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1. A Grid service broker for scheduling e-Science applications on global data Grids

Author

L.J. Winton, Srikumar Venugopal, and Rajkumar Buyya

Subjects
Database, Data grid, Computer Networks and Communications, Computer science, Distributed computing, Testbed, computer.software_genre, Grid, Computer Science Applications, Theoretical Computer Science, Scheduling (computing), Computational Theory and Mathematics, Grid computing, e-Science, computer, Software
Abstract

The next generation of scientific experiments and studies, popularly called e-Science, is carried out by large collaborations of researchers distributed around the world engaged in analysis of huge collections of data generated by scientific instruments. Grid computing has emerged as an enabler for e-Science as it permits the creation of virtual organizations that bring together communities with common objectives. Within a community, data collections are stored or replicated on distributed resources to enhance storage capability or efficiency of access. In such an environment, scientists need to have the ability to carry out their studies by transparently accessing distributed data and computational resources. In this paper, we propose and develop a Grid broker that mediates access to distributed resources by (a) discovering suitable data sources for a given analysis scenario, (b) suitable computational resources, (c) optimally mapping analysis jobs to resources, (d) deploying and monitoring job execution on selected resources, (e) accessing data from local or remote data source during job execution and (f) collating and presenting results. The broker supports a declarative and dynamic parametric programming model for creating grid applications. We have used this model in grid-enabling a high energy physics analysis application (Belle Analysis Software Framework). The broker has been used in deploying Belle experiment data analysis jobs on a grid testbed, called Belle Analysis Data Grid, having resources distributed across Australia interconnected through GrangeNet.

Published
2006

2. [Untitled]

Author

L.J. Winton

Subjects
Particle physics, Computer science, Astronomy and Astrophysics, Supercomputer, Grid, computer.software_genre, Semantic grid, Resource (project management), Work (electrical), Grid computing, Utility computing, Space and Planetary Science, e-Science, computer
Abstract

The University of Melbourne, Experimental Particle Physics group recognises that the future of computing is an important issue for the scientific community. It is in the nature of research for the questions posed to become more complex, requiring larger computing resources for each generation of experiment. As institutes and universities around the world increasingly pool their resources and work together to solve these questions, the need arises for more sophisticated com- puting techniques. One such technique, grid computing, is under investigation by many institutes across many disciplines and is the focus of much development in the computing community. 'The Grid', as it is commonly named, is heralded as the future of computing for research, education, and industry alike. This paper will introduce the basic concepts of grid technologies including the Globus toolkit and data grids as of July 2002. It will highlight the challenges faced in developing appropriate resource brokers and schedulers, and will look at the future of grids within high energy physics.

Published
2003

3. New results on a search for a 33.9 MeV/c2 neutral particle from π+ decay in the NOMAD experiment

Author

T. Weisse, J.-P. Mendiburu, K. Benslama, H. Zaccone, Alessandro Cardini, H. Pessard, Marco Fraternali, P. Rathouit, C. Joseph, Fr Pastore, B. A. Popov, P. Hurst, V. Flaminio, M. T. Tran, C. Lachaud, F. J. P. Soler, L. Di Lella, Giacomo Graziani, G. Bassompierre, S. Boyd, M. Valdata-Nappi, Marco Laveder, J.M. Gaillard, Roberto Ferrari, B. Lakić, G. N. Taylor, D. Steele, E. Gangler, J. Dumarchez, M. C. Gonzalez-Garcia, K. Schahmaneche, F. Juget, J. A. Hernando, Malcolm Ellis, M. Kirsanov, Th. Stolarczyk, A.-M. Touchard, O. Klimov, R. Cousins, Bruce Yabsley, J.J. Gómez-Cadenas, X. Méchain, J. Rico, A. Marchionni, J.-M. Vieira, Valerio Vercesi, A. Cervera-Villanueva, M. E. Sevior, Dmitry V. Naumov, Kevin Varvell, C. Nguyen-Mau, A. Placci, L. Camilleri, R. Petti, Stefano Lacaprara, A. Kovzelev, Fergus Wilson, T. Del Prete, Caroline Poulsen, E. do Couto e Silva, F. Salvatore, Vyacheslav Valuev, A. De Santo, E. Pennacchio, N. Hyett, S.A. Bunyatov, J. Bouchez, F. Vannucci, M. Gouanère, H. Degaudenzi, G. J. Feldman, J-P. Meyer, S. N. Tovey, I. Bird, A. Lupi, G. F. Moorhead, A. Grant, D. Hubbard, P. Zuccon, J.-M. Levy, G. Collazuol, Mario Stipčević, Didier Ferrere, G. Conforto, Barry Blumenfeld, L.J. Winton, A. Baldisseri, Claus Gößling, J. Kokkonen, G. Vidal-Sitjes, Sergei Gninenko, A. Krasnoperov, P. Nédélec, M. Mezzetto, T. Vinogradova, Nathalie Besson, D. Sillou, J. Ulrichs, Kai Zuber, E. Tsesmelis, Caren Hagner, T. Fazio, André Rubbia, A. Godley, G. Sozzi, A. Guglielmi, S.R. Mishra, Chiara Roda, L. Linssen, D. Pollmann, E. Iacopini, P. Astier, D. Autiero, F.V. Weber, A. Letessier-Selvon, D. Daniels, Giacomo Polesello, M. Tareb-Reyes, Vincenzo Cavasinni, J. Long, Domizia Orestano, F. Martelli, M. Contalbrigo, T. Dignan, U. Stiegler, A. Lanza, J. Gosset, D. Gibin, A. Polyarush, Achim Geiser, L. S. Peak, M. Veltri, Antonio Bueno, A. N. Toropin, L. La Rotonda, M. Baldo-Ceolin, M. Banner, D. Geppert, P.W. Cattaneo, Ante Ljubičić, F. Bobisut, N.V. Krasnikov, C. Conta, B. Schmidt, Yu. Nefedov, L. Vacavant, and V. Tereshchenko

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Neutrino decay, Neutrino mixing, Branching fraction, Nuclear physics, Pion, Pi, Direct search, Anomaly (physics), Neutral particle, Event (particle physics), KARMEN
Abstract

We report on a direct search in NOMAD for a new 33.9 MeV/c^2 neutral particle (X) produced in pion decay in flight, pi-->mu_X followed by the decay X -->nu e^+e^-. Both decays are postulated to occur to explain the time anomaly observed by the KARMEN experiment. 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. The search is sensitive to a pion branching ratio BR(pi-->muX >3.7×10^-15, significantly smaller than previous experimental limits.

Published
2002

4. Final NOMAD results on νμ→ντ and νe→ντ oscillations including a new search for ντ appearance using hadronic τ decays

Author

P Astier, D Autiero, A Baldisseri, M Baldo-Ceolin, M Banner, G Bassompierre, K Benslama, N Besson, I Bird, B Blumenfeld, F Bobisut, J Bouchez, S Boyd, A Bueno, S Bunyatov, L Camilleri, A Cardini, P.W Cattaneo, V Cavasinni, A Cervera-Villanueva, A Chukanov, G Collazuol, G Conforto, C Conta, M Contalbrigo, R Cousins, D Daniels, H Degaudenzi, T Del Prete, A De Santo, T Dignan, L Di Lella, E do Couto e Silva, J Dumarchez, M Ellis, G.J Feldman, R Ferrari, D Ferrère, V Flaminio, M Fraternali, J.-M Gaillard, E Gangler, A Geiser, D Geppert, D Gibin, S Gninenko, A Godley, J.-J Gomez-Cadenas, J Gosset, C Gößling, M Gouanère, A Grant, G Graziani, A Guglielmi, C Hagner, J Hernando, D Hubbard, P Hurst, N Hyett, E Iacopini, C Joseph, F Juget, M Kirsanov, O Klimov, J Kokkonen, A Kovzelev, A Krasnoperov, D Kustov, V.E Kuznetsov, S Lacaprara, C Lachaud, B Lakić, A Lanza, L La Rotonda, M Laveder, A Letessier-Selvon, J.-M Levy, L Linssen, A Ljubič, J Long, A Lupi, A Marchionni, F Martelli, X Méchain, J.-P Mendiburu, J.-P Meyer, M Mezzetto, S.R Mishra, G.F Moorhead, D Naumov, P Nédélec, Yu Nefedov, C Nguyen-Mau, D Orestano, F Pastore, L.S Peak, E Pennacchio, H Pessard, R Petti, A Placci, G Polesello, D Pollmann, A Polyarush, B Popov, C Poulsen, J Rico, P Riemann, C Roda, A Rubbia, F Salvatore, K Schahmaneche, B Schmidt, T Schmidt, A Sconza, M Sevior, D Sillou, F.J.P Soler, G Sozzi, D Steele, U Stiegler, M Stipč, Th Stolarczyk, M Tareb-Reyes, G.N Taylor, V Tereshchenko, A Toropin, A.-M Touchard, S.N Tovey, M.-T Tran, E Tsesmelis, J Ulrichs, L Vacavant, M Valdata-Nappi, V Valuev, F Vannucci, K.E Varvell, M Veltri, V Vercesi, G Vidal-Sitjes, J.-M Vieira, T Vinogradova, F.V Weber, T Weisse, F.F Wilson, L.J Winton, B.D Yabsley, H Zaccone, K Zuber, and P Zuccon

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Oscillation, 0103 physical sciences, Hadron, High Energy Physics::Experiment, Neutrino beam, 010306 general physics, 01 natural sciences, Lepton
Abstract

Results from the nu_tau appearance search in a neutrino beam using the full NOMAD data sample are reported. A new analysis unifies all the hadronic tau decays, significantly improving the overall sensitivity of the experiment to oscillations. The "blind analysis" of all topologies yields no evidence for an oscillation signal. In the two-family oscillation scenario, this sets a 90% C.L. allowed region in the sin^2(2theta)-Delta m^2 plane which includes sin^2(2theta) nu_tau oscillation hypothesis results in sin^2(2theta)

Published
2001

5. A study of backward going p and π− in interactions with the NOMAD detector

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Proton, 010308 nuclear & particles physics, Detector, Order (ring theory), 01 natural sciences, Momentum, 0103 physical sciences, Pi, Particle, Production (computer science), 010306 general physics
Abstract

Backward proton and $\pi^-$ production has been studied in $\nu_{\mu}CC$ interactions with carbon nuclei. Detailed analyses of the momentum distributions, of the production rates, and of the general features of events with a backward going particle, have been carried out in order to understand the mechanism producing these particles. The backward proton data have been compared with the predictions of the reinteraction and the short range correlation models.

Published
2001

6. Measurement of the polarization in νμ charged current interactions in the NOMAD experiment

Author

J. Long, J. Gosset, J.-P. Mendiburu, J. A. Hernando, Alessandro Cardini, D. Gibin, A. Letessier-Selvon, P. Hurst, L. S. Peak, T. Vinogradova, A. Placci, J.M. Gaillard, Barry Blumenfeld, L. Di Lella, D. Steele, D. Daniels, Giacomo Polesello, M. Tareb-Reyes, Th. Stolarczyk, D. Kustov, A. Polyarush, Kevin Varvell, M. E. Sevior, A. Cervera-Villanueva, A. De Santo, T. Dignan, C. Conta, M. Gouanere, G. Vidal-Sitjes, M. Kirsanov, Achim Geiser, Didier Ferrere, B. Schmidt, Antonio Bueno, R. Petti, A. Marchionni, R. Cousins, Fergus Wilson, O.L. Klimov, J.-M. Vieira, A. N. Toropin, A.-M. Touchard, T. Weisse, André Rubbia, G. Conforto, A. Grant, P. Nedelec, L. Camilleri, G. Bassompierre, M. Mezzetto, Caroline Poulsen, Artem Chukanov, E. Iacopini, S. Boyd, F. Martelli, B. Lakić, M. Veltri, G. Collazuol, Mario Stipčević, J. Kokkonen, G. N. Taylor, Sergei Gninenko, Kai Zuber, Malcolm Ellis, A. Kovzelev, Valentin Kuznetsov, Vincenzo Cavasinni, E. do Couto e Silva, J-P. Meyer, B. A. Popov, V. Flaminio, L.J. Winton, S.A. Bunyatov, Nathalie Besson, F. J. P. Soler, Roberto Ferrari, J. Ulrichs, Yu. Nefedov, L. Vacavant, J.J. Gómez-Cadenas, L. La Rotonda, G. Sozzi, I. Bird, A. Baldisseri, J. Bouchez, U. Stiegler, D. Geppert, P.W. Cattaneo, Ante Ljubičić, Bruce Yabsley, X. Méchain, A. Guglielmi, A. Lupi, P. Riemann, Claus Gößling, Alexey Krasnoperov, F. Salvatore, E. Tsesmelis, Caren Hagner, M. Baldo-Ceolin, M. Banner, A. Lanza, Marco Fraternali, T. Schmidt, A. Godley, M. T. Tran, E. Gangler, Valerio Vercesi, S.R. Mishra, M. Valdata-Nappi, Frédéric Juget, Chiara Roda, Vyacheslav Valuev, Dmitry V. Naumov, P. Astier, J. Rico, F. Vannucci, D. Autiero, E. Pennacchio, N. Hyett, D. Pollmann, D. Hubbard, P. Zuccon, H. Zaccone, T. Fazio, C. Joseph, H. Pessard, Domizia Orestano, Marco Laveder, L. Linssen, J. Dumarchez, M. Contalbrigo, F.V. Weber, J. M. Levy, H. Degaudenzi, G. J. Feldman, G. F. Moorhead, C. Lachaud, Giacomo Graziani, K. Schahmaneche, S. Lacaprara, V. Tereshchenko, F. Bobisut, C. Nguyen-Mau, T. Del Prete, D. Sillou, S.N. Tovey, and Fr Pastore

Subjects
Physics, Nuclear and High Energy Physics, Angular momentum, 010308 nuclear & particles physics, Elementary particle, Polarization (waves), 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Bubble chamber, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Nucleon, Charged current, Lepton, Boson
Abstract

The Λ polarization in νμ charged current interactions has been measured in the NOMAD experiment. The event sample (8087 reconstructed Λ 's) is more than an order of magnitude larger than that of previous bubble chamber experiments, while the quality of event reconstruction is comparable. We observe negative polarization along the W -boson direction which is enhanced in the target fragmentation region: Px(xF 0)=−0.09±0.06(stat)±0.03(sys) . These results provide a test of different models describing the nucleon spin composition and the spin transfer mechanisms. A significant transverse polarization (in the direction orthogonal to the Λ production plane) has been observed for the first time in a neutrino experiment: Py=−0.22±0.03(stat)±0.01(sys) . The dependence of the absolute value of Py on the Λ transverse momentum with respect to the hadronic jet direction is in qualitative agreement with the results from unpolarized hadron–hadron experiments.

Published
2001

7. Measurement of the polarization in charged current interactions in the NOMAD experiment

Author

T. Weisse, D. Sillou, F. Salvatore, Vyacheslav Valuev, A. Godley, A. Guglielmi, H. Zaccone, G. J. Feldman, G. F. Moorhead, C. Gssling, B. Schmidt, T. Fazio, O.L. Klimov, Laurent Vacavant, S. Tereshchenko, J. M. Levy, C. Joseph, Michel Gouanère, A. Placci, S.R. Mishra, F. F. Wilson, F. Bobisut, D. Autiero, Frédéric Juget, U. Stiegler, C. Nguyen-Mau, J. Long, E. Tsesmelis, Caren Hagner, R. Petti, D. Geppert, P.W. Cattaneo, Ante Ljubičić, Caroline Poulsen, A. De Santo, A. Polyarush, J.M. Gaillard, P. Rathouit, Achim Geiser, S.A. Bunyatov, J. Kokkonen, Marco Laveder, D. Hubbard, P. Zuccon, J.-P. Mendiburu, Artem Chukanov, J. A. Hernando, I. Bird, A. Lanza, K. Benslama, T. Vinogradova, R. Cousins, Alessandro Cardini, Marco Fraternali, L. La Rotonda, T. Schmidt, A. Lupi, J.-M. Vieira, D. Kustov, Didier Ferrere, L. Linssen, F. Vannucci, M. T. Tran, T. Dignan, T. Del Prete, L. S. Peak, A. M. Touchard, M. Contalbrigo, Roberto Ferrari, Valerio Vercesi, F.V. Weber, Nathalie Besson, C. Conta, M. Kirsanov, E. Gangler, G. Collazuol, Mario Stipčević, Malcolm Ellis, M. Valdata-Nappi, Sergei Gninenko, Antonio Bueno, A. N. Toropin, V. Flaminio, Domizia Orestano, P. Hurst, Kevin Varvell, Dmitry V. Naumov, G. Polesello, M. Banner, F. J. P. Soler, A. Baldisseri, P. Riemann, A. Letessier-Selvon, Alastair Grant, Bruce Yabsley, X. Méchain, André Rubbia, H. Degaudenzi, L. Di Lella, S. B. Boyd, J. Gosset, H. Pessard, P. Nedelec, Chiara Roda, D. Daniels, J.J. Gómez-Cadenas, D. Steele, G. Conforto, Barry Blumenfeld, J. Rico, C. Lachaud, A. Cervera-Villanueva, N. Hyett, D. Pollmann, G. Bassompierre, E. Iacopini, M. Tareb-Reyes, A. Marchionni, Valentin Kuznetsov, B. A. Popov, S. Lacaprara, E. Pennacchio, D. Gibin, K. Schahmaneche, E Silva E. Do Couto, J-P. Meyer, M. E. Sevior, M. Veltri, J. Dumarchez, L. Camilleri, L.J. Winton, F. Martelli, G. Graziani, B. Lakić, Vincenzo Cavasinni, G. N. Taylor, J. Ulrichs, J. Bouchez, Yu. Nefedov, G. Sozzi, A. Kovzelev, T. Stolarczyk, M. Mezzetto, Kai Zuber, P. Astier, Alexey Krasnoperov, M. Baldo-Ceolin, S.N. Tovey, and Fr Pastore

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hadron, Polarization (waves), Lambda, 01 natural sciences, Nuclear physics, 0103 physical sciences, Bubble chamber, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, 010306 general physics, Nucleon, Order of magnitude, Charged current
Abstract

The $\Lambda$ polarization in $\nu_\mu$ charged current interactions has been measured in the NOMAD experiment. The event sample (8087 reconstructed $\Lambda$'s) is more than an order of magnitude larger than that of previous bubble chamber experiments, while the quality of event reconstruction is comparable. We observe negative polarization along the $W$-boson direction which is enhanced in the target fragmentation region: $P_x (x_F 0) = -0.21 \pm 0.04 \mbox{(stat)} \pm 0.02 \mbox{(sys)}$. In the current fragmentation region we find $P_x (x_F 0) = -0.09 \pm 0.06 \mbox{(stat)} \pm 0.03 \mbox{(sys)}$. These results provide a test of different models describing the nucleon spin composition and the spin transfer mechanisms. A significant transverse polarization (in the direction orthogonal to the $\Lambda$ production plane) has been observed for the first time in a neutrino experiment: $P_y = -0.22 \pm 0.03 \mbox{(stat)} \pm 0.01 \mbox{(sys)}$. The dependence of the absolute value of $P_y$ on the $\Lambda$ transverse momentum with respect to the hadronic jet direction is in qualitative agreement with the results from unpolarized hadron-hadron experiments.

Published
2000

8. Limit on νe→ντ oscillations from the NOMAD experiment

Author

J. A. Hernando, D. Steele, H. Pessard, Roberto Ferrari, M. Steininger, C. Lachaud, Malcolm Ellis, J.J. Gómez-Cadenas, Bruce Yabsley, A. Cervera-Villanueva, L. Camilleri, X. Méchain, J. Kokkonen, F. Martelli, T. Weisse, A. Krasnoperov, S. Bunyatov, Achim Geiser, A. N. Toropin, Th. Stolarczyk, E. Pennacchio, M. Mezzetto, D. Sillou, P. Rathouit, Giacomo Graziani, N. Hyett, A. Letessier-Selvon, S.N. Tovey, Kai Zuber, Fr Pastore, E. do Couto e Silva, M. E. Sevior, M. Veltri, G. Bassompierre, D. Daniels, M. Gouanère, M. Tareb-Reyes, J. M. Gaillard, T. Vinogradova, A. Godley, Valentin Kuznetsov, J. Dumarchez, S. Boyd, J. Long, D. Geppert, Caroline Poulsen, J-P. Meyer, L. Linssen, P.W. Cattaneo, Ante Ljubičić, B. Lakić, L.J. Winton, U. Stiegler, Marco Fraternali, G. N. Taylor, J. Ulrichs, Chiara Roda, D. Pollmann, H. Degaudenzi, J.-P. Mendiburu, G. J. Feldman, F. Salvatore, G. F. Moorhead, G. Sozzi, Valerio Vercesi, Kevin Varvell, G. Polesello, F. V. Weber, Alessandro Cardini, Domizia Orestano, Claus Gößling, J. Gosset, O. Klimov, A. Grant, M. Baldo-Ceolin, D. Gibin, H. Zaccone, C. Nguyen-Mau, T. Del Prete, P. Hurst, A. Polayrush, K. Benslama, Vyacheslav Valuev, F. Vannucci, C. Joseph, A. Guglielmi, L. Di Lella, F. Juget, A. Lanza, M. Valdata-Nappi, M. T. Tran, T. Dignan, A. Pluquet, L.S. Peak, M. Kirsanov, G. Ballocchi, D. Hubbard, P. Zuccon, K. Schahmaneche, L. La Rotonda, S. R. Mishra, M. Banner, Marco Laveder, E. Gangler, M. Contalbrigo, A. Bueno, Nathalie Besson, P. Riemann, R. Cousins, J.-M. Vieira, I. Bird, J. Rico, A. Marchionni, A. Kovzelev, André Rubbia, Barry Blumenfeld, E. Iacopini, Vincenzo Cavasinni, D. Autiero, V. Flaminio, F. J. P. Soler, Didier Ferrere, Sergei Gninenko, P. Astier, E. Tsesmelis, Caren Hagner, T. Schmidt, J. Bouchez, A. Lupi, A. Baldisseri, S. Lacaprara, Yu. Nefedov, L. Vacavant, A. Placci, F. Bobisut, A. De Santo, C. Conta, B. Schmidt, G. Conforto, A. M. Touchard, P. Nédélec, J. M. Levy, R. Petti, Fergus Wilson, G. Collazuol, Mario Stipčević, and B. A. Popov

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, 0103 physical sciences, Context (language use), Limit (mathematics), Neutrino beam, 010306 general physics, Neutrino oscillation, 01 natural sciences, Charged current
Abstract

In the context of a two-flavour approximation we reinterpret the published NOMAD limit on ν μ → ν τ oscillations in terms of ν e → ν τ oscillations. At 90% C.L. we obtain sin 2 2θ eτ 5.2×10 −2 for large Δm 2 , while for sin 2 2 θ eτ =1 the confidence region includes Δm 2 2 / c 4 .

Published
2000

9. A more sensitive search for νμ→ντ oscillations in NOMAD

Author

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

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Oscillation, Scattering, High Energy Physics::Experiment, Sensitivity (control systems), Neutrino, Neutrino beam, Neutrino oscillation, Charged current, Confidence region
Abstract

With additional data and improved algorithms, we have enhanced the sensitivity of our appearance search for $\numunutau$ oscillations in the NOMAD detector in the CERN-SPS wide-band neutrino beam. The search uses kinematic criteria to identify $\nutau$ charged current 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 $\sin^22\theta_{\mu \tau} - \Delta m^2$ plane. At large $\Delta m^2$, the confidence region includes $\sin^22\theta_{\mu\tau}\ \ 1.2\times10^{-3}$ (a limit 3.5 times more stringent than in our previous publication), while at $\sin^22\theta_{\mu \tau}=1$, the confidence region includes $\Delta m^2 1.2$ eV$^2$/$c^4$.

Published
1999

10. Precision measurement of scaled momentum, charge multiplicity, and thrust in νμN and interactions

Author

H. Degaudenzi, G. J. Feldman, G. F. Moorhead, Valentin Kuznetsov, F. Salvatore, F. Vannucci, M. K. Vo, Corrado Angelini, J. Long, L.J. Winton, B. A. Popov, G. Collazuol, Mario Stipčević, J. M. Levy, J. Ulrichs, D. Verkindt, S.A. Bunyatov, P. Rathouit, M. Banner, Fergus Wilson, G. Sozzi, Alexey Krasnoperov, B. Schmidt, E. Manola-Poggioli, T. Dignan, J. Altegoer, Caroline Poulsen, M. Baldo-Ceolin, S. Basa, J. Kokkonen, R. Cousins, Nathalie Besson, G. Renzoni, T. Vinogradova, L. Linssen, Achim Geiser, Giacomo Graziani, J.-M. Vieira, M. E. Sevior, A. Baldisseri, Valerio Vercesi, S. N. Gninenko, André Rubbia, O.L. Klimov, P. Hurst, Marco Fraternali, T. Stolarczyk, M. Serrano, Kevin Varvell, A. Grant, H. Pessard, P. Nedelec, P. Astier, L. Camilleri, A. Kovzelev, S. Tereshchenko, D. Autiero, J. Dumarchez, Vyacheslav Valuev, E. do Couto e Silva, J. Hernando, D. Hubbard, P. Zuccon, Malcolm Ellis, Chiara Roda, J.J. Gómez-Cadenas, E. Iacopini, C. Lazzeroni, D. Sillou, A. Guglielmi, Vincenzo Cavasinni, A. Letessier-Selvon, D. Daniels, Giacomo Polesello, M. Tareb-Reyes, F. Bobisut, S.A. Volkov, L. Di Lella, Roberto Ferrari, M. Kirsanov, Bruce Yabsley, X. Méchain, F.V. Weber, M. Veltri, V. Uros, E. Pennacchio, N. Hyett, D. Pollmann, I. Bird, V. Vacavant, Michel Gouanère, F. Martelli, M. Valdata-Nappi, A. Godley, J-P. Meyer, D. Nordmann, A. Cervera-Villanueva, K. Benslama, L. La Rotonda, H. Zaccone, M. Werlen, S.R. Mishra, A. Lanza, U. Stiegler, S. Lacaprara, C. Joseph, Yu. Nefedov, T. Fazio, G. Ballocchi, A. Pluquet, C. Conta, Frédéric Juget, Marco Laveder, Barry Blumenfeld, M. T. Tran, Domizia Orestano, E. Gangler, J. Gosset, R. Petti, G. Conforto, D. Gibin, K. Schahmaneche, M. Contalbrigo, J.-P. Mendiburu, J. P. Perroud, G. Bassompierre, Alessandro Cardini, S. Boyd, G. N. Taylor, V. Flaminio, P. Galumian, F. J. P. Soler, D. Geppert, P.W. Cattaneo, Ante Ljubičić, A. Placci, L. S. Peak, A. De Santo, Antonio Bueno, Fr Pastore, A. N. Toropin, I.J. Donnelly, C. Nguyen-Mau, T. Del Prete, M. Mezzetto, Kai Zuber, S. N. Tovey, A. M. Touchard, J. Bouchez, D. Steele, L. Mossuz, A. Lupi, J. M. Gaillard, Didier Ferrere, A. Marchionni, M. Steininger, Claus Gößling, E. Tsesmelis, Caren Hagner, and T. Weisse

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Overline, Coherence effect, Electronic document, Thrust, Multiplicity (chemistry), Charged current
Abstract

By focusing on the notion of electronic document, we differentiate two evolutions which are useful to distinct titles: on the one hand are the documents, which have value of reference. Its administrator will take care to preserve its integrity and its context of production which is strongly significant. On the other hand are resources, evolutionary elements by nature, which the user must be able to appropriate and who must thus be placed at the disposal so that the production is erased, to focus on a logic of exploitation and service.

Published
1999

11. A search for ν→ν oscillations using the NOMAD detector

Author

M. Contalbrigo, T. Fazio, V. Flaminio, F. J. P. Soler, K. Benslama, T. Weisse, L.S. Peak, A. Lanza, E. do Couto e Silva, R. Petti, André Rubbia, F. Bobisut, D. Scannicchio, F. Juget, J-P. Meyer, L. La Rotonda, H. Pessard, E. Manola-Poggioli, M. Mezzetto, L.J. Winton, V. Valuev, M. T. Tran, D. Sillou, Kai Zuber, E. Iacopini, R. Cousins, J. Ulrichs, Kevin Varvell, G. Collazuol, Mario Stipčević, L. Linssen, A. Cervera-Villanueva, J.-M. Vieira, A. Grant, V. Tereshchenko, P. Rathouit, D. Pollmann, A. Pluquet, Giacomo Graziani, Didier Ferrere, G. Sozzi, F.V. Weber, D. Verkindt, P. Steffen, G. Conforto, Barry Blumenfeld, Th. Stolarczyk, Vincenzo Cavasinni, J. Gosset, A. Baldisseri, A. Marchionni, J. Altegoer, S.A. Volkov, E. Gangler, D. Kekez, P. Nédélec, Roberto Ferrari, S. N. Gninenko, J.-M. Gaillard, J. Long, M. Gouanère, J. M. Levy, M. E. Sevior, Marco Fraternali, Claus Gößling, A. Placci, M. Veltri, A. Letessier-Selvon, D. Gibin, G. Bassompierre, A. De Santo, D. Autiero, Caroline Poulsen, D. Daniels, E. Tsesmelis, J.-P. Mendiburu, Corrado Angelini, V. Uros, M. Valdata-Nappi, D. Steele, Bruce Yabsley, X. Méchain, Stefano Lacaprara, L. Mossuz, Giacomo Polesello, Fergus Wilson, Alessandro Cardini, M. Tareb-Reyes, B. G. Pope, M. Baldo-Ceolin, S. Boyd, D. Geppert, Achim Geiser, M. Steininger, H. Degaudenzi, T. Dignan, G. J. Feldman, P.W. Cattaneo, Ante Ljubičić, V.E. Kuznetsov, G. N. Taylor, S. Basa, J. Bouchez, G. F. Moorhead, A. Lupi, B. Khomenko, A. M. Touchard, S. Bunyatov, F. Salvatore, L. Camilleri, Yu. Nefedov, J. Kokkonen, M. K. Vo, A. Kovzelev, P. Hurst, T. Vinogradova, B. Popov, L. Vacavant, L. Di Lella, J. Hernando, D. Hubbard, K. Schahmaneche, C. Hagner, F. Martelli, U. Stiegler, C. Conta, S.N. Tovey, M. Kirsanov, I. Bird, P. Astier, Fr Pastore, Domizia Orestano, H. Plothow-Besch, Antonio Bueno, A. N. Toropin, F. Vannucci, J. P. Perroud, A. Sconza, P. Galumian, M. Banner, J.J. Gómez-Cadenas, A. Castera, O. Klimov, I.J. Donnelly, C. Nguyen-Mau, T. Del Prete, E. Pennacchio, N. Hyett, G. Fumagalli, M. Werlen, S.R. Mishra, Chiara Roda, B. Schmidt, Valerio Vercesi, M. Serrano, H. Zaccone, C. Joseph, G. Ballocchi, Marco Laveder, Nathalie Besson, G. Renzoni, C. Lazzeroni, A. Guglielmi, and J. Dumarchez

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Oscillation, Detector, High Energy Physics::Experiment, Detection theory, Wide band, Neutrino oscillation, Signal, Charged current, Beam (structure)
Abstract

NOMAD is a neutrino oscillation experiment designed to search for ντ appearance in the CERN-SPS wide band νμ beam. Signal detection relies on the identification of ντ charged current interactions using kinematic criteria. The analysis of the 1995 data sample yields no oscillation signal. Combining all studied τ decay modes, a limit of sin 2 2θ μτ 4.2×10 −3 is obtained for large Δm2 at the 90% confidence level.

Published
1998

12. A precision measurement of charm dimuon production in neutrino interactions from the NOMAD experiment

Author

K. Schahmaneche, C.T. Kullenberg, P. Hurst, L. Di Lella, J.-P. Mendiburu, M. Valdata-Nappi, Alessandro Cardini, J.J. Kim, R. Challis, S.A. Bunyatov, J. A. Hernando, V. Tereshchenko, Roberto Ferrari, A. Baldisseri, Th. Stolarczyk, G. Collazuol, Mario Stipčević, A. Cervera-Villanueva, C. Lachaud, Giacomo Graziani, K. Benslama, T. Weisse, B. A. Popov, M. E. Sevior, A. Lanza, F. Bobisut, A. Marchionni, M. T. Tran, Bruce Yabsley, X. Méchain, E. Gangler, H. Zaccone, C. Joseph, F. Salvatore, P. Astier, Caroline Poulsen, Domizia Orestano, Mikhail Kirsanov, R. Cousins, M. Mezzetto, M. Contalbrigo, D. Autiero, R. Petti, Stefano Lacaprara, Marco Laveder, Kai Zuber, Fergus Wilson, S.N. Tovey, J.-M. Vieira, J. M. Levy, Sergey A. Kulagin, A.M. Scott, A. Sconza, Yu. Nefedov, L. Vacavant, L. La Rotonda, Frédéric Juget, S. R. Mishra, Chiara Roda, E. Pennacchio, O.L. Klimov, H. Degaudenzi, G. J. Feldman, Fr Pastore, N. Hyett, D. Pollmann, G. F. Moorhead, D. Geppert, Luca Rebuffi, P. Riemann, Artem Chukanov, V. V. Lyubushkin, E. do Couto e Silva, P.W. Cattaneo, Ante Ljubičić, Didier Ferrere, Kevin Varvell, Barry Blumenfeld, Alexey Krasnoperov, J. Kokkonen, M. Baldo-Ceolin, M. Banner, H. Duyang, C. Conta, C. Nguyen-Mau, T. Del Prete, B. Schmidt, Sergei Gninenko, J. Dumarchez, A. Grant, H. Pessard, A. Godley, P. Nedelec, Valerio Vercesi, M. Veltri, Dmitry V. Naumov, G. Conforto, J. Long, Claus Gößling, Vyacheslav Valuev, J. Libo, Malcolm Ellis, F. Vannucci, Alexander Toropin, L. S. Peak, E. Tsesmelis, Caren Hagner, T. Schmidt, P. Zuccon, A. Kovzelev, Antonio Bueno, J. Bouchez, O. Samoylov, J.J. Gómez-Cadenas, A. Lupi, A. Placci, D. Steele, A. De Santo, L. Linssen, Marco Fraternali, Sergey Alekhin, V. Flaminio, F. J. P. Soler, F.V. Weber, T. Vinogradova, André Rubbia, E. Iacopini, Vincenzo Cavasinni, A.-M. Touchard, A. Polyarush, Achim Geiser, J. Gosset, D. Gibin, Q. Wu, U. Stiegler, G. Bassompierre, J. Rico, S. Boyd, B. Lakić, G. N. Taylor, J.M. Gaillard, J-P. Meyer, L. Camilleri, L.J. Winton, J. Ulrichs, D. Sillou, G. Sozzi, A. Guglielmi, I. Bird, X.C. Tian, Nathalie Besson, G. Vidal-Sitjes, Michel Gouanère, F. Martelli, N. Kent, A. Letessier-Selvon, Giacomo Polesello, M. Tareb-Reyes, Orestano, Domizia, National Science Foundation (US), Alfred P. Sloan Foundation, Australian Research Council, Federal Ministry of Education and Research (Germany), 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), 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), and NOMAD

Subjects
Nuclear and High Energy Physics, Strange quark, Particle physics, Charm production, strange quark content of the nucleon, dimuon charm production, FOS: Physical sciences, Strange quark content of the nucleon, Dimuon charm production, Neutrino interactions, 01 natural sciences, Charm quark, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Charm (quantum number), 010306 general physics, Charged current, Physics, Quantum chromodynamics, 010308 nuclear & particles physics, Física, Deep inelastic scattering, 3. Good health, Neutrino, Nucleon, Particle Physics - Experiment
Abstract

We present our new measurement of the cross-section for charm dimuon production in neutrino iron interactions based upon the full statistics collected by the NOMAD experiment. After background subtraction we observe 15 344 charm dimuon events, providing the largest sample currently available. The analysis exploits the large inclusive charged current sample - about 9 x 10(6) events after all analysis cuts - and the high resolution NOMAD detector to constrain the total systematic uncertainty on the ratio of charm dimuon to inclusive Charged Current (CC) cross-sections to similar to 2%. We also perform a fit to the NOMAD data to extract the charm production parameters and the strange quark sea content of the nucleon within the NLO QCD approximation. We obtain a value of m(c)(m(c)) = 1.159 +/- 0.075 GeV/c(2) for the running mass of the charm quark in the (MS) over bar scheme and a strange quark sea suppression factor of kappa(s) = 0.591 +/- 0.019 at Q(2) = 20 GeV2/c(2)., We extend our grateful appreciations to the CERN SPS staff for the magnificent performance of the neutrino beam. The experiment was supported by the following agencies: ARC and DIISR of Australia, IN2P3 and CEA of France, BMBF of Germany, INFN of Italy, JINR and INR of Russia, FNSRS of Switzerland, DOE, NSF, Sloan, and Cottrell Foundations of USA, and VP Research Office of the University of South Carolina. This work was partially supported by the University of South Carolina, by the DOE grant DE-FG02-95ER40910, by the Russian Federal grant 02.740.11.5220 and MK-432.2013.2, and JINR grant 13-201-01.

Published
2013

13. 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

14. A measurement of coherent neutral pion production in neutrino neutral current interactions in the NOMAD experiment

Author

Marco Fraternali, A. Placci, J. A. Hernando, M. Mezzetto, A. De Santo, Alexander Toropin, Kai Zuber, G. Bassompierre, S. Boyd, B. Lakić, G. N. Taylor, L. S. Peak, O.L. Klimov, V. Flaminio, F. J. P. Soler, J. Long, K. Benslama, T. Vinogradova, F. Bobisut, Antonio Bueno, A.-M. Touchard, A. Cervera-Villanueva, Kevin Varvell, L. Camilleri, Vyacheslav Valuev, J.M. Gaillard, C. Lachaud, Giacomo Graziani, V. V. Lyubushkin, M. T. Tran, D. Steele, Nathalie Besson, E. Gangler, Mikhail Kirsanov, R. Cousins, Barry Blumenfeld, A.M. Scott, A. Grant, H. Pessard, P. Nedelec, T. Weisse, J. Kokkonen, Malcolm Ellis, R. Challis, J.-P. Mendiburu, Q. Wu, S.A. Bunyatov, A. Marchionni, J.-M. Vieira, U. Stiegler, E. Pennacchio, I. Bird, D. Geppert, J. Rico, P.W. Cattaneo, Ante Ljubičić, F. Vannucci, E. do Couto e Silva, N. Hyett, R. Petti, D. Pollmann, P. Astier, J. Bouchez, L. Linssen, J.J. Gómez-Cadenas, André Rubbia, O. Samoylov, Alessandro Cardini, X.C. Tian, A. Baldisseri, Sergey Alekhin, Roberto Ferrari, V. Tereshchenko, F. Salvatore, B. A. Popov, Alexey Krasnoperov, D. Autiero, D. Sillou, Yu. Nefedov, L. Vacavant, F.V. Weber, Frédéric Juget, Chiara Roda, P. Zuccon, J. Gosset, A. Lupi, E. Iacopini, Caroline Poulsen, H. Zaccone, Luca Rebuffi, Artem Chukanov, Bruce Yabsley, Claus Gößling, X. Méchain, A. Guglielmi, D. Gibin, C. Joseph, Vincenzo Cavasinni, G. Vidal-Sitjes, M. Baldo-Ceolin, A. Polyarush, C. Conta, B. Schmidt, H. Degaudenzi, G. J. Feldman, Achim Geiser, G. F. Moorhead, G. Conforto, J. Dumarchez, Marco Laveder, Didier Ferrere, Th. Stolarczyk, M. Banner, Valerio Vercesi, Dmitry V. Naumov, M. E. Sevior, K. Schahmaneche, Sergei Gninenko, C.T. Kullenberg, P. Hurst, L. Di Lella, M. Valdata-Nappi, E. Tsesmelis, Caren Hagner, Domizia Orestano, J.J. Kim, T. Schmidt, A. Kovzelev, A. Godley, M. Contalbrigo, J. M. Levy, Sergey A. Kulagin, G. Collazuol, Mario Stipčević, M. Veltri, J-P. Meyer, L.J. Winton, A. Sconza, J. Ulrichs, M.B. Seaton, L. La Rotonda, S. R. Mishra, A. Lanza, G. Sozzi, P. Riemann, Stefano Lacaprara, Fergus Wilson, A. Letessier-Selvon, Giacomo Polesello, M. Tareb-Reyes, Michel Gouanère, F. Martelli, N. Kent, C. Nguyen-Mau, T. Del Prete, S.N. Tovey, Fr Pastore, Kullenberg, Ct, Mishra, Sr, Seaton, Mb, Kim, Jj, Tian, Xc, Scott, Am, Kirsanov, M, Petti, R, Alekhin, S, 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, 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, Gninenko, S, 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, 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, Gf, Naumov, D, Nedelec, P, Nefedov, Y, Nguyen Mau, C, Orestano, Domizia, Pastore, F, Peak, L, Pennacchio, E, Pessard, H, Placci, A, Polesello, G, Pollmann, D, Polyarush, A, Poulsen, C, Popov, B, Rebuffi, L, 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, Wu, Q, Yabsley, Bd, Zaccone, H, Zuber, K, Zuccon, P., 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), 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, 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), 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), 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), 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, and 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)

Subjects
Particle physics, Nuclear and High Energy Physics, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, Coherent pion neutrino neutral current, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Nuclear Experiment, Charged current, Physics, Range (particle radiation), Large Hadron Collider, Neutral current, 010308 nuclear & particles physics, Scattering, Física, Deep inelastic scattering, coherent pion, neutrino, neutral current, High Energy Physics::Experiment, Neutrino, Particle Physics - Experiment
Abstract

We present a study of exclusive neutral pion production in neutrino-nucleus Neutral Current interactions using data from the NOMAD experiment at the CERN SPS. The data correspond to $1.44 \times 10^6$ muon-neutrino Charged Current interactions in the energy range $2.5 \leq E_{\nu} \leq 300$ GeV. Neutrino events with only one visible $\pi^0$ in the final state are expected to result from two Neutral Current processes: coherent $\pi^0$ production, {\boldmath $\nu + {\cal A} \to \nu + {\cal A} + \pi^0$} and single $\pi^0$ production in neutrino-nucleon scattering. The signature of coherent $\pi^0$ production is an emergent $\pi^0$ almost collinear with the incident neutrino while $\pi^0$'s produced in neutrino-nucleon deep inelastic scattering have larger transverse momenta. In this analysis all relevant backgrounds to the coherent $\pi^0$ production signal are measured using data themselves. Having determined the backgrounds, and using the Rein-Sehgal model for the coherent $\pi^0$ production to compute the detection efficiency, we obtain {\boldmath $4630 \pm 522 (stat) \pm 426 (syst)$} corrected coherent-$\pi^0$ events with $E_{\pi^0} \geq 0.5$ GeV. We measure {\boldmath $\sigma (\nu {\cal A} \to \nu {\cal A} \pi^0) = [ 72.6 \pm 8.1(stat) \pm 6.9(syst) ] \times 10^{-40} cm^2/nucleus$}. This is the most precise measurement of the coherent $\pi^0$ production to date., Comment: 23 pages, 9 figures, accepted for publication in Phys. Lett. B

Published
2009

15. A precise measurement of the muon neutrino nucleon inclusive charged current cross section off an isoscalar target in the energy range 2.5

Author

O.L. Klimov, K. Schahmaneche, E. Pennacchio, Malcolm Ellis, N. Hyett, D. Pollmann, Yu. Nefedov, J.J. Gómez-Cadenas, T. Weisse, V. Tereshchenko, L. Vacavant, D. Sillou, Alexey Krasnoperov, D. Steele, H. Degaudenzi, Caroline Poulsen, E. do Couto e Silva, R. Petti, M. Baldo-Ceolin, M. Banner, André Rubbia, D. Geppert, G. J. Feldman, G. F. Moorhead, B. A. Popov, P.W. Cattaneo, C. Conta, Marco Fraternali, B. Schmidt, A. Marchionni, T. Vinogradova, L. Linssen, E. Iacopini, Didier Ferrere, G. Conforto, F. Salvatore, A. Kovzelev, F. Bobisut, H. Pessard, Sergey Alekhin, L. La Rotonda, S. R. Mishra, Q. Wu, Valerio Vercesi, P. Hurst, Vincenzo Cavasinni, A. Ljubič, P. Riemann, F. Martelli, S.N. Tovey, F.V. Weber, L. Di Lella, Dmitry V. Naumov, K. Benslama, A. Godley, Fr Pastore, A. Guglielmi, M. Valdata-Nappi, A.-M. Touchard, N. Kent, U. Stiegler, J. Long, M. Veltri, Frédéric Juget, M. Kirsanov, Chiara Roda, M. T. Tran, Sergei Gninenko, J.J. Kim, Stefano Lacaprara, J. Dumarchez, Claus Gößling, L. S. Peak, H. Zaccone, C. Joseph, Fergus Wilson, Domizia Orestano, G. Vidal-Sitjes, E. Gangler, A. Placci, Vyacheslav Valuev, Kevin Varvell, A. Letessier-Selvon, V. V. Lyubushkin, Antonio Bueno, M. Mezzetto, C. Nguyen-Mau, A. De Santo, Giacomo Polesello, A. N. Toropin, Kai Zuber, M. Contalbrigo, F. Vannucci, J.M. Gaillard, T. Del Prete, M. Tareb-Reyes, A. Grant, Barry Blumenfeld, R. Challis, P. Nedelec, Nathalie Besson, G. Collazuol, Mario Stipčević, S.A. Bunyatov, J.-P. Mendiburu, J-P. Meyer, J. M. Levy, Marco Laveder, L.J. Winton, Alessandro Cardini, M. Gouanère, M.B. Seaton, I. Bird, Sergey A. Kulagin, J. Ulrichs, G. Bassompierre, V. Flaminio, P. Zuccon, A. Baldisseri, R. Cousins, G. Sozzi, J.-M. Vieira, F. J. P. Soler, Th. Stolarczyk, E. Tsesmelis, Caren Hagner, S. Boyd, A. Sconza, B. Lakić, J. Rico, G. N. Taylor, P. Astier, J. Gosset, M. E. Sevior, D. Autiero, D. Gibin, T. Schmidt, A. Polyarush, A. Lanza, Achim Geiser, Luca Rebuffi, Artem Chukanov, J. Bouchez, O. Samoylov, A. Lupi, Roberto Ferrari, Bruce Yabsley, X. Méchain, C. Lachaud, Giacomo Graziani, J. Kokkonen, J. A. Hernando, A. Cervera-Villanueva, L. Camilleri, 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), APC - Neutrinos, 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)-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), NOMAD, 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), 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), 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, and 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)

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Muon, 010308 nuclear & particles physics, Isoscalar, Astrophysics::High Energy Astrophysical Phenomena, 01 natural sciences, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Muon neutrino, High Energy Physics::Experiment, Neutrino, 010306 general physics, Nucleon, Neutrino oscillation, Nuclear Experiment, Charged current
Abstract

We present a measurement of the muon neutrino–nucleon inclusive charged current cross section, off an isoscalar target, in the neutrino energy range 2.5 ⩽ E ν ⩽ 40 GeV . The significance of this measurement is its precision, ±4% in 2.5 ⩽ E ν ⩽ 10 GeV , and ±2.6% in 10 ⩽ E ν ⩽ 40 GeV regions, where significant uncertainties in previous experiments still exist, and its importance to the current and proposed long baseline neutrino oscillation experiments.

Published
2008

16. 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

17. 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

18. A study of strange particles produced in neutrino neutral current interactions in the NOMAD experiment

Author

T. Vinogradova, Caroline Poulsen, D. Geppert, P.W. Cattaneo, Ante Ljubičić, R. Challis, S.A. Bunyatov, E. Pennacchio, M. Baldo-Ceolin, M. Banner, J-P. Meyer, N. Hyett, P. Hurst, L.J. Winton, V. V. Lyubushkin, Barry Blumenfeld, J. Ulrichs, A. Guglielmi, L. Di Lella, J.-P. Mendiburu, Alessandro Cardini, F. Salvatore, Kevin Varvell, M. Kirsanov, J. A. Hernando, G. Sozzi, Th. Stolarczyk, A. Baldisseri, L. S. Peak, Rhiju Das, M. E. Sevior, J. Gosset, A. Grant, I. Bird, Luca Rebuffi, R. Cousins, Antonio Bueno, A. N. Toropin, A. Letessier-Selvon, E. Tsesmelis, Caren Hagner, H. Zaccone, L. La Rotonda, D. Gibin, Artem Chukanov, J.-M. Vieira, D. Daniels, Claus Gößling, Giacomo Polesello, M. Gouanère, A. Polyarush, M. Tareb-Reyes, H. Degaudenzi, C. Joseph, Achim Geiser, G. J. Feldman, M. Mezzetto, D. Sillou, S.R. Mishra, Kai Zuber, P. Nédélec, Nathalie Besson, G. F. Moorhead, L. Linssen, P. Riemann, A. Cervera-Villanueva, Malcolm Ellis, Frédéric Juget, Chiara Roda, J. Kokkonen, V. Flaminio, D. Pollmann, A. Godley, T. Schmidt, F. J. P. Soler, E. do Couto e Silva, André Rubbia, F.V. Weber, P. Astier, Marco Laveder, C. Lachaud, L. Camilleri, Domizia Orestano, A. Krasnoperov, D. Steele, Giacomo Graziani, F. Martelli, M. Veltri, E. Iacopini, J.J. Gómez-Cadenas, T. Weisse, U. Stiegler, M. Contalbrigo, A. Marchionni, N. Kent, D. Autiero, E. Naumova, Vincenzo Cavasinni, A. Placci, Marco Fraternali, O. Klimov, A. De Santo, Valerio Vercesi, J. Long, A. Kovzelev, J.-M. Levy, K. Benslama, Dmitry V. Naumov, D. Shih, C. Nguyen-Mau, A. Sconza, T. Del Prete, J. Bouchez, G. Vidal-Sitjes, T. Dignan, M. Valdata-Nappi, A. Lanza, A. Lupi, M. T. Tran, S.N. Tovey, Roberto Ferrari, Fr Pastore, E. Gangler, J. Rico, Didier Ferrere, Bruce Yabsley, X. Méchain, Sergei Gninenko, G. Bassompierre, C. Conta, B. Schmidt, G. Conforto, S. Boyd, B. Lakić, K. Schahmaneche, F. Bobisut, G. N. Taylor, H. Pessard, J. Dumarchez, Vyacheslav Valuev, F. Vannucci, J.M. Gaillard, V. Tereshchenko, D. Hubbard, P. Zuccon, Yu. Nefedov, L. Vacavant, A.-M. Touchard, B. A. Popov, T.M. Hong, R. Petti, Stefano Lacaprara, Fergus Wilson, G. Collazuol, Mario Stipčević, 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), 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, Naumov, D, Chukanov, A, Naumova, E, 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, Cavasinni, V, Cervera Villanuaeva, A, Challis, R, Collazuol, G, Conforto, G, Conta, C, Contalbrigo, M, Cousins, R, Daniels, D, Das, R, Degaudenzi, H, Del Prete, T, De Santo, A, Dignan, T, Di Lella, L, Silva, Ed, 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, Hong, Tm, 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, Rebuffi, L, Rico, J, Riemann, P, Roda, C, Rubbia, A, Salvatore, F, Schahmaneche, K, Schmidt, B, Schmidt, T, Sconza, A, Sevior, M, Shih, D, 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
Physics, Nuclear and High Energy Physics, Particle physics, Strange quark, Neutral current, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hyperon, FOS: Physical sciences, Sigma, Física, Lambda, Polarization (waves), 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Neutrino, 010306 general physics, Nuclear Experiment, Particle Physics - Experiment
Abstract

Results of a detailed study of strange particle production in neutrino neutral current interactions are presented using the data from the NOMAD experiment. Integral yields of neutral strange particles (K0s, Lambda, Lambda-bar) have been measured. Decays of resonances and heavy hyperons with an identified K0s or Lambda in the final state have been analyzed. Clear signals corresponding to K* and Sigma(1385) have been observed. First results on the measurements of the Lambda polarization in neutral current interactions have been obtained., Accepted for publication in Nuclear Physics B as a rapid communication

Published
2004

19. Bose-Einstein correlations in charged current muon-neutrino interactions in the NOMAD experiment at CERN

Author

J.-P. Mendiburu, D. Geppert, Alessandro Cardini, P.W. Cattaneo, Ante Ljubičić, H. Zaccone, C. Joseph, S.N. Tovey, Didier Ferrere, Fr Pastore, C. Hagner, Sergei Gninenko, P. Hurst, L. Di Lella, K. Benslama, A. Lanza, M. T. Tran, André Rubbia, R. Challis, E. Gangler, V. V. Lyubushkin, S.A. Bunyatov, Marco Laveder, Barry Blumenfeld, L. S. Peak, M. Kirsanov, Vyacheslav Valuev, E. Iacopini, Th. Stolarczyk, J. Bouchez, V. Tereshchenko, Vincenzo Cavasinni, E. Pennacchio, G. Bassompierre, A. Lupi, M. E. Sevior, D. Steele, N. Hyett, Antonio Bueno, A. N. Toropin, Yu. Nefedov, L. Vacavant, A. Baldisseri, O. Klimov, B. A. Popov, J. Kokkonen, A. Krasnoperov, S. Boyd, B. Lakić, J. Long, C. Nguyen-Mau, D. Hubbard, P. Zuccon, G. N. Taylor, R. Cousins, T. Del Prete, K. Schahmaneche, Caroline Poulsen, C. Conta, J.-M. Vieira, V. Flaminio, E. Tsesmelis, M. Gouanère, B. Schmidt, Roberto Ferrari, A. Letessier-Selvon, Kevin Varvell, G. Polesello, A. Marchionni, Domizia Orestano, F. J. P. Soler, G. Conforto, Marco Fraternali, T. Schmidt, J.M. Gaillard, H. Degaudenzi, G. J. Feldman, H. Pessard, P. Astier, Bruce Yabsley, X. Méchain, M. Contalbrigo, A. Grant, T. Dignan, G. Collazuol, Mario Stipčević, L. Linssen, R. Zei, D. Daniels, C. Lachaud, G. F. Moorhead, D. Pollmann, E. do Couto e Silva, M. Valdata-Nappi, J. M. Levy, A. Sconza, M. Tareb-Reyes, J. Dumarchez, F.V. Weber, F. Bobisut, Giacomo Graziani, S.R. Mishra, R. Petti, Stefano Lacaprara, Fergus Wilson, D. Autiero, Frédéric Juget, Chiara Roda, J. Rico, Luca Rebuffi, Valerio Vercesi, Artem Chukanov, L.J. Winton, Dmitry V. Naumov, Claus Gößling, J. Ulrichs, T. Vinogradova, M. Mezzetto, D. Sillou, Kai Zuber, A. M. Touchard, P. Nédélec, G. Sozzi, A. Placci, A. De Santo, F. Martelli, N. Kent, Malcolm Ellis, J.J. Gómez-Cadenas, F. Salvatore, T. Weisse, U. Stiegler, A. Polyarush, Achim Geiser, J. A. Hernando, A. Cervera-Villanueva, L. Camilleri, J. Gosset, D. Gibin, A. Godley, M. Veltri, J-P. Meyer, L. La Rotonda, A. Guglielmi, A. Kovzelev, I. Bird, P. Riemann, F. Vannucci, M. Banner, G. Vidal-Sitjes, M. Baldo-Ceolin, Nathalie Besson, 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), 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, 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, Cavasinni, V, Cervera Villanueva, A, Challis, Rc, 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, Kilmov, 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, Naumov, D, 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, Popov, B, Poulsen, C, 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, E, Weisse, T, Wilson, Ff, Winton, Lj, Yabsley, Bd, Zaccone, H, Zei, R, Zuber, K, and Zuccon, P.

Subjects
Nuclear and High Energy Physics, Particle physics, Bose-Einstein, correlations charged current, muon-neutrino interaction, NOMAD, Hadron, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Pion, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Muon neutrino, Rapidity, 010306 general physics, Nuclear Experiment, Charged current, Physics, Large Hadron Collider, 010308 nuclear & particles physics, Física, Bose–Einstein correlations, Charged particle, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Particle Physics - Experiment
Abstract

Bose-Einstein Correlations in one and two dimensions have been studied, with high statistics, in charged current muon-neutrino interaction events collected with the NOMAD detector at CERN. In one dimension the Bose-Einstein effect has been analyzed with the Goldhaber and the Kopylov-Podgoretskii phenomenological parametrizations. The Goldhaber parametrization gives the radius of the pion emission region R_G = 1.01+/-0.05(stat)+0.09-0.06(sys) fm and for the chaoticity parameter the value lambda = 0.40+/-0.03(stat)+0.01-0.06(sys). Using the Kopylov-Podgoretskii parametrization yields R_KP = 2.07+/-0.04(stat)+0.01-0.14(sys) fm and lambda_KP = 0.29+/-0.06(stat)+0.01-0.04(sys). Different parametrizations of the long-range correlations have been also studied. The two-dimensional shape of the source has been investigated in the longitudinal co-moving frame. A significant difference between the transverse and the longitudinal dimensions is observed. The high statistics of the collected sample allowed the study of the Bose-Einstein correlations as a function of rapidity, charged particle multiplicity and hadronic energy. A weak dependence of both radius and chaoticity on multiplicity and hadronic energy is found., Comment: 24 pages, 12 figures

Published
2004

20. A Grid Service Broker for Scheduling Distributed Data-Oriented Applications on Global Grids

Author

Rajkumar Buyya, L.J. Winton, and Srikumar Venugopal

Subjects
FOS: Computer and information sciences, Database, Data grid, Computer science, Distributed computing, Grid file, Testbed, computer.software_genre, Grid, Scheduling (computing), DRMAA, C.1.4, Semantic grid, Computer Science - Distributed, Parallel, and Cluster Computing, Grid computing, Distributed, Parallel, and Cluster Computing (cs.DC), computer
Abstract

The next generation of scientific experiments and studies, popularly called as e-Science, is carried out by large collaborations of researchers distributed around the world engaged in analysis of huge collections of data generated by scientific instruments. Grid computing has emerged as an enabler for e-Science as it permits the creation of virtual organizations that bring together communities with common objectives. Within a community, data collections are stored or replicated on distributed resources to enhance storage capability or efficiency of access. In such an environment, scientists need to have the ability to carry out their studies by transparently accessing distributed data and computational resources. In this paper, we propose and develop a Grid broker that mediates access to distributed resources by (a) discovering suitable data sources for a given analysis scenario, (b) suitable computational resources, (c) optimally mapping analysis jobs to resources, (d) deploying and monitoring job execution on selected resources, (e) accessing data from local or remote data source during job execution and (f) collating and presenting results. The broker supports a declarative and dynamic parametric programming model for creating grid applications. We have used this model in grid-enabling a high energy physics analysis application (Belle Analysis Software Framework). The broker has been used in deploying Belle experiment data analysis jobs on a grid testbed, called Belle Analysis Data Grid, having resources distributed across Australia interconnected through GrangeNet., Comment: 15 pages, 11 figures, 1 table

Published
2004
Full Text
View/download PDF

21. Search for νμ→νe oscillations in the NOMAD experiment

Author

T. Weisse, André Rubbia, J.-P. Mendiburu, Alessandro Cardini, F. Bobisut, E. Iacopini, P. Astier, O. Klimov, Vincenzo Cavasinni, Roberto Ferrari, Domizia Orestano, M. Contalbrigo, H. Degaudenzi, G. J. Feldman, A. Sconza, F. Salvatore, K. Benslama, G. F. Moorhead, C. Nguyen-Mau, D. Autiero, Th. Stolarczyk, D. Kustov, T. Del Prete, A. Polyarush, H. Pessard, A. Godley, J. Long, Bruce Yabsley, X. Méchain, M. E. Sevior, A. Lanza, Achim Geiser, C. Conta, J. A. Hernando, L. Linssen, Roberto Renò, Valerio Vercesi, B. Schmidt, Giacomo Graziani, E. do Couto e Silva, R. Cousins, T. Dignan, G. Conforto, J.-M. Vieira, M. T. Tran, Dmitry V. Naumov, M. Veltri, D. Pollmann, Barry Blumenfeld, J.M. Gaillard, S.N. Tovey, J. Dumarchez, A. Cervera-Villanueva, Vyacheslav Valuev, E. Gangler, T. Vinogradova, G. Bassompierre, Fr Pastore, L. Camilleri, J. Gosset, H. Zaccone, V. Flaminio, D. Gibin, F. J. P. Soler, S. Boyd, Yu. Nefedov, L. Vacavant, B. Lakić, V. Tereshchenko, G. N. Taylor, Malcolm Ellis, C. Joseph, F.V. Weber, F. Juget, D. Hubbard, P. Zuccon, K. Schahmaneche, J.J. Gómez-Cadenas, M. Baldo-Ceolin, M. Mezzetto, J. Kokkonen, D. Sillou, U. Stiegler, Kai Zuber, Marco Laveder, A. Krasnoperov, C. Göbling, L. La Rotonda, E. Pennacchio, N. Hyett, P. Riemann, D. Steele, M. Gouanère, C. Lachaud, Marco Fraternali, S.R. Mishra, M. Valdata-Nappi, A. Placci, Chiara Roda, A. De Santo, Luca Rebuffi, Kevin Varvell, Artem Chukanov, G. Polesello, J. Rico, A. Marchionni, A. Grant, A. M. Touchard, P. Nédélec, L. S. Peak, Antonio Bueno, A. N. Toropin, D. Geppert, P.W. Cattaneo, Ante Ljubičić, B. A. Popov, J. M. Levy, R. Petti, Stefano Lacaprara, Fergus Wilson, G. Collazuol, Mario Stipčević, F. Vannucci, M. Banner, G. Vidal-Sitjes, Nathalie Besson, A. Letessier-Selvon, Didier Ferrere, D. Daniels, M. Tareb-Reyes, A. Kovzelev, J-P. Meyer, A. Guglielmi, L.J. Winton, Sergei Gninenko, R. Challis, J. Ulrichs, S.A. Bunyatov, G. Sozzi, F. Martelli, N. Kent, I. Bird, A. Baldisseri, Caroline Poulsen, J. Bouchez, P. Hurst, A. Lupi, L. Di Lella, E. Tsesmelis, Caren Hagner, M. Kirsanov, and T. Schmidt

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, 010308 nuclear & particles physics, Oscillation, Neutrino oscillations, Neutrino beam, 01 natural sciences, Nuclear physics, 0103 physical sciences, Energy spectrum, Neutrino, 010306 general physics, Neutrino oscillation, Charged current
Abstract

We present the results of a search for vμ → v e oscillations in the NOMAD experiment at CERN. The experiment looked for the appearance of ve in a predominantly vμ wide-band neutrino beam at the CERN SPS. No evidence for oscillations was found. The 90% confidence limits obtained are Δm2 < 0.4 eV 2 for maximal mixing and sin2(2θ) < 1.4 × 10-3 for large Δm2. This result excludes the LSND allowed region of oscillation parameters with Δm2 ≳ 10 eV2. © 2003 Elsevier B.V. All rights reserved.

Published
2003

22. Prediction of neutrino fluxes in the NOMAD experiment

Author

André Rubbia, J. Bouchez, J.-M. Levy, A. Lupi, E. Iacopini, A. Godley, Caroline Poulsen, M. Veltri, K. Schahmaneche, Vincenzo Cavasinni, J. A. Hernando, J. Rico, Alexander Toropin, Malcolm Ellis, Didier Ferrere, J. Dumarchez, R. Petti, G. Vidal-Sitjes, D. Steele, L. S. Peak, Fergus Wilson, O.L. Klimov, J. Long, E Silva E. Do Couto, Sergei Gninenko, D. Autiero, J.J. Gómez-Cadenas, Marco Fraternali, A. Letessier-Selvon, L. Linssen, U. Stiegler, A. Cervera-Villanueva, Antonio Bueno, D. Pollmann, K. Benslama, F. Salvatore, L. Camilleri, T. Stolarczyk, D. Daniels, P. Hurst, Giacomo Polesello, M. Tareb-Reyes, Kevin Varvell, E. Tsesmelis, Valerio Vercesi, Domizia Orestano, M. T. Tran, A. Marchionni, L. Di Lella, Caren Hagner, T. Dignan, L. La Rotonda, F.V. Weber, J. Gosset, C. Nguyen-Mau, Vyacheslav Valuev, P. Riemann, T. Weisse, A. Grant, Dmitry V. Naumov, M. Valdata-Nappi, E. Gangler, Alexey Krasnoperov, H. Pessard, P. Nedelec, D. Gibin, M. Baldo-Ceolin, M. Banner, T. Schmidt, A.-M. Touchard, G. Collazuol, Mario Stipčević, P. Astier, T. Del Prete, J-P. Meyer, A. Polyarush, L.J. Winton, J. Ulrichs, H. Degaudenzi, A. Kovzelev, G. J. Feldman, F. Vannucci, Achim Geiser, D. Geppert, G. F. Moorhead, P.W. Cattaneo, Ante Ljubičić, E. Pennacchio, Mikhail Kirsanov, R. Cousins, I. Bird, S.A. Bunyatov, G. Sozzi, S.R. Mishra, Yu. Nefedov, L. Vacavant, T. Vinogradova, D. Hubbard, D. Sillou, J.-M. Vieira, J.M. Gaillard, N. Hyett, A. Guglielmi, Frédéric Juget, Chiara Roda, A. Lanza, V. Tereshchenko, C. Lachaud, Giacomo Graziani, C. Conta, A. Baldisseri, Michel Gouanère, G. Bassompierre, B. A. Popov, B. Schmidt, M. Mezzetto, Kai Zuber, M. Contalbrigo, F. Martelli, A. Placci, N. Kent, H. Zaccone, G. Conforto, S. Boyd, A. De Santo, Nathalie Besson, B. Lakić, G. N. Taylor, C. Joseph, F. Bobisut, V. Flaminio, F. J. P. Soler, Marco Laveder, R. Challis, S.N. Tovey, Fr Pastore, J.-P. Mendiburu, Claus Gössling, Alessandro Cardini, Barry Blumenfeld, J. Kokkonen, M. E. Sevior, Roberto Ferrari, Bruce Yabsley, X. Méchain, 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
Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Neutrino oscillation, Instrumentation, Charged current, Physics, Neutral current, 010308 nuclear & particles physics, Detector, High Energy Physics::Phenomenology, Física, Solar neutrino problem, Magnetic field, Beamline, High Energy Physics::Experiment, Neutrino, Particle Physics - Experiment
Abstract

The method developed for the calculation of the flux and composition of the West Area Neutrino Beam used by NOMAD in its search for neutrino oscillations is described. The calculation is based on particle production rates computed using a recent version of FLUKA and modified to take into account the cross sections measured by the SPY and NA20 experiments. These particles are propagated through the beam line taking into account the material and magnetic fields they traverse. The neutrinos produced through their decays are tracked to the NOMAD detector. The fluxes of the four neutrino flavours at NOMAD are predicted with an uncertainty of about 8% for nu(mu) and nu(e), 10% for antinu(mu), and 12% for antinu(e). The energy-dependent uncertainty achieved on the R(e, mu) prediction needed for a nu(mu)->nu(e) oscillation search ranges from 4% to 7%, whereas the overall normalization uncertainty on this ratio is 4.2%., 43 pages, 20 figures. Submitted to Nucl. Phys. B

Published
2003

23. A study of strange particle production in nu(mu) charged current interactions in the NOMAD experiment

Author

E. Pennacchio, N. Hyett, J.-M. Levy, Barry Blumenfeld, P. Astier, Alexander Toropin, L. S. Peak, Malcolm Ellis, Antonio Bueno, J.J. Gómez-Cadenas, A. Polyarush, H. Zaccone, J. Long, Didier Ferrere, M. E. Sevior, C. Joseph, Achim Geiser, Domizia Orestano, S.N. Tovey, Fr Pastore, Mikhail Kirsanov, R. Cousins, G. Bassompierre, Marco Laveder, J.-M. Vieira, T. Del Prete, M. Contalbrigo, L. La Rotonda, Sergei Gninenko, R. Challis, S.A. Bunyatov, T. Dignan, K. Schahmaneche, T. Vinogradova, S. Boyd, B. Lakić, P. Riemann, G. N. Taylor, J. A. Hernando, D. Kustov, Vyacheslav Valuev, Roberto Ferrari, F. Juget, Alexey Krasnoperov, A. Baldisseri, D. Geppert, E. Tsesmelis, Caren Hagner, M. Baldo-Ceolin, F. Vannucci, M. Banner, Bruce Yabsley, X. Méchain, P.W. Cattaneo, Ante Ljubičić, C. Conta, A. Lanza, E Silva E. Do Couto, L. Linssen, T. Schmidt, B. Schmidt, J. Kokkonen, A. Cervera-Villanueva, P. Zuccon, R. Petti, Stefano Lacaprara, D. Steele, A. Kovzelev, L. Camilleri, A.-M. Touchard, D. Pollmann, Fergus Wilson, André Rubbia, T. Weisse, T. Stolarczyk, A. Godley, V. Tereshchenko, E. Iacopini, G. Conforto, J.M. Gaillard, Vincenzo Cavasinni, M. Veltri, F.V. Weber, J. Dumarchez, M. T. Tran, Kevin Varvell, E. Gangler, M. Mezzetto, Kai Zuber, F. Salvatore, G. Collazuol, A. Grant, Mario Stipčević, J. Bouchez, H. Pessard, P. Nedelec, C. Gössling, A. Lupi, J.-P. Mendiburu, Valerio Vercesi, B. A. Popov, H. Degaudenzi, Alessandro Cardini, Dmitry V. Naumov, G. J. Feldman, G. F. Moorhead, C. Lachaud, F. Bobisut, Giacomo Graziani, U. Stiegler, J. Gosset, D. Gibin, V. Flaminio, F. J. P. Soler, O.L. Klimov, T. Fazio, D. Autiero, Yu. Nefedov, L. Vacavant, A. Placci, A. De Santo, S.R. Mishra, Chiara Roda, Caroline Poulsen, P. Hurst, L. Di Lella, M. Valdata-Nappi, D. Sillou, A. Guglielmi, J. Rico, A. Marchionni, Nathalie Besson, Marco Fraternali, I. Bird, G. Vidal-Sitjes, Valentin Kuznetsov, J-P. Meyer, L.J. Winton, J. Ulrichs, A. Letessier-Selvon, D. Daniels, Giacomo Polesello, M. Tareb-Reyes, Michel Gouanère, F. Martelli, and N. Kent

Subjects
Physics, Nuclear and High Energy Physics, Strange quark, Particle physics, 010308 nuclear & particles physics, Star (game theory), Hadron, Hyperon, Física, Lambda, 01 natural sciences, Nuclear physics, 0103 physical sciences, neutrino interactions, strange particle production, Production (computer science), High Energy Physics::Experiment, Neutrino, 010306 general physics, Nuclear Experiment, Charged current, Particle Physics - Experiment
Abstract

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 ($K^0_s, \Lambda, \bar{\Lambda}$) 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 $K^0_s$ and $\Lambda$ 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. A study of strange particle production in ν μ charged current interactions has been performed using the data from the NOMAD experiment. Yields of neutral strange particles ( K 0 s ,Λ, Λ ̄ ) have been measured. Mean multiplicities are reported as a function of the event kinematic variables E ν , 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 K 0 s and Λ in the final state have been analyzed. Clear signals corresponding to K ★± , Σ ★± , Ξ − and Σ 0 have been observed. A study of strange particle production in muon neutrino charged current interactions has been performed using the data from the NOMAD experiment. Yields of neutral strange particles K0s, Lambda, AntiLambda have been measured. Mean multiplicities are reported as a function of the event kinematic variables Enu, W2 and Q2 as well as of the variables describing particle behaviour within a hadronic jet: xF, z and pT2. Decays of resonances and heavy hyperons with identified K0s and Lambda in the final state have been analyzed. Clear signals corresponding to K*+-, Sigma*+-, Xi- and Sigma0 have been observed.

Published
2002

24. Study of D*+ production in nu_mu charged current interactions in the NOMAD experiment

Author

Mikhail Kirsanov, R. Cousins, J.-M. Vieira, Alexander Toropin, L. S. Peak, F. Juget, Domizia Orestano, M. Contalbrigo, Artem Chukanov, André Rubbia, P. Hurst, B. Schmidt, Antonio Bueno, T. Weisse, L. Di Lella, K. Benslama, Valentin Kuznetsov, O.L. Klimov, E. Iacopini, J.-P. Mendiburu, M. Valdata-Nappi, Vincenzo Cavasinni, J-P. Meyer, V. Flaminio, F. J. P. Soler, Vyacheslav Valuev, Didier Ferrere, Alessandro Cardini, T. Vinogradova, I. Bird, M. T. Tran, A. Godley, L.J. Winton, D. Geppert, F. Vannucci, P.W. Cattaneo, Ante Ljubičić, H. Degaudenzi, G. J. Feldman, M. Veltri, J. A. Hernando, K. Schahmaneche, Sergei Gninenko, J. Ulrichs, Kevin Varvell, A. Lanza, G. F. Moorhead, E. Gangler, D. Hubbard, P. Zuccon, E. do Couto e Silva, F. Salvatore, R. Petti, Stefano Lacaprara, Fergus Wilson, A. Placci, A.-M. Touchard, A. De Santo, L. La Rotonda, G. Sozzi, J. Rico, A. Marchionni, J. Long, A. Cervera-Villanueva, A. Grant, H. Pessard, R. Challis, C. Lachaud, A. Kovzelev, L. Camilleri, Caroline Poulsen, S.A. Bunyatov, P. Nedelec, P. Riemann, Giacomo Graziani, J. Bouchez, A. Lupi, Alexey Krasnoperov, Marco Fraternali, M. Baldo-Ceolin, G. Collazuol, M. Banner, V. Tereshchenko, A. Baldisseri, J. Dumarchez, D. Steele, A. Geiser, Mario Stipčević, S.R. Mishra, G. Vidal-Sitjes, A. Letessier-Selvon, Barry Blumenfeld, T. Dignan, F. Bobisut, D. Daniels, Th. Stolarczyk, Giacomo Polesello, Chiara Roda, E. Tsesmelis, Caren Hagner, H. Zaccone, M. Tareb-Reyes, T. Schmidt, Malcolm Ellis, B. A. Popov, C. Joseph, M. E. Sevior, J.J. Gómez-Cadenas, Michel Gouanère, J.M. Gaillard, M. Mezzetto, Kai Zuber, F. Martelli, Marco Laveder, N. Kent, Valerio Vercesi, Dmitry V. Naumov, Yu. Nefedov, L. Vacavant, E. Pennacchio, N. Hyett, Claus Gößling, D. Kustov, C. Conta, G. Conforto, G. Bassompierre, J. Kokkonen, S. Boyd, B. Lakić, G. N. Taylor, S.N. Tovey, Fr Pastore, Roberto Ferrari, C. Nguyen-Mau, T. Del Prete, Bruce Yabsley, X. Méchain, J.-M. Levy, P. Astier, D. Autiero, L. Linssen, D. Pollmann, F.V. Weber, T. Fazio, D. Sillou, A. Guglielmi, U. Stiegler, Nathalie Besson, J. Gosset, D. Gibin, and A. Polyarush

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, High Energy Physics::Phenomenology, Hadron, Física, Nuclear physics, Fragmentation function, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Neutrino, Nuclear Experiment, Particle Physics - Experiment, Astrophysics::Galaxy Astrophysics, Charged current
Abstract

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

25. Neutrino production of opposite sign dimuons in the NOMAD experiment

Author

Malcolm Ellis, J.J. Gómez-Cadenas, E. Manola-Poggioli, Alexey Krasnoperov, F. Salvatore, M. K. Vo, M. Baldo-Ceolin, K. Benslama, O.L. Klimov, T. Vinogradova, S. Tereshchenko, M. Mezzetto, E. do Couto e Silva, J. Long, Kai Zuber, J. Dumarchez, Vyacheslav Valuev, J. Bouchez, B. A. Popov, M. T. Tran, C. Nguyen-Mau, T. Del Prete, A. Lupi, J. M. Gaillard, D. Hubbard, P. Zuccon, K. Schahmaneche, D. Verkindt, Caroline Poulsen, R. Cousins, A. Marchionni, A. Godley, J.-M. Vieira, P. Astier, T. Dignan, P. Hurst, S.R. Mishra, E. Tsesmelis, Caren Hagner, L. Di Lella, M. Valdata-Nappi, I. Bird, T. Schmidt, F. Juget, M. Veltri, A. Kovzelev, Chiara Roda, A. Letessier-Selvon, Domizia Orestano, G. Collazuol, Mario Stipčević, M. E. Sevior, F. Bobisut, D. Daniels, Giacomo Polesello, A. Pluquet, M. Tareb-Reyes, Valentin Kuznetsov, M. Contalbrigo, J-P. Meyer, J.-P. Mendiburu, A. Placci, L. La Rotonda, Alessandro Cardini, Kevin Varvell, S.N. Tovey, L.J. Winton, M. Kirsanov, E. Pennacchio, N. Hyett, Fr Pastore, André Rubbia, A. Grant, H. Pessard, P. Nedelec, J. Ulrichs, E. Iacopini, A. De Santo, Vincenzo Cavasinni, G. Sozzi, Barry Blumenfeld, C. Conta, Claus Gößling, B. Schmidt, G. Conforto, Michel Gouanère, J. Kokkonen, F. Martelli, Nathalie Besson, J. A. Hernando, D. Steele, L. Mossuz, D. Sillou, R. Petti, A. Guglielmi, M. Steininger, Roberto Ferrari, J. M. Levy, A. Lanza, Stefano Lacaprara, Fergus Wilson, G. Bassompierre, S. Boyd, B. Lakić, G. N. Taylor, Giacomo Graziani, Yu. Nefedov, L. Vacavant, A. Cervera-Villanueva, Bruce Yabsley, X. Méchain, L. Camilleri, H. Degaudenzi, G. J. Feldman, G. F. Moorhead, D. Autiero, A. M. Touchard, V. Flaminio, F. J. P. Soler, A. Polyarush, Achim Geiser, T. Weisse, P. Rathouit, Marco Fraternali, L. Linssen, J. Gosset, Didier Ferrere, Sergei Gninenko, D. Pollmann, D. Gibin, T. Stolarczyk, F.V. Weber, F. Vannucci, M. Banner, Antonio Bueno, A. N. Toropin, U. Stiegler, T. Fazio, H. Zaccone, E. Gangler, D. Geppert, C. Joseph, P.W. Cattaneo, Ante Ljubičić, L.S. Peak, S.A. Bunyatov, A. Baldisseri, G. Ballocchi, Marco Laveder, Valerio Vercesi, 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
Physics, Nuclear and High Energy Physics, Particle physics, Muon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Branching fraction, Order (ring theory), Física, 01 natural sciences, Charm quark, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Production (computer science), Neutrino, 010306 general physics, Nucleon, Particle Physics - Experiment, Energy (signal processing)
Abstract

The NOMAD Collaboration presents a study of opposite sign dimuon events in the framework of Leading Order QCD. A total of 2714 neutrino- and 115 antineutrino-induced opposite sign dimuon events with $E_{\mu 1}, E_{\mu 2} > 4.5$ GeV, $15 < E_{\nu} < 300$ GeV and $Q^{2} > 1\;(\mbox{GeV}/\mbox{c})^{2}$ are observed %in the data from the 1995 and 1996 runs. in the Front-Calorimeter of NOMAD during the 1995 and 1996 runs. The analysis yields a value for the charm quark mass of $m_{c} = 1.3^{+0.3\;+0.3}_{-0.3\;-0.3}\;\mbox{GeV}/\m box{c}^{2}$ and for the average semileptonic branching ratio of $B_{c} = 0.095^{+0.007\;+0.014}_{-0.007\;-0.013}$. The ratio of the strange to non-strange sea in the nucleon is measured to be $\kappa = 0.48^{+0.09 +0.17}_{-0.07 -0.12}$. The measured rate of charm-induced dimuon relative to single muon, as a function of neutrino energy, is consistent with the slow rescaling hypothesis of heavy quark production.

Published
2000

26. The trigger system of the NOMAD experiment

Author

Bruce Yabsley, Alessandro Cardini, André Rubbia, N. Hyett, N. Koch, B. Schmidt, S. Boyd, D. Geppert, J. Long, Caroline Poulsen, Claus Gößling, D. Steele, J. Altegoer, A. Voullieme, D. Pollmann, G. F. Moorhead, F. J. P. Soler, W. Huta, T. Weiße, Kevin Varvell, P. Farthouat, A. Lanza, L.J. Winton, J. Andrle, and Roberto Ferrari

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, business.industry, Scintillator, Signal, Particle detector, Nuclear physics, Logic gate, Scintillation counter, Detectors and Experimental Techniques, business, Instrumentation, AND gate, Computer hardware, VMEbus, Electronic circuit
Abstract

The NOMAD trigger system is described in the present paper. It is made up of a large area plastic scintillator veto system, two trigger scintillator planes inside a 0.4 T magnetic field and their associated trigger electronics. Special features of the system consist of the use of proximity mesh photomultipliers which allow the trigger scintillators to operate in the magnetic field, and the use of custom-built VME modules which perform the trigger logic decisions, the signal synchronisation and gate generation, event counting and livetime calculations. This paper also includes a description of each of the NOMAD triggers, with their calculated and measured rates, efficiencies and livetimes.

Published
1998

27. Search for a new gauge boson in $\pi^{0}$ decays

Author

J. Altegoer, P. Astier, D. Autiero, A. Baldisseri, M. Baldo-Ceolin, G. Ballocchi, M. Banner, S. Basa, G. Bassompierre, K. Benslama, N. Besson, I. Bird, B. Blumenfeld, F. Bobisut, J. Bouchez, S. Boyd, A. Bueno, S. Bunyatov, L. Camilleri, A. Cardini, A. Castera, P.W. Cattaneo, V. Cavasinni, A. Cervera-Villanueva, G.M. Collazuol, G. Conforto, C. Conta, M. Contalbrigo, R. Cousins, D. Daniels, A.De Santo, T.Del Prete, T. Dignan, L.Di Lella, E. do Couto e Silva, I.J. Donnelly, J. Dumarchez, T. Fazio, G.J. Feldman, R. Ferrari, D. Ferrère, V. Flaminio, M. Fraternali, J-M. Gaillard, P. Galumian, E. Gangler, A. Geiser, D. Geppert, D. Gibin, S.N. Gninenko, J-J. Gomez-Cadenas, J. Gosset, C. Gößling, M. Gouanère, A. Grant, G. Graziani, A. Guglielmi, C. Hagner, J. Hernando, D. Hubbard, P. Hurst, N. Hyett, E. Iacopini, C. Joseph, D. Kekez, B. Khomenko, M.M. Kirsanov, O. Klimov, J. Kokkonen, A.V. Kovzelev, V. Kuznetsov, S. Lacaprara, A. Lanza, L. La Rotonda, M. Laveder, A. Letessier-Selvon, J-M. Levy, L. Linssen, A. Ljubičić, J. Long, A. Lupi, E. Manola-Poggioli, A. Marchionni, F. Martelli, X. Méchain, J-P. Mendiburu, J-P. Meyer, M. Mezzetto, S.R. Mishra, G.F. Moorhead, L. Mossuz, P. Nédélec, Yu. Nefedov, C. Nguyen-Mau, D. Orestano, F. Pastore, L.S. Peak, E. Pennacchio, J-P. Perroud, H. Pessard, R. Petti, A. Placci, H. Plothow-Besch, A. Pluquet, G. Polesello, D. Pollmann, B.G. Pope, B. Popov, C. Poulsen, P. Rathouit, C. Roda, A. Rubbia, F. Salvatore, D. Scannicchio, K. Schahmaneche, B. Schmidt, A. Sconza, M. Serrano, M.E. Sevior, D. Sillou, F.J.P. Soler, G. Sozzi, D. Steele, P. Steffen, M. Steininger, U. Stiegler, M. Stipčević, T. Stolarczyk, M. Tareb-Reyes, G.N. Taylor, S. Tereshchenko, A.N. Toropin, A-M. Touchard, S.N. Tovey, M-T. Tran, E. Tsesmelis, J. Ulrichs, V. Uros, M. Valdata-Nappi, V. Valuev, F. Vannucci, K.E. Varvell, M. Veltri, V. Vercesi, D. Verkindt, J-M. Vieira, T. Vinogradova, M-K. Vo, S.A. Volkov, F. Weber, T. Weisse, M. Werlen, F. Wilson, L.J. Winton, B.D. Yabsley, H. Zaccone, and K. Zuber

Subjects
Physics, Nuclear and High Energy Physics, Gauge boson, Particle physics, Large Hadron Collider, Branching fraction, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Phenomenology, Física, High Energy Physics - Experiment, Pion, Coulomb, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, Primakoff effect, Energy (signal processing), Particle Physics - Experiment
Abstract

A search was made for a new light gauge boson $X$ which might be produced in $\pi^{0}\to\gamma + X$ decay from neutral pions generated by 450-GeV protons in the CERN SPS neutrino target. The X's would penetrate the downstream shielding and be observed in the NOMAD detector via the Primakoff effect, in the process of $X \to\pi^{0}$ conversion in the external Coulomb field of a nucleus. With $1.45\times10^{18}$ protons on target, 20 candidate events with energy between 8 and 140 GeV were found from the analysis of neutrino data. This number is in agreement with the expectation of 18.1$\pm$2.8 background events from standard neutrino processes. A new 90% C.L. upper limit on the branching ratio $Br(\pi^{0}\to\gamma + X)< (3.3 to 1.9) \times10^{-5}$ for $X$ masses ranging from 0 to 120 MeV/c^2 is obtained., Comment: 15 pages, LaTex, 6 eps figures included, submitted to Physics Letters B

Published
1998

28. Search for heavy neutrinos mixing with tau neutrinos

Author

P. Astier, D. Autiero, A. Baldisseri, M. Baldo-Ceolin, M. Banner, G. Bassompierre, K. Benslama, N. Besson, I. Bird, B. Blumenfeld, F. Bobisut, J. Bouchez, S. Boyd, A. Bueno, S. Bunyatov, L. Camilleri, A. Cardini, P.W. Cattaneo, V. Cavasinni, A. Cervera-Villanueva, G. Collazuol, G. Conforto, C. Conta, M. Contalbrigo, R. Cousins, D. Daniels, H. Degaudenzi, T. Del Prete, A. De Santo, T. Dignan, L. Di Lella, E. do Couto e Silva, I.J. Donnelly, J. Dumarchez, M. Ellis, T. Fazio, G.J. Feldman, R. Ferrari, D. Ferrère, V. Flaminio, M. Fraternali, J.-M. Gaillard, E. Gangler, A. Geiser, D. Geppert, D. Gibin, S.N. Gninenko, A. Godley, M.C. Gonzalez-Garcia, J.-J. Gomez-Cadenas, J. Gosset, C. Gößling, M. Gouanère, A. Grant, G. Graziani, A. Guglielmi, C. Hagner, J. Hernando, D. Hubbard, P. Hurst, N. Hyett, E. Iacopini, C. Joseph, F. Juget, M.M. Kirsanov, O. Klimov, J. Kokkonen, A.V. Kovzelev, N.V. Krasnikov, A. Krasnoperov, S. Lacaprara, C. Lachaud, B. Lakić, A. Lanza, L. La Rotonda, M. Laveder, A. Letessier-Selvon, J.-M. Levy, L. Linssen, A. Ljubičić, J. Long, A. Lupi, A. Marchionni, F. Martelli, X. Méchain, J.-P. Mendiburu, J.-P. Meyer, M. Mezzetto, S.R. Mishra, G.F. Moorhead, D. Naumov, P. Nédélec, Yu. Nefedov, C. Nguyen-Mau, D. Orestano, F. Pastore, L.S. Peak, E. Pennacchio, H. Pessard, R. Petti, A. Placci, G. Polesello, D. Pollmann, A. Polyarush, B. Popov, C. Poulsen, P. Rathouit, J. Rico, C. Roda, A. Rubbia, F. Salvatore, K. Schahmaneche, B. Schmidt, G. Segneri, M. Sevior, F.J.P. Soler, G. Sozzi, D. Steele, U. Stiegler, M. Stipčević, Th. Stolarczyk, M. Tareb-Reyes, G.N. Taylor, V. Tereshchenko, A.N. Toropin, A.-M. Touchard, S.N. Tovey, M.-T. Tran, E. Tsesmelis, J. Ulrichs, L. Vacavant, M. Valdata-Nappi, V. Valuev, F. Vannucci, K.E. Varvell, M. Veltri, V. Vercesi, G. Vidal-Sitjes, J.-M. Vieira, T. Vinogradova, F.V. Weber, T. Weisse, F.F. Wilson, L.J. Winton, B.D. Yabsley, H. Zaccone, K. Zuber, P. Zuccon, 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
Nuclear and High Energy Physics, Particle physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Proton, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Big Bang nucleosynthesis, Tau neutrino, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 010306 general physics, Mixing (physics), Physics, Range (particle radiation), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Física, 3. Good health, neutrino mixing, neutrino decay, High Energy Physics::Experiment, Neutrino, Anomaly (physics), Event (particle physics), Particle Physics - Experiment
Abstract

We report on a search for heavy neutrinos ($\nus$) produced in the decay $D_s\to \tau \nus$ at the SPS proton target followed by the decay $\nudecay$ in the NOMAD detector. Both decays are expected to occur if $\nus$ is a component of $\nu_{\tau}$.\ From the analysis of the data collected during the 1996-1998 runs with $4.1\times10^{19}$ 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 $\nus$ mass range from 10 to 190 $\rm MeV$. 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.\, Comment: 20 pages, 7 figures, a few comments added

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