Search for heavy neutrinos mixing with tau neutrinos

Astier, P. et al. (2001) Search for heavy neutrinos mixing with tau neutrinos. Physics Letters B, 506(1-2), 27 -38. (doi: 10.1016/S0370-2693(01)00362-8)

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We report on a search for heavy neutrinos ( nu /sub 4/) produced in the decay D/sub s/ to tau nu /sub 4/ at the SPS proton target followed by the decay nu /sub 4/ to nu /sub tau /e/sup +/e/sup -/ in the NOMAD detector. Both decays are expected to occur if nu /sub 4/ is a component of nu /sub tau /. From the analysis of the data collected during the 1996-1998 runs with 4.1*10/sup 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 nu /sub 4/ mass range from 10 to 190 MeV. Windows between the SN1987 A 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.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Soler, Professor Paul
Authors: 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.N., Godley, A., Gonzalez-Garcia, M.C., Gomez-Cadenas, J.J., Gosset, J., Gossling, C., Gouanere, M., Grant, A., Graziani, G., Guglielmi, A., Hagner, C., Harnando, J., Hubbard, D., Hurst, P., Hyett, N., Iacopini, E., Joseph, C., Juget, F., Kirsanov, M.M., Klimov, O., Kokkonen, J., Kovzelev, A.V., Krasnikov, N.V., Krasnoperov, A., Lacaprara, S., Lachaud, C., Lakic, B., Lanza, A., La Rotonda, L., Laveder, M., Letessier-Selvon, A., Levy, J.M., Linssen, L., Ljubicic, A., 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, Y., Nguyen-Mau, C., Orestano, D., Pastore, F., Peak, L.S., Pennacchio, E., Pessard, H., Petti, R., Placci, A., Polesello, G., Pollmann, D., Polyarush, A., 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., Stipcevic, M., Stolarczyk, T., Tareb-Reyes, M., Taylor, G.N., Tershchenko, V., Toropin, A.N., Touchard, A.M., Tovey, S.N., Tran, M.T., Tsesmelis, E., Ulrichs, J., Vacavant, L., Valdatas-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., and Zuccon, P.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physics Letters B
Publisher:Elsevier BV
ISSN (Online):1873-2445

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