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Search for heavy neutrinos mixing with tau neutrinos


Astier, P.; Autiero, D.; Baldisseri, A.; Baldo-Ceolin, M.; Banner, M.; Bassompierre, G.; Benslama, K.; Besson, N.; Bird, I.; Blumenfeld, B. et al.
Search for heavy neutrinos mixing with tau neutrinos // Physics Letters B, 506 (2001), 27-38 (međunarodna recenzija, članak, znanstveni)


Naslov
Search for heavy neutrinos mixing with tau neutrinos

Autori
Astier, P. ; Autiero, D. ; Baldisseri, A. ; Baldo-Ceolin, M. ; 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. ; Gangler, E. ; Geiser, A. ; Geppert, D. ; Gibin, D. ; Gninenko, S. ; Godley, A. ; Gonzales-Garcia, M.C. ; 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. ; Krasnikov, N.V. ; Krasnoperov, A. ; Lacaprara, S. ; Lauchaud, C. ; Lakić, Biljana ; Lanza, A. ; La Rotonda, L. ; Laveder, M. ; Letessier-Selvon, A. ; Levy, J.M. ; Linssen, L. ; Ljubičić, Ante ; Long, J. ; Lupi, A. ; Marchionni, A. ; Martelli, F. ; Mechain, X. ; Mendiburu, J.-P. ; Meyer, J.P. ; Mezzetto, M. ; Mishra, S.R. ; Moorhead, G.F. ; Naumov, D. ; Nedelec, P. ; Nefedov, Yu. ; Nguyen-Mau, C. ; Orestano, D. ; Pastore, F. ; Peak, L.S. ; Pennacchio, E. ; Pessard, H. ; Petti, R. ; Placci, A. ; Polesello, G. ; Pollmann, D. ; Polyarush, P. ; Popov, B. ; Poulsen, C. ; Rathouit, P. ; Rico, J. ; Roda, C. ; Rubbia, A. ; Salvatore, F. ; Schahmaneche, K. ; Schmidt, B. ; Segneri, G. ; Sevior, M. ; Soler, F.J.P. ; Sozzi, G. ; Steele, D. ; Stiegler, U. ; Stipčević, Mario ; Stolarczyk, T. ; Tareb-Reyes, M. ; Taylor, G.N. ; Tereschenko, 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. ; Vidal-Sitjes, G. ; Vieira, J.-M. ; Vinogradova, T. ; 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) 506 (2001); 27-38

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

Ključne riječi
Neutrino mixing; neutrino decay

Sažetak
We report on a search for heavy neutrinos ni_(4) produced in the decay D_s-->tau, ni_4 at the SPS proton target followed by the decay ni_4-->ni, tau e+e- in the NOMAD detector. Both decays are expected to occur if ni_4 is a component of ni_tau. From the analysis of the data collected during the 1996-1998 runs with 4.1×10^19 protons on target, a single candidate event consistent with background expectations was found. This allows to derive an upper limit on the mixing strength between the heavy neutrino and the tau neutrino in the ni_4 mass range from 10 to 190 MeV. Windows between the SN1987a and Big Bang Nucleosynthesis lower limits and our result are still open for future experimental searches. The results obtained are used to constrain an interpretation of the time anomaly observed in the KARMEN1 detector.

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