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6 results on '"Challis, R"'

1. Search for $\nu_{\mu} \to \nu_{e}$ oscillations in the NOMAD experiment

Author

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., Challis, R., 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., Dumarchez, J., Ellis, M., 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., Gomez-Cadenas, J J., Gosset, J., Gossling, 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., Kent, N., Kirsanov, M., Klimov, O., Kokkonen, J., Kovzelev, A., Krasnoperov, A., 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, Yu., 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., Rico, J., Riemann, P., Roda, C., Rubbia, A., Salvatore, F., Schahmaneche, K., Schmidt, B., Schmidt, T., Sevior, M., Sillou, D., Soler, F J P., Sozzi, Gabriella, Steele, D., Stiegler, U., Stipcevic, M., 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., 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., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), and NOMAD

Subjects
Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment
Abstract

Neutrinos; We present the results of a search for nu_mu → nu_e oscillations in the NOMAD experiment at Cern. The experiment looked for the appearance of nu_e in a predominantly nu_mu wide-band neutrino beam at the CERN SPS. No evidence for oscillations was found. The 90% confidence limits obtained are Delta m^2 < 0.4 eV^2 for maximal mixing and sin^2(2theta) < 1.4 X 10^-3 for large Delta m^2. This result excludes the LSND allowed region of oscillation parameters with Delta m^2 >~ 10 eV^2.

Published
2003
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2. A study of strange particle production in $\nu_\mu$ charged current interactions in the NOMAD experiment

Author

Astier, P., Autiero, D., Baldisseri, A., Baldo-Ceolin, M., Banner, M., Bassompierre, G., 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., Challis, R., Collazuol, G., Conforto, G., Conta, C., Contalbrigo, M., Cousins, R., Daniels, D., Degaudenzi, H., Del Prete, T., Santo, A., Dignan, T., Di Lella, L., Do Couto, E. Silva E., 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., Gomez-Cadenas, J. J., Gosset, J., Gossling, C., Gouanere, M., Grant, A., Graziani, G., Guglielmi, A., Hagner, C., Hernando, J., Hurst, P., Hyett, N., Iacopini, E., Joseph, C., Juget, F., Kent, N., Kirsanov, M., Klimov, O., Kokkonen, J., Kovzelev, A., Krasnoperov, A., Kustov, D., Kuznetsov, V., Lacaprara, S., Lachaud, C., Lakic, B., Lanza, A., La Rotonda, L., Laveder, M., antoine letessier selvon, 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., Yu. Nefedov, 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., Rico, J., Riemann, P., Roda, C., Rubbia, A., Salvatore, F., Schahmaneche, K., Schmidt, B., Schmidt, T., Sevior, M., Sillou, D., Soler, F. J. P., Steele, D. D., Stiegler, U., Stipcevic, M., 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., 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., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), NOMAD, and BOMBAR, Claudine

Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment
Abstract

Neutrinos; A study of strange particle production in $\nu_\mu$ charged current interactions has been performed using the data from the NOMAD experiment. Yields of neutral strange particles ($\ko$, $\lam$, $\alam$) have been measured. Mean multiplicities are reported as a function of the event kinematic variables $E_\nu$, $W^2$ and $Q^2$ as well as of the variables describing particle behaviour within a hadronic jet: $x_F$, $z$ and $p_T^2$. Decays of resonances and heavy hyperons with identified $\ko$ and $\lam$ in the final state have been analyzed. Clear signals corresponding to $\rm {K^\star}^\pm$ $\rm {\Sigma^\star}^\pm$, $\rm \Xi^-$ and $\rm \Sigma^0$ have been observed.

Published
2002

3. Study of $D^{*+}$ production in $\nu_{\mu}$ charged current interactions in the NOMAD experiment

Author

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., Challis, R., Collazuol, G., Conforto, G., Conta, C., Contalbrigo, M., Cousins, R., Daniels, D., Degaudenzi, H., Del Prete, T., Santo, A., Dignan, T., Di Lella, L., Do Couto, E. Silva E., 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., Gomez-Cadenas, J. J., Gosset, J., Gossling, 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., Kent, N., Kirsanov, M., Klimov, O., Kokkonen, J., Kovzelev, A., Krasnoperov, A., Kustov, D., Kuznetsov, V., Lacaprara, S., Lachaud, C., Lakic, B., Lanza, A., La Rotonda, L., Laveder, M., antoine letessier selvon, 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., Yu. Nefedov, 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., Rico, J., Riemann, P., Roda, C., Rubbia, A., Salvatore, F., Schahmaneche, K., Schmidt, B., Schmidt, T., Sevior, M., Sillou, D., Soler, F. J. P., Gabriella Sozzi, Steele, D. D., Stiegler, U., 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., Vidal-Sitjes, G., Vieira, J. M., Vinogradova, T., Weisse, T., Wilson, F. F., Winton, L. J., Yabsley, B. D., Zaccone, H., Zuber, K., Zuccon, P., Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), NOMAD, and BOMBAR, Claudine

Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, Astrophysics::Galaxy Astrophysics
Abstract

Neutrinos; A search was made among $\nu_\mu$ charged current events collected in the NOMAD experiment for the reaction: $\nu_\mu + N \rightarrow \mu^- + D^{\star+} + hadrons \hookrightarrow D^0 + \pi^+ \hookrightarrow K^- + \pi^+ A $D^{\star+}$ sample composed of 47 events, with 90% purity, was extracted. The $D^{\star+}$ yield in $\nu_\mu$ charged current interactions was measured to be $T = (0.99 \pm 0.15(stat.) \pm 0.11(syst.))$%. The mean fraction of the hadronic jet energy taken by the $D^{\star+}$ is $0.67 \pm 0.02(stat) \pm 0.02(syst.)$. The distributions of the fragmentation variables $z$, ${P_{T}}^2$ and $x_F$ for $D^{\star+}$ are also presented.

Published
2002

4. A Search for Single Photon Events in Neutrino Interactions

Author

C. Joseph, F. Salvatore, D. Geppert, P.W. Cattaneo, Ante Ljubičić, Valerio Vercesi, Dmitry V. Naumov, Marco Laveder, Th. Stolarczyk, J-P. Meyer, Caroline Poulsen, A.M. Scott, K. Benslama, E. Pennacchio, N. Hyett, Marco Fraternali, Luca Rebuffi, D. Pollmann, J. A. Hernando, L.J. Winton, A. Lanza, Artem Chukanov, M. E. Sevior, J. Ulrichs, Kevin Varvell, J. Kokkonen, M. T. Tran, J. Long, M. Mezzetto, Q. Wu, O.L. Klimov, J.-P. Mendiburu, E. Tsesmelis, Caren Hagner, Kai Zuber, G. Sozzi, U. Stiegler, Alexey Krasnoperov, A.-M. Touchard, A. Cervera-Villanueva, K. Schahmaneche, C.T. Kullenberg, P. Hurst, T. Schmidt, E. Gangler, A. Grant, H. Pessard, P. Nedelec, Roberto Ferrari, L. Di Lella, H. Degaudenzi, M. Baldo-Ceolin, M. Banner, G. J. Feldman, G. F. Moorhead, Malcolm Ellis, A. Kovzelev, M. Valdata-Nappi, Didier Ferrere, J.J. Gómez-Cadenas, V. Flaminio, Mikhail Kirsanov, R. Cousins, F. J. P. Soler, Alessandro Cardini, Yu. Nefedov, L. Vacavant, J.-M. Vieira, Alexander Toropin, L. S. Peak, C. Lachaud, J.M. Gaillard, T. Weisse, F. Bobisut, J.J. Kim, Giacomo Graziani, A. Letessier-Selvon, J. Gosset, Sergei Gninenko, Giacomo Polesello, E. do Couto e Silva, André Rubbia, G. Bassompierre, Bruce Yabsley, X. Méchain, Antonio Bueno, M. Tareb-Reyes, T. Vinogradova, D. Gibin, G. Collazuol, Mario Stipčević, A. Placci, R. Petti, R. Challis, E. Iacopini, A. Godley, A. Polyarush, A. De Santo, S.A. Bunyatov, S. Boyd, J. Dumarchez, Vyacheslav Valuev, Achim Geiser, Vincenzo Cavasinni, B. Lakić, G. N. Taylor, Michel Gouanère, C. Conta, B. Schmidt, J. Bouchez, O. Samoylov, F. Martelli, M. Veltri, F. Vannucci, M.B. Seaton, Claus Gößling, G. Conforto, N. Kent, A. Lupi, V. V. Lyubushkin, V. Tereshchenko, A. Baldisseri, D. Steele, Barry Blumenfeld, Domizia Orestano, P. Zuccon, G. Vidal-Sitjes, Drew Dimmery, M. Contalbrigo, A. Marchionni, J. M. Levy, Sergey A. Kulagin, J. Rico, A. Sconza, Frédéric Juget, Chiara Roda, L. La Rotonda, S. R. Mishra, Stefano Lacaprara, Fergus Wilson, P. Riemann, B. A. Popov, L. Camilleri, S.N. Tovey, I. Bird, X.C. Tian, Fr Pastore, L. Linssen, Sergey Alekhin, F.V. Weber, C. Nguyen-Mau, T. Del Prete, P. Astier, D. Autiero, D. Sillou, A. Guglielmi, Nathalie Besson, H. Zaccone, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), APC - Neutrinos, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, NOMAD, Kullenberg, Ct, Mishra, Sr, Dimmery, D, Tian, Xc, Autiero, D, Gninenko, S, Rubbia, A, Alekhin, S, Astier, R, 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, Pw, Cavasinni, V, Cervera Villanueva, A, Challis, R, Chukanov, A, Collazuol, G, Conforto, G, Conta, C, Contalbrigo, M, Cousins, R, Degaudenzi, H, De Santo, A, Del Prete, T, Di Lella, L, Silva, Ede, Dumarchez, J, Ellis, M, Feldman, Gj, Ferrari, R, Ferrere, D, Flaminio, V, Fraternali, M, Gaillard, Jm, Gangler, E, Geiser, A, Geppert, D, Gibin, D, Godley, A, Gomez Cadenas, Jj, Gosset, J, Gossling, C, Gouanere, M, Grant, A, Graziani, G, Guglielmi, A, Hagner, C, Hernando, J, Hurst, P, Hyett, N, Iacopini, E, Joseph, C, Juget, F, Kent, N, Klimov, O, Kokkonen, J, Kovzelev, A, Krasnoperov, A, Kim, Jj, Kirsanov, M, Kulagin, S, Lacaprara, S, Lachaud, C, Lakic, B, Lanza, A, La Rotonda, L, Laveder, M, Letessier Selvon, A, Levy, Jm, Ling, J, Linssen, L, Ljubicic, A, Long, J, Lupi, A, Lyubushkin, V, Marchionni, A, Martelli, F, Mechain, X, Mendiburu, Jp, Meyer, Jp, Mezzetto, M, Moorhead, Cf, Naumov, D, Nedelec, R, Nefedov, Y, Nguyen Mau, C, Orestano, Domizia, Pastore, F, Peak, L, Pennacchio, E, Pessard, H, Petti, R, Placci, A, Polesello, G, Pollmann, D, Polyarush, A, Poulsen, C, Popov, B, Rebuffi, L, Rico, J, Riemann, P, Roda, C, Salvatore, F, Samoylov, O, Schahmaneche, K, Schmidt, B, Schmidt, T, Sconza, A, Scott, Am, Seaton, Mb, Sevior, M, Sillou, D, Soler, Fjr, Sozzi, G, Steele, D, Stiegler, U, Stipcevic, M, Stolarczyk, T, Tareb Reyes, M, Taylor, Gn, Tereshchenko, V, Toropin, A, Touchard, Am, Tovey, Sn, Tran, Mt, Tsesmelis, E, Ulrichs, J, Vacavant, L, Valdata Nappi, M, Valuev, V, Vannucci, F, Varvell, Ke, Veltri, M, Vercesi, V, Vidal Sitjes, G, Vieira, Jm, Vinogradova, T, Weber, Fv, Weissee, T, Wilson, Ff, Winton, Lj, Wu, Q, Yabsley, Bd, Zaccone, H, Zuber, K, Zuccon, R., Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), and Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, Particle physics, Photon, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, MiniBooNE, Neutral current, High Energy Physics - Experiment (hep-ex), Pion, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Neutrino, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Coherent, Single photon, 010306 general physics, Charged current, Physics, 010308 nuclear & particles physics, Física, Deep inelastic scattering, single photon, neutrino, neutral current, coherent, pion, High Energy Physics - Phenomenology, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, Event (particle physics), Particle Physics - Experiment
Abstract

We present a search for neutrino induced events containing a single, exclusive photon using data from the NOMAD experiment at the CERN SPS where the average energy of the neutrino flux is ≃25 GeV. The search is motivated by an excess of electron-like events in the 200-475 MeV energy region as reported by the MiniBooNE experiment. In NOMAD, photons are identified via their conversion to e + e - in an active target embedded in a magnetic field. The background to the single photon signal is dominated by the asymmetric decay of neutral pions produced either in a coherent neutrino-nucleus interaction, or in a neutrino-nucleon neutral current deep inelastic scattering, or in an interaction occurring outside the fiducial volume. All three backgrounds are determined in situ using control data samples prior to opening the 'signal-box'. In the signal region, we observe 155 events with a predicted background of 129.2±8.5±3.3. We interpret this as null evidence for excess of single photon events, and set a limit. Assuming that the hypothetical single photon has a momentum distribution similar to that of a photon from the coherent π 0 decay, the measurement yields an upper limit on single photon events, Physics Letters B, 706 (4-5), ISSN:0370-2693, ISSN:0031-9163, ISSN:1873-2445

Published
2012
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5. Search for the exotic Θ+ resonance in the NOMAD experiment

Author

Malcolm Ellis, O.L. Klimov, J.J. Gómez-Cadenas, A. Polyarush, M. Mezzetto, J. Long, Y. Nefedov, S.R. Mishra, Domizia Orestano, Frédéric Juget, Kai Zuber, Achim Geiser, Chiara Roda, E. do Couto e Silva, G. Bassompierre, Kevin Varvell, K. Benslama, A. Grant, H. Pessard, P. Nedelec, M. Contalbrigo, F. Salvatore, C. Conta, D. Geppert, Mikhail Kirsanov, P.W. Cattaneo, Ante Ljubičić, B. Schmidt, J. M. Levy, R. Cousins, J. Rico, J-P. Meyer, I. Bird, Luca Rebuffi, S. Boyd, C. Lachaud, Valerio Vercesi, Artem Chukanov, J.-M. Vieira, L.J. Winton, J. A. Hernando, Giacomo Graziani, G. Collazuol, Mario Stipčević, M. T. Tran, Dmitry V. Naumov, B. Lakić, J. Ulrichs, G. Conforto, Alexey Krasnoperov, G. N. Taylor, A. Sconza, R. Challis, E. Gangler, E. Pennacchio, T. Dignan, G. Sozzi, N. Hyett, S.A. Bunyatov, M. Baldo-Ceolin, M. Banner, D. Pollmann, F. Bobisut, Alexander Toropin, L. S. Peak, Nathalie Besson, V. Flaminio, F. J. P. Soler, Claus Gößling, B. A. Popov, Antonio Bueno, André Rubbia, H. Zaccone, T. Vinogradova, D. Sillou, G. Vidal-Sitjes, C. Joseph, D. Steele, A. Cervera-Villanueva, A. Letessier-Selvon, Marco Fraternali, A. Baldisseri, A. Guglielmi, E. Tsesmelis, Caren Hagner, D. Daniels, V. V. Lyubushkin, Giacomo Polesello, E. Iacopini, M. Tareb-Reyes, Marco Laveder, A. Marchionni, L. Camilleri, J. Gosset, L. La Rotonda, Barry Blumenfeld, A. Placci, J.-P. Mendiburu, Vincenzo Cavasinni, A.-M. Touchard, H. Degaudenzi, Michel Gouanère, A. De Santo, J. Kokkonen, G. J. Feldman, T. Weisse, T. Schmidt, F. Martelli, G. F. Moorhead, R. Petti, Stefano Lacaprara, Fergus Wilson, Alessandro Cardini, N. Kent, P. Riemann, A. Godley, D. Gibin, L. Vacavant, A. Kovzelev, A. Lanza, J.M. Gaillard, M. Veltri, Didier Ferrere, Th. Stolarczyk, U. Stiegler, Sergei Gninenko, M. E. Sevior, Roberto Ferrari, J. Bouchez, O. Samoylov, A. Lupi, Bruce Yabsley, X. Méchain, J. Dumarchez, Vyacheslav Valuev, P. Astier, D. Autiero, F. Vannucci, D. Hubbard, P. Zuccon, V. Tereshchenko, Caroline Poulsen, K. Schahmaneche, P. Hurst, L. Di Lella, M. Valdata-Nappi, L. Linssen, F.V. Weber, S.N. Tovey, Fr Pastore, C. Nguyen-Mau, T. Del Prete, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), APC - Neutrinos, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), NOMAD, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire d'Annecy de Physique des Particules (LAPP), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Samoylov, O, Naumov, D, Cavasinni, V, 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, Pw, Cervera Villanueva, A, Challis, R, Chukanov, 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, Silva, Ede, Dumarchez, J, Ellis, M, Feldman, Gj, Ferrari, R, Ferrere, D, Flaminio, V, Fraternali, M, Gaillard, Jm, Gangler, E, Geiser, A, Geppert, D, Gibin, D, Gninenko, S, Godley, A, Gomez Cadenas, Jj, Gosset, J, Gossling, 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, Kent, N, Kirsanov, M, Klimov, O, Kokkonen, J, Kovzelev, A, Krasnoperov, A, Lacaprara, S, Lachaud, C, Lakic, B, Lanza, A, La Rotonda, L, Laveder, M, Letessier Selvon, A, Levy, Jm, Linssen, L, Ljubicic, A, Long, J, Lupi, A, Lyubushkin, V, Marchionni, A, Martelli, F, Mechain, X, Mendiburu, Jp, Meyer, Jp, Mezzetto, M, Mishra, Sr, Moorhead, Gf, Nedelec, P, Nefedov, Y, Nguyen Mau, C, Orestano, Domizia, Pastore, F, Peak, L, Pennacchio, E, Pessard, H, Petti, R, Placci, A, Polesello, G, Pollmann, D, Polyarush, A, Poulsen, C, Popov, B, Rebuffi, L, Rico, J, Riemann, P, Roda, C, Rubbia, A, Salvatore, F, Schahmaneche, K, Schmidt, B, Schmidt, T, Sconza, A, Sevior, M, Sillou, D, Soler, Fjp, Sozzi, G, Steele, D, Stiegler, U, Stipcevic, M, Stolarczyk, T, Tareb Reyes, M, Taylor, Gn, Tereshchenko, V, Toropin, A, Touchard, Am, Tovey, Sn, Tran, Mt, Tsesmelis, E, Ulrichs, J, Vacavant, L, Valdata Nappi, M, Valuev, V, Vannucci, F, Varvell, Ke, Veltri, M, Vercesi, V, Vidal Sitjes, G, Vieira, Jm, Vinogradova, T, Weber, Fv, Weisse, T, Wilson, Ff, Winton, Lj, Yabsley, Bd, Zaccone, H, Zuber, K, and Zuccon, P.

Subjects
Quark, Particle physics, Physics and Astronomy (miscellaneous), Proton, neutrino, nutrino oscillations, quarks, Electromagnetic Calorimeter, 7. Clean energy, 01 natural sciences, Particle identification, High Energy Physics - Experiment, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Muon neutrino, 010306 general physics, Engineering (miscellaneous), Charged current, Physics, Neutral current, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Física, Transition Radiation Detector, Positive-strangeness, Baryon, Photoproduction, High Energy Physics::Experiment, Neutrino, Particle Physics - Experiment, Charged Current Interactions
Abstract

12 pages, 16 figures.-- PACS nrs.: 13.15.+g; 13.60.Le; 13.87.Fh; 14.40.Ev.-- ISI Article Identifier: 000243973100007.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ex/0612063.-- et al., Printed version published in Jan 2007., A search for exotic Θ(+) baryon via Θ(+) -> p + K-S(0) decay mode in the NOMAD v(μ)N data is reported. The special background generation procedure was developed. The proton identification criteria are tuned to maximize the sensitivity to the Θ(+) signal as a function of x(F) which allows to study the Θ(+) production mechanism. We do not observe any evidence for the Θ(+) state in the NOMAD data. We provide an upper limit on Θ(+) production rate at 90% CL as 2.13 x 10(-3) per neutrino interaction., The experiment was supported by the following funding agencies: Australian Research Council (ARC) and Department of Education, Science, and Training (DEST), Australia; Institut National de Physique Nucléaire et Physique des Particules (IN2P3), Commissariat à l’Energie Atomique (CEA), France; Bundesministerium für Bildung und Forschung (BMBF, contract 05 6DO52), Germany; Istituto Nazionale di Fisica Nucleare (INFN), Italy; Joint Institute for Nuclear Research and Institute for Nuclear Research of the Russian Academy of Sciences, Russia; Fonds National Suisse de la Recherche Scientifique, Switzerland; Department of Energy, National Science Foundation (grant PHY-9526278), the Sloan and the Cottrell Foundations, USA.

Published
2007
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6. Production properties of $K*(892)\pm$ vector mesons and their spin alignment as measured in the NOMAD experiment

Author

J-P. Meyer, L.J. Winton, J. Rico, G. Bassompierre, J. Kokkonen, J. Ulrichs, D. Geppert, P.W. Cattaneo, Ante Ljubičić, V. Tereshchenko, P. Hurst, Rotonda L. La, T. Stolarczyk, M. Kirsanov, J. Long, G. Sozzi, F. Salvatore, S. Boyd, B. Lakić, G. N. Taylor, H. Degaudenzi, G. J. Feldman, M. Gouanère, Marco Fraternali, A. Kovzelev, M. Valdata-Nappi, D. Shih, L. S. Peak, R. Challis, S.A. Bunyatov, G. F. Moorhead, T. Dignan, V. V. Lyubushkin, Barry Blumenfeld, E. Naumova, O.L. Klimov, A. Polyarush, Caroline Poulsen, K. Benslama, S.R. Mishra, D. Steele, A. Lanza, L. Linssen, Giacomo Graziani, A. Letessier-Selvon, J.M. Gaillard, I. Bird, A. Baldisseri, Achim Geiser, Antonio Bueno, R. Das, M. T. Tran, V. Flaminio, A. N. Toropin, R. Cousins, Frédéric Juget, Chiara Roda, J. A. Hernando, Yu. Nefedov, L. Vacavant, F. J. P. Soler, A. Marchionni, J. M. Levy, D. Daniels, J.-M. Vieira, M. Tareb-Reyes, F. Vannucci, E. Gangler, F.V. Weber, Santo A. De, P. Astier, T. Vinogradova, M. E. Sevior, André Rubbia, F. Bobisut, C. Lachaud, Domizia Orestano, Roberto Ferrari, M. Contalbrigo, S.N. Tovey, R. Petti, Stefano Lacaprara, Fergus Wilson, E. Iacopini, M. Banner, Malcolm Ellis, J.-P. Mendiburu, Claus Gössling, M. Mezzetto, Fr Pastore, Kai Zuber, G. Vidal-Sitjes, A. Cervera-Villanueva, L. Camilleri, Alessandro Cardini, A. Sconza, Vincenzo Cavasinni, J.J. Gómez-Cadenas, Valerio Vercesi, F. Martelli, D. Sillou, N. Kent, D. Autiero, T. Weisse, Prete T. Del, G. Collazuol, Mario Stipčević, T. M. Hong, Lella Luigi Di, Bruce Yabsley, X. Méchain, Luca Rebuffi, Artem Chukanov, Dmitry V. Naumov, B. A. Popov, J. Gosset, C. Conta, B. Schmidt, Kevin Varvell, V. Yu Valuev, C. Nguyen-Mau, A. M. Touchard, G. Polesello, G. Conforto, D. Gibin, A. Grant, P. Nedelec, A. Placci, E. Pennacchio, N. Hyett, Couto E. Silva E. Do, Nathalie Besson, D. Pollmann, A. Godley, U. Stiegler, A. Guglielmi, M. Veltri, H. Zaccone, C. Joseph, Marco Laveder, Alexey Krasnoperov, M. Baldo-Ceolin, D. Hubbard, P. Zuccon, K. Schahmaneche, H. Pessard, J. Dumarchez, Didier Ferrere, Sergei Gninenko, J. Bouchez, A. Lupi, E. Tsesmelis, Caren Hagner, T. Schmidt, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), European Organization for Nuclear Research (CERN), Istituto Nazionale di Fisica Nucleare, Sezione di Firenze (INFN, Sezione di Firenze), Istituto Nazionale di Fisica Nucleare (INFN), NOMAD, Chukanov, A, Naumov, D, Popov, B, 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, Pw, Cavasinnil, V, Cervera Villanueva, A, Challis, R, Collazuol, G, Conforto, G, Conta, C, Contalbrigo, M, Cousins, R, Daniels, D, Degaudenzi, H, Del Pretel, T, De Santo, A, Dignan, T, Di Lella, L, Silva, Edc, Dumarchez, J, Ellis, M, Feldman, Gj, Ferrari, R, Ferrere, D, Flaminio, V, Fraternali, M, Gaillard, Jm, Gangler, E, Geiser, A, Geppert, D, Gibin, D, Gninenko, S, Godleyl, A, Gomez Cadenas, Jj, Gosset, J, Gossing, C, Gouanere, M, Grants, A, Graziani, G, Guglielmi, A, Hagnerl, C, Hernando, J, Hubbard, D, Hurst, P, Hyett, N, Iacopini, E, Joseph, C, Juget, F, Kent, N, Kirsanov, M, Klimov, O, Kokkonen, J, Kovzelev, A, Krasnoperov, A, Lacaprara, S, Lachaud, C, Lakic, B, Lanza, A, La Rotonda, L, Laveder, M, Letessier Selvon, A, Levy, Jm, Linssen, L, Ljubicic, A, Long, J, Lupi, A, Lyubushkin, V, Marchionni, A, Martellil, F, Mechain, X, Mendiburu, Jp, Meyer, Jp, Mezzetto, M, Mishra, Sr, Moorhead, Gf, Nedelec, P, Nefedov, Y, Nguyen Mau, C, Orestano, Domizia, Pastore, F, Peak, L, Pennacchio, E, Pessard, H, Petti, R, Placci, A, Polesello, G, Pollmann, D, Polyarush, A, Poulsen, C, Rebuffi, L, Reno, R, Rico, J, Riemann, P, Roda, C, Rubbia, A, Salvatore, F, Samoylov, O, Schahmaneche, K, Schmidt, B, Schmidt, T, Sconza, A, Sevior, M, Sillou, D, Soler, Fjp, Sozzi, G, Steele, D, Stiegler, U, Stipcevic, M, Stolarczyk, T, Tareb Reyes, M, Taylor, Gn, Tereshchenko, V, Toropin, A, Touchard, Am, Tovey, Sn, Tran, Mt, Tsesmelis, E, Ulrichs, J, Vacavant, L, Valdata Nappi, M, Valuev, V, Vannucci, F, Varvell, Ke, Veltri, M, Vercesi, V, Vidal Sitjes, G, Vieira, Jm, Vinogradova, T, Weber, Fv, Weisse, T, Wilson, Ff, Winton, Lj, Yabsley, Bd, Zacconel, H, Zei, R, Zuber, K, and Zuccon, P.

Subjects
Particle physics, Physics and Astronomy (miscellaneous), Meson, Analytical chemistry, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Charged current, Spin-½, Physics, Annihilation, Neutral current, 010308 nuclear & particles physics, Física, Full data, Production (computer science), High Energy Physics::Experiment, Particle Physics - Experiment
Abstract

First measurements of K*(892) mesons production properties and their spin alignment in nu_mu charged current (CC) and neutral current (NC) interactions are presented. The analysis of the full data sample of the NOMAD experiment is performed in different kinematic regions. For K*+ and K*- mesons produced in nu_mu CC interactions and decaying into K0 pi+/- we have found the following yields per event: (2.6 +/- 0.2 (stat.) +/- 0.2 (syst.))% and (1.6 +/- 0.1 (stat.) +/- 0.1 (syst.))% respectively, while for the K*+ and K*- mesons produced in nu NC interactions the corresponding yields per event are: (2.5 +/- 0.3 (stat.) +/- 0.3 (syst.))% and (1.0 +/- 0.3 (stat.) +/- 0.2 (syst.))%. The results obtained for the rho00 parameter, 0.40 +/- 0.06 (stat) +/- 0.03 (syst) and 0.28 +/- 0.07 (stat) +/- 0.03 (syst) for K*+ and K*- produced in nu_mu CC interactions, are compared to theoretical predictions tuned on LEP measurements in e+e- annihilation at the Z0 pole. For K*+ mesons produced in nu NC interactions the measured rho00 parameter is 0.66 +/- 0.10 (stat) +/- 0.05 (syst)., 20 pp

Published
2006
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