton distribution functions. This measurement pr...
Citation Formats
T. Adam et al., “Measurement of the neutrino velocity with the OPERA detector in the CNGS beam,” JOURNAL OF HIGH ENERGY PHYSICS, pp. 0–0, 2012, Accessed: 00, 2020. [Online]. Available: