| Title: | A measurement of coherent neutral pion production in neutrino neutral current interactions in the NOMAD experiment |
Authors: | Kullenberg, C. T.
Mishra, S. R.
Seaton, M. B.
Kim, J. J.
Tian, X. C.
Scott, A. M.
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, P. W.
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.
do Couto e Silva, E.
Dumarchez, J.
Ellis, M.
Feldman, G. J.
Ferrari, R.
Ferrere, D.
Flaminio, V.
Fraternali, M.
Gaillard, J. -M.
Gangler, E.
Geiser, A.
Geppert, D.
Gibin, D.
Gninenko, S.
Godley, A.
Gomez-Cadenas, J. -J.
Gosset, J.
Goessling, 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, J. -M.
Ling, J.
Linssen, L.
Ljubicic, A.
Long, J.
Lupi, A.
Lyubushkin, V.
Marchionni, A.
Martelli, F.
Mechain, X.
Mendiburu, J. -P
Meyer, J. -P.
Mezzetto, M.
Moorhead, G. F.
Naumov, D.
Nedelec, P.
Nefedov, Yu.
Nguyen-Mau, C.
Orestano, Domizia
Pastore, Fernanda
Peak, L. S.
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, F. J. P.
Sozzi, G.
Steele, D.
Stiegler, U.
Stipcevic, M.
Stolarczyk, Th.
Tareb-Reyes, M.
Taylor, G. N.
Tereshchenko, V.
Toropin, A.
Touchard, A. -M.
Tovey, S. N.
Tran, M. -T.
Tsesmelis, E.
Ulrichs, J.
Vacavant, L.
Valdata-Nappi, M.
Valuev, V.
Vannucci, F.
Varvell, K. E.
Veltri, M.
Vercesi, V.
Vidal-Sitjes, G.
Vieira, J. M.
Vinogradova, T.
Weber, F. V.
Weisse, T.
Wilson, F. F.
Winton, L. J.
Wu, Q.
Yabsley, B. D.
Zaccone, H.
Zuber, K.
Zuccon, P. |
Keywords: | 450 GEV/C PROTONS
PI-0 PRODUCTION
CROSS-SECTION
MUON-NEUTRINO
BERYLLIUM
NUCLEI |
Issue Date: | 30-Nov-2009 |
Publisher: | Elsevier Science BV |
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 x 10(6) muon-neutrino Charged Current interactions in the energy range 2.5 <=E-nu <= 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, nu + A -> nu + 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 4630 +/- 522(stat) +/-426(syst) corrected coherent-pi(0) events with E-pi 0 >= 0.5 GeV. We measure sigma(nu A -> nu A pi(0)) = 172.6 +/- 8.1 (stat) +/- 6.9(syst)]x 10(-40) cm(2)/nucleus. This is the most precise measurement of the coherent pi(0) production to date. (C) 2009 Elsevier B.V. All rights reserved. |
URI: | http://hdl.handle.net/2307/379 |
ISSN: | 0370-2693 |
DOI: | 10.1016/j.physletb.2009.10.083 |
| Appears in Collections: | A - Articolo su rivista
X_Dipartimento di Fisica 'Edoardo Amaldi'
|
