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A more sensitive search for nu_mu to nu_tau oscillations in NOMAD


Astier, P.; Autiero, D.; Baldisseri, A.; Baldo-Ceolin, M.; Ballocchi, G.; Banner, M.; Bassompierre, G.; Benslama, K.; Besson, N.; Bird, I. et al.
A more sensitive search for nu_mu to nu_tau oscillations in NOMAD // Physics letters B, 453 (1999), 1-2; 169-186 (međunarodna recenzija, članak, znanstveni)


Naslov
A more sensitive search for nu_mu to nu_tau oscillations in NOMAD

Autori
Astier, P. ; Autiero, D. ; Baldisseri, A. ; Baldo-Ceolin, M. ; Ballocchi, G. ; Banner, M. ; Bassompierre, G. ; Benslama, K. ; Besson, N. ; Bird, I. ; Blumenfeld, B. ; Bobisut, F. ; Bouchez, J. ; Boyd, S. ; Bueno, A. ; Bunyatov, S. ; Camilleri, L. ; Cardini, A. ; Cattaneo, P.W. ; Cavasinni, V. ; Cervera-Villanueva, A. ; Collazuol, G. ; Conforto, G. ; Conta, C. ; Contalbrigo, M. ; Cousins, R. ; Daniels, D. ; Degaudenzi, H. ; Del Prete, T. ; De Santo, A. ; Dignan, T. ; Di Lella, L. ; do Couto e Silva, E. ; Donnelly, I.J. ; Dumarchez, J. ; Ellis, M. ; Fazio, T. ; Feldman, G.J. ; Ferrari, R. ; Ferrere, D. ; Flaminio, V. ; Fraternali, M. ; Gaillard, J.M. ; Gandolfo, A. ; Gangler, E. ; Geiser, A. ; Geppert, D. ; Gibin, D. ; Gninenko, S. ; Godley, A. ; Gomez-Cadenas, J.J. ; Gosset, J. ; Goessling, C. ; Gouanere, M. ; Grant, A. ; Graziani, G. ; Guglielmi, A. ; Hagner, C. ; Hernando, J. ; Hubbard, D. ; Hurst, P. ; Hyett, N. ; Iacopini, E. ; Joseph, C. ; Juget, F. ; Kirsanov, M.M. ; Klimov, O. ; Kokkonen, J. ; Kovzelev, A. ; Krasnoperov, A. ; Kuznetsov, V.E. ; Lacaprara, S. ; Lachuad, C. ; Lakić, Biljana ; Lanza, A. ; La Rotonda, L. ; Laveder, M. ; C. ; Lazzeroni, C. ; Letessier-Selvon, A. ; Levy, J.M. ; Linssen, L. ; Ljubičić, Ante ; Long, J. ; Lupi, A. ; Manola-Poggioli, E. ; Marchionni, A. ; Martelli, F. ; Mechain, X. ; Mendiburu, J.-P. ; Meyer, J.P. ; Mezzetto, M. ; Mishra, S.R. ; Moorhead, G.F. ; Mossuz, L. ; Nedelec, P. ; Nefedov, Yu. ; Nguyen-Mau, C. ; Nordmann, D. ; Orestano, D. ; Pastore, F. ; Peak, L.S. ; Pennacchio, E. ; Pessard, H. ; Petti, R. ; Placci, A. ; Pluquet, A. ; Polesello, G. ; Pollmann, D. ; Popov, B. ; Poulsen, C. ; Rathouit, P. ; Renzoni, G. ; Rico, J. ; Roda, C. ; Rubbia, A. ; Salvatore, F. ; Schahmaneche, K. ; Schmidt, B. ; Schmidt, T. ; Segneri, G. ; Sevior, M. ; Sillou, D. ; Soler, F.J.P. ; Sozzi, G. ; Steele, D. ; Steffen, P. ; Steininger, M. ; Stiegler, U. ; Stipčević, Mario ; Stolarczyk, T. ; Tareb-Reyes, M. ; Taylor, G.N. ; Tereshchenko, V. ; Toropin, A. ; Touchard, A.-M. ; Tovey, S.N. ; Tran, M.-T. ; Tsesmelis, E. ; Ulrichs, J. ; Vacavant, L. ; Valdata-Nappi, M. ; Valuev, V. ; Vannucci, F. ; Varvell, K.E. ; Veltri, M. ; Vercesi, V. ; Verkindt, D. ; Vieira, J.-M. ; Vinogradova, T. ; Vo, M.-K. ; Volkov, S. ; Weber, F.V. ; Weisse, T. ; Wilson, F.F. ; Winton, L.J. ; Yabsley, B.D. ; Zaccone, H. ; Zuber, K. ; Zuccon, P.

Izvornik
Physics letters B (0370-2693) 453 (1999), 1-2; 169-186

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Neutrino oscillations

Sažetak
With additional data and improved algorithms, we have enhanced the sensitivity of our appearance sear for nu_mu to nu_tau oscillations in the NOMAD detector in the CERN-SPS wide-band neutrino beam. The search uses kinematic criteria to identify nu_tau charged interactions followed by decay of the tau^- to one of several decay modes. Our "blind" analyses of deep-inelastic scattering data taken in 1996 and 1997, combined with consistent reanalyses of previously reported 1995 data, yield no oscillation signal. For the two-family oscillation scenario, we present the contour outlining a 90% C.L. confidence region in the sin^2 2theta_mu tau-Delta m^2 plane. At large Delta m^2, the confidence region includes sin^2 theta_micro thau<1.2x10^-3 (a limit 3.5 times more stringent than in our previous publication), while at sin^2 2theta_microthau=1, the confidence region includes Delta m^2<1.2 eV^2/c^4

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
00980204

Ustanove
Institut "Ruđer Bošković", Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus